
Full
Name:
Prof. Christopher Rhys Bowen
Department:
Mechanical Engineering
Telephone:
+44 1225 383660
Fax:
+44 1225 386098
E-mail Address:
C.R.Bowen@bath.ac.uk

Postal
Address:
Materials Research Centre
Department of Mechanical Engineering
University of Bath
Bath
BA2 7AY
United Kingdom

Research interests:
·
Sensor and actuator
materials
·
Multifunctional ceramics
and composites
·
Structural and functional
ceramics
·
Nanoporous and
nanostructured materials
·
Dielectric properties of
materials
·
Embedded actuators and
sensors
·
GaN based sensors (MORGaN FP7 project)
·
Conductive ceramic
sensors (MesMesh FP7 project)
·
Networks
Researcher ID: B-3087-2008 Google Scholar: Link
Book(s)
1. Electromechanical
Properties in Composites Based on Ferroelectrics, Vitaly Yu Topolov and Christopher R. Bowen, 2009, XVI,
202 p. 48 illus., Hardcover ISBN: 978-1-84800-999-8
2. Progress
in porous piezoceramics (Chapter 7), R Ramesh, H Kara, R Stevens and CR Bowen -
Developments in Ceramic Materials Research, 2008 Published by Nova Publishers, 2008 ISBN 1600217702,
9781600217708
3. Piezoceramic
Materials and Devices (Chapter 2) HIGH
PERFORMANCE OF ADVANCED COMPOSITES BASED ON RELAXOR-FERROELECTRIC SINGLE CRYSTALS, pp.71-112 (V.
Yu. Topolov, C. R. Bowen, S. V. Glushanin): Nova publishers, 2010. ISBN:
978-1-60876-459-4
Journal Publications (contact me if you want a paper):
- D.N. Betts David, H.A. Kim H.,
C.R. Bowen, Modeling and optimization of bistable composite laminates for
piezoelectric actuation, Journal of Intelligent Material Systems
and Structures, 22(18) 2181-2191 (2011) http://dx.doi.org/10.1177/1045389X11427478 pdf file
- A.H.D. Graham, C.R.Bowen, S.M
Surguy, New prototype assembly methods for biosensor integrated circuits, Medical
Engineering & Physics 33(8) 973-979 2011 973-979 http://dx.doi.org/10.1016/j.medengphy.2011.03.006.
pdf
file
- D. Regonini D, A.C.E. Dent,
C.R. Bowen et al., Impedance spectroscopy analysis of Ti(n)O(2n-1) Magneli
phases, Materials Letters, 65(23-24) 3590-3592 (2011) http://dx.doi.org/10.1016/j.matlet.2011.07.094
pdf file
- C.R, Bowen, P.F. Giddings,
A.I.T.Salo, H.A.Kim, Modeling and Characterization of Piezoelectrically
Actuated Bistable Composites, IEEE Trans. Ultrasonics, Ferroelectrics
and Frequency Control 58(9) 1737-1750 (2011) http://dx.doi.org/10.1109/TUFFC.2011.2011 pdf file
- R.W.C.Lewis, A.C.E.Dent, R.Stevens,
C.R.Bowen, Microstructural modelling of the polarization and properties of
porous ferroelectrics, Smart Materials and Strucutres, 20(8) 085002 (2011)
http://dx.doi.org/10.1088/0964-1726/20/8/085002
pdf file
- V.Yu Topolov, C.R. Bowen,
P.Bisegna, Electromechanical Coupling Factors of Novel 0-3-0 Composites
Based on PMN-xPT Single Crystals, Ferroelectrics, 422 40-43 (2011) DOI:
10.1080/00150193.2011.594719 http://dx.doi.org/10.1080/00150193.2011.594719
- M. Gerard M, C.R. Bowen, F.
Osman, Processing and Properties of PTFE-FEP-PTFE Ferroelectret Films,
Ferroelectrics, 42 59-64 (2011) http://dx.doi.org/10.1080/00150193.2011.594694
- D.T. Branson, F.C. Wang, D.N.
Johnston, P.Keogh, C.R.Bowen et al., Piezoelectrically actuated hydraulic valve
design for high bandwidth and flow performance, Proc. IMechE Part I –
Journal of Systems and Control Engineering, 225(13) 345-359 (2011) http://dx.doi.org/10.1177/09596518JSCE1037
pdf file
- V.Y. Topolov, C.R. Bowen, Inconsistencies of the
complete sets of electromechanical constants of relaxor-ferroelectric
single crystals, Journal of Applied Physics,
109(9) 094107 (2011) http://dx.doi.org/10.1063/1.3581117 pdf file
- A.H.D. Graham, J. Robbins, C.R.
Bowen et al., Commercialisation of CMOS Integrated Circuit Technology in
Multi-Electrode Arrays for Neuroscience and Cell-Based Biosensors, Sensors
11(5) 4943-4971 (2011) http://dx.doi.org/10.3390/s110504943
pdf
file
- P.F. Giddings, H.A. Kim, A.I.T
Salo, C.R.Bowen, Modelling of piezoelectrically actuated bistable
composites, Materials Letters, 65(9) 1261-1263 (2011) DOI:
10.1016/j.matlet.2011.01.015
http://dx.doi.org/10.1016/j.matlet.2011.01.015 pdf file
- M.J. Edwards, C.R. Bowen, D.W.E
Allsopp et al., Modelling wafer bow in silicon-polycrystalline CVD diamond
substrates for GaN-based devices, J. Phys. D – App. Phys.
43(38) 385502 (2011) http://dx.doi.org/10.1088/0022-3727/43/38/385502 pdf file
- F. Clemens, T, Comyn, J.
Heiber, C.R.Bowen et al., . Processing and electromechanical properties of
lanthanum-doped Pb(Zr,Ti)O(3) extruded piezoelectric fibres, Journal
of Materials Science, 46(13), 4517-4523 (2011) http://dx.doi.org/10.1007/s10853-011-5345-7 pdf file
- D.T. Branson, D.N. Johnston,
D.G. Tilley, C.R.Bowen, P.Keogh, Piezoelectric Actuation in a High
Bandwidth Valve, Ferroelectrics 408, 32-40
(2010) DOI: 10.1080/00150193.2010.484994
- T.H.Panzera, P.H.R. Borges,
J.C.Rbio, C.R.Bowen et al., The dielectric response of compacted
cementitious composites, Advances in Cement Research,
22(3) 127-134 (2010) http://dx.doi.org/10.1680/adcr.2010.22.3.127
- A.H.D.Graham, C.R.Bowen, J.Robbins
and J.T.Taylor, Nanostructured electrodes for biocompatible CMOS
integrated circuits, Sensors and Actuators B- Chemical
147(2) 697-706 (2010) http://dx.doi.org/10.1016/j.snb.2010.03.030 pdf file
- V.Yu Topolov, A.V. Krivoruchko,
C.R.Bowen et al., Hydrostatic Piezoelectric Coefficients of the 2-2
Composite Based on [011]-poled 0.71Pb(Mg(1/3)Nb(2/3))O(3)-0.29PbTiO(3)
Single Crystal, Ferroelectrics, 400,
410-416 (2010) DOI:
10.1080/00150193.2010.505888
- H.A. Kim HA, D.N.Betts,
A.I.T.Salo and C.R.Bowen,
Shape memory alloy-piezoelectric active structures for reversible
actuation of bistable composites, AIAA Journal 48(6) 1265-1268 (2010) http://dx.doi.org/10.2514/1.J050100 pdf file
- C.W.Liu, P.A.Shields, .Q.Chen,
et al. Variations in mechanisms of selective area growth of GaN on
nano-patterned substrates by MOVPE, Phys. Stat. Solidi. C, 7 (1)
32-35 (2010) http://dx.doi.org/10.1002/pssc.200982618
pdf file
- F.R. Baxter, C.R. Bowen CR, I.G.
Turner IG, Electrically active bioceramics: A review of interfacial
responses, Annal. Biomed. Eng. 36(6) 2079-2092, 2010 http://dx.doi.org/10.1002/pssc.200982618 pdf file
- P. F.Giddings, C.R. Bowen CR,
A.I.T. Salo and H.A.Kim, Bistable composite laminates: Effects of laminate
composition on cured shape and response to thermal load, Composite
Structures, 92(9) 2220-2225 (2010) http://dx.doi.org/10.1016/j.compstruct.2009.08.043
pdf
file
- S.Y. Hao, J.T. Taylor, C.R. Bowen,
S. Gheduzzi, A.W. Miles, Sensing methodology for in vivo stability
evaluation of total hip and knee arthroplasty, Sensors and Actuators A
– Physical, 157(1) 150-160 (2010) http://dx.doi.org/10.1016/j.sna.2009.10.016 pdf file
- D.Kumar, J.P.Gittings,
I.G.Turner, C.R.Bowen, A.
Bastida-Hidalgo, S.H.Cartmell, Polarization of hydroxyapatite: Influence
on osteoblast cell proliferation, Acta Biomaterialia, 6(4)
1549-1554 (2010) http://dx.doi.org/10.1016/j.actbio.2009.11.008 pdf file
- D. Regonini, A. Jaroenworaluck,
R. Stevens, C.R.Bowen, Effect
of heat treatment on the properties and structure of TiO2
nanotubes: phase composition and chemical composition, Surface
and Interface Analysis, 42 (3), 139-144 (2010) http://dx.doi.org/10.1002/sia.3183 pdf file
- M.E. Nasir, D.W.E. Allsopp,
C.R. Bowen et al., The fabrication of mono-domain highly ordered
nanoporous alumina on a wafer scale by a guided electric field, Nanotechnology,
21(10) 105303 (2010) http://dx.doi.org/10.1088/0957-4484/21/10/105303
pdf file
- D.N. Betts, A.I.T.Salo, C.R.
Bowen and H.A.Kim, Characterisation and modelling of the cured shapes of
arbitrary layup bistable composite laminates, Composite Structures,
92(7) 1694-1700 (2010) http://dx.doi.org/10.1016/j.compstruct.2009.12.005 pdf file
- A.Jaroenworaluck, D. Regonini,
C.R.Bowen, R. Stevens, A microscopy study of the effect of heat treatment
on the structure and properties of anodised TiO2 nanotubes, Applied
Surface Science, 256(9), 2672-2679 (2010) http://dx.doi.org/10.1016/j.apsusc.2009.09.078
pdf
file
- J.P. Gittings, C.R.Bowen.
A.C.E.Dent, I.G.Turner, F.R.Baxter, S.Cartmell and J.Chaudhuri, Influence
of Porosity on Polarisation and Electrical Properties of Hydroxyapatite
Based Ceramics, Ferroelectrics, 390, 168-176
(2009) pdf file http://dx.doi.org/10.1080/00150190903001011
- V.Y. Topolov, C.R.Bowen and S.V.
Glushanin, A.E. Panich. Electromechanical Coupling in the Novel 2-2
Parallel-Connected PMN-0.33PT Single-Domain Crystal/Polymer Composite, Ferroelectrics,
393, 27-37 (2009) http://dx.doi.org/10.1080/00150190903412689
- R.W.C. Lewis, C.R.Bowen,
A.C.E.Dent, K.Jonas, Finite Element and Experimental Analysis of the
Vibration Response of Radially Poled Piezoceramic Cylinders, Ferroelectrics,
389, 95-106 (2009) pdf file http://dx.doi.org/10.1080/00150190902988176
- A.H.D. Graham, C.R.Bowen,
J.Taylor, J.Robbins, Neuronal cell biocompatibility and adhesion to
modified CMOS electrodes, Biomedical Microdevices, 11,
1091-1101 (2009) pdf file
- D. Regonini, A. Satka A, D.W.E.
Allsopp, A. Jaroenworaluck, R. Stevens, C.R.Bowen, Anodised titania
nanotubes prepared in a glycerol/NaF electrolyte, Journal of Nanoscience and
Nanotechnology, 9, 4410-4416 (2009) http://dx.doi.org/10.1166/jnn.2009.M69
pdf file
- P.Richardson, D.P.Almond and C.R.Bowen,
A Study of Random Capacitor Networks to Assess the Emergent Properties of
Dielectric Composites, Ferroelectrics, 391,158-167
(2009) http://dx.doi.org/10.1080/00150190903004767
- Vitaly Y. Topolov, S.V.
Glushanin, C.R. Bowen, A.E. Panich, "Remarkable Electromechanical
Coupling in the 2-2 Composite Based on Single-domain PMN-0.33PT Crystal”, Sensors & Transducers
Journal (ISSN 1726-5479), Vol.109, Issue 10, October 2009, pp.108-116 pdf
file
- F.R. Baxter, I.G. Turner, C.R.
Bowen, J.P. Gittings, J.B. Chaudhuri, An in vitro study of electrically
active hydroxyapatite-barium titanate ceramics using Saos-2 cells, Journal
of Materials Science – Materials in Medicine, 20, 1697-1708
(2009) pdf file http://dx.doi.org/10.1007/s10856-009-3734-0
- G. Hubbard, S.J. Abbott, Q.
Chen Q, D.W.E. Allsopp, W.N. Wang, C.R. Bowen CR, R. Stevens et al.,
Wafer-scale transfer of nanoimprinted patterns into silicon substrates, Physica
E- Low Dimensional Systems & Nanostructures, 41,
1118-1121(2009) pdf file http://dx.doi.org/10.1016/j.physe.2008.08.014
- T.H. Panzera, P.H.R. Borges,
J.C., C.R.Bowen, W.L.
Vasconcelos, Physical properties of cement composites designed for
aerostatic bearings, Materials and Structures,
42(5), 605-615 (2009) pdf file http://dx.doi.org/10.1617/s11527-008-9407-5
- A.Macchetta , I.G. Turner, I.G.
and C.R. Bowen, Fabrication of HA/TCP scaffolds with a graded and porous
structure using a camphene-based freeze-casting method, Acta
Biomaterialia, 5, 1319-1327 (2009) pdf file http://dx.doi.org/10.1016/j.actbio.2008.11.009
- A.H.D. Graham, C.R. Bowen, J.
Robbins, J. Taylor, Formation of a porous alumina electrode as a low-cost
CMOS neuronal interface, Sensors and Actuators B: Chemical,
138, 296-303 (2009) pdf
file http://dx.doi.org/10.1016/j.snb.2009.01.050
- J.P. Gittings, C.R. Bowen CR,
A.C.E. Dent et al., Electrical characterization of hydroxyapatite-based
bioceramics, Acta Biomaterialia, 5, 743-754 (2009) pdf file
http://dx.doi.org/10.1016/j.actbio.2008.08.012
- K. Ramam, A.J. Bell, C.R. Bowen,
K. Chandramouli, Investigation of dielectric and piezoelectric properties
of niobium-modified PLSZFT nanoceramics for sensor and actuator
applications, Journal of Alloys and Compounds 473, 330-335 (2009) pdf file http://dx.doi.org/10.1016/j.jallcom.2008.05.092
- V.Y.Topolov, A.V. Krivoruchko,
P.Bisegna and C.R.Bowen, Orientation effects in 1-3 composites based on
0.93Pb(Zn1/3Nb2/3)O3-0.07PbTiO3 single crystals, Ferroelectrics, 376, 336-348 (2008) http://dx.doi.org/10.1080/00150190802440997
- A.C.E.Dent, C.R.Bowen,
R.Stevens. M.G.Cain and M.Stewart, Tensile strength of active fibre
composites - Prediction and measurement, Ferroelectrics,
368 447-453 (2008) pdf file http://dx.doi.org/10.1080/00150190802368529
- C.R.Bowen, A.C.E. Dent and
T.Comyn, Modelling Power Law Dependencies of Frequency Dependent AC
Conductivity and Permittivity of Conductor-Relaxor Composites. Ferroelectrics,
370, 166 (2008) pdf
file http://dx.doi.org/10.1080/00150190802381522
- C. R. Bowen, L. R. Bradley, D.
P. Almond, P.D. Wilcox, Flexible piezoelectric transducer for ultrasonic
inspection of non-planar components, Ultrasonics, 48, 367-375 (2008)
pdf file http://dx.doi.org/10.1016/j.ultras.2008.01.006
- A. Jaroenworaluck, D. Regonini,
C.R. Bowen et al. Nucleation
and early growth of anodized TiO2 film, Journal of Materials
Research, 23, 2116-2124
(2008) pdf file http://dx.doi.org/10.1557/JMR.2008.0276
- J.K. Kar, R.Stevens
and C.R.Bowen, Processing and characterisation of various mixed oxide and
perovskite-based pigments for high temperature ceramic colouring
application, Journal of Alloys and Compounds, 461, 77-84 (2008) pdf file http://dx.doi.org/10.1016/j.jallcom.2007.07.044
- J.K. Kar, R.Stevens
and C.R.Bowen, Rare-earth cuprates for ceramic colouring
application—An investigation, Journal of Alloys and Compounds, 455, 121-129 (2008) pdf file http://dx.doi.org/10.1016/j.jallcom.2007.01.124
- P.Giddings, C.R.Bowen, H.Kim
and R.Butler, Characterisation of actuation properties of piezoelectric
bi-stable carbon-fibre laminates, Composites Part A, 39 697-703
(2008) pdf
file http://dx.doi.org/10.1016/j.compositesa.2007.07.007
- V Yu Topolov and C.R.Bowen,
Characteristics of 1-3-type ferroelectric ceramic / auxetic polymer
composites, Modelling Simul. Mater. Sci. Eng. 16 015007 (2008) pdf file http://doi:10.1088/0965-0393/16/1/015007
- T. H. Panzera, J. C. Rubio, C.
R. Bowen, W. L. Vasconcelos,
K. Strecker, Correlation between structure and pulse velocity of
cementitious composites, Advances
in Cement Research 20, 101-108 (2008) http://dx.doi.org/10.1680/adcr.2008.20.3.101
- R. Gabbrielli, I. G. Turner and
C. R. Bowen, Development of Modelling Methods for Materials to be Used as
Bone Substitutes, Key Eng. Mat. 361-363, 903-906 (2008) pdf file
- F.R. Baxter, I.G. Turner, C.R.
Bowen, J. P. Gittings, J.B. Chaudhuri and R.W.C. Lewis, The Structure and Properties
of Electroceramics for Bone Graft Substitution, Key Eng. Mat.
361-363, 99-102, (2008) pdf
file
- T.H. Panzera, J.C. Rubio, C.R.
Bowen, and P.J. Walker, Microstructural design of materials for aerostatic
bearings, Cement and Concrete Composites, 30, 649-660 (2008) http://dx.doi.org/10.1016/j.cemconcomp.2007.08.013 pdf file
- L.R. Bradley, C.R. Bowen, B.
McEnaney and D.C. Johnson, Shear properties of a carbon/carbon composite
with non-woven felt and continuous fibre reinforcement layers, Carbon
45 2178–2187 (2007) pdf file
http://dx.doi.org/10.1016/j.carbon.2007.06.072
- R. W. C. Lewis, A. C. Dent and
C. R. Bowen, Network Modelling of 3-3 Piezocomposite Materials, Ferroelectrics,
351, 216–224 (2007) pdf
file http://dx.doi.org/10.1080/00150190701354307
- V.
Yu. Topolov,, A.V. Krivoruchko and C.R. Bowen, Maxima
of Effective Parameters of Novel Piezo-Composites Based on
Relaxor-Ferroelectric Single Crystals, Ferroelectrics, 351,
145-152 (2007) http://dx.doi.org/10.1080/00150190701354141
- A.Jaroenworaluck,
D. Regonini , C. R. Bowen, R. Stevens and D. Allsopp, Macro, micro and
nanostructure of TiO2 anodised films prepared in a
fluorine-containing electrolyte, Journal of Materials Science, 42(16)
6729-6734 (2007) pdf
file http://dx.doi.org/10.1007/s10853-006-1474-9
- S.A.Wilson,
, R.P. Jourdain, Q. Zhang, , R.A.Dorey, C.R. Bowen et al., New materials
for micro-scale sensors and actuators. An engineering review,
Materials Science and Engineering R: Reports 56(1-6) 1-129 (2007) email
for copy [C.R.Bowen@bath.ac.uk]
http://dx.doi.org/10.1016/j.mser.2007.03.001
- J.K. Kar, R. Stevens and C.R.
Bowen, Effect of cerium oxide on colour hue of praseodymium-zircon yellow pigment,
Advances
in Applied Ceramics, 106 (4), 175-179 (2007) http://dx.doi.org/10.1179/174367607X169111
- D.
Regonini, C.R. Bowen, R. Stevens, D. Allsopp, D., A. Jaroenworaluck, Anodised TiO2 nano-tubes:
Voltage ramp influence on the nano-structured oxide and investigation of
phase changes promoted by thermal treatments, Physica Status Solidi
(A), 204 (6) 1814-1819.0 (2007) pdf file
http://dx.doi.org/10.1002/pssa.200675326
- J.P.Gittings,
C.R. Bowen, I.G.Turner, F.Baxter, J. Chaudhuri, Characterisation of
ferroelectric-calcium phosphate composites and ceramics, Journal of
the European Ceramic Society, 27 (13-15) 4187-4190 (2007) pdf
file http://dx.doi.org/10.1016/j.jeurceramsoc.2007.02.120
- A.C.Dent,
C.R.Bowen, R.Stevens, M.G.Cain, M. Stewart, Effective elastic properties for
unpoled barium titanate, Journal of the European Ceramic Society,
27 (13-15) 3739-3743 (2007) pdf file http://dx.doi.org/10.1016/j.jeurceramsoc.2007.02.031
- C.R.Bowen and V.Yu Topolov, Piezoelectric
activity and sensitivity of novel composites based on barium
titanate-hydroxyapatite composite ceramics, Key Eng. Mat.,
Vol. 334-335 (2007) 1113-1116 pdf file
- C.R.Bowen, A.I.T.Salo, R.Butler, E.Chang and
H.A.Kim, Bi-stable composites with piezoelectric actuators for shape
change, Key Eng. Mat.,Vol. 334-335 (2007) 1109-1112 pdf file
- C. R.
Bowen, R. Butler, R. Jervis, H. A. Kim, and A. I. T. Salo, Morphing and
Shape Control using Unsymmetrical Composites, Journal of Intelligent
Material Systems and Structures 18 89-98 (2007) pdf file http://dx.doi.org/10.1177/1045389X07064459
- C R
Bowen, A C Dent, L J Nelson, R Stevens, M G Cain, and M Stewart, Failure
and volume fraction dependent mechanical properties of composite sensors
and actuators. Proc. IMechE Vol. Part C: J. Mechanical Engineering
Science, 220(C11), 1655-1664 (2006) pdf file http://dx.doi.org/10.1243/09544062JMES255
- C.R.Bowen,
L.J. Nelson, L.J., R.Stevens, M.G. Cain, M. Stewart, M., Optimisation of
interdigitated electrodes for piezoelectric actuators and active fibre
composites, Journal of Electroceramics, 16(4), 263-269, 2006
pdf file http://dx.doi.org/10.1007/s10832-006-9862-8
- C. R.
Bowen, J. Gittings, I. G. Turner, F. Baxter, and J. B. Chaudhuri, Dielectric
and piezoelectric properties of hydroxyapatite-BaTiO3
composites, Applied Physics Letters 89, 132906, 2006 pdf file http://dx.doi.org/10.1063/1.2355458 (also published in Virtual
Journal of Biological Physics Research -- 2006, Volume 12, Issue
7)
- S.Panteny,
C.R.Bowen and R.Stevens, Characterisation of barium titanate-silver
composites, part I: Microstructure and mechanical properties, Journal
of Materials Science, 41, 3837-3843, 2006 pdf file http://dx.doi.org/10.1007/s10853-005-5163-x
- S.Panteny,
C.R.Bowen and R.Stevens, Characterisation of barium titanate-silver
composites part II: Electrical properties, Journal of Materials Science, 41, 3845-3851, 2006 pdf file http://dx.doi.org/10.1007/s10853-005-5162-y
- C.R. Bowen
and D. P. Almond, Modelling the ‘universal’ dielectric
response in heterogeneous materials using microstructural electrical
networks, Materials Science and Technology 22, 719-724, 2006
pdf file http://dx.doi.org/10.1179/174328406X101328
- C.R.
Bowen, R. Stevens, L. J. Nelson, A. C. Dent, G. Dolman, B. Su, T.W.
Button, M.G. Cain and M. Stewart, Manufacture and characterization of high
activity piezoelectric fibres,
Smart Materials and Structures, 15 295–301, 2006 pdf file http://dx.doi.org/10.1088/0964-1726/15/2/008
- S.V.Bezus,
V.Yu. Topolov and C.R.Bowen. High-performance 1-3-type composites
based on (1 -x)Pb({A1/3}Nb2/3)O3 –
xPbTiO3 single crystals (A = Mg,Zn), J. Phys. D: Appl. Phys. 39, 1919-1925, 2006 pdf file http://dx.doi.org/10.1088/0022-3727/39/9/029
- D P Almond, C.R.Bowen and
D.A.S.Rees, Composite dielectrics and conductors: simulation,
characterisation and design, J. Phys. D: Appl. Phys.
39, 1295-1304, 2006 pdf file http://dx.doi.org/10.1088/0022-3727/39/7/S03
- R. Ramesh, H. Kara and C. R.
Bowen, Finite element
modelling of dense and porous piezoceramic disc hydrophones, Ultrasonics,
43, 173-181, 2005 pdf file http://dx.doi.org/10.1016/j.ultras.2004.05.001
- A.C.Dent, L.J.Nelson, C.R.Bowen,
R.Stevens, M.Cain and M.Stewart, Characterisation and properties of fine
scale PZT fibres, J. Euro. Ceram.
Soc., 25. 2387-2391, 2005 pdf file http://dx.doi.org/10.1016/j.jeurceramsoc.2005.03.067
- S.Panteny, R.Stevens and
C.R.Bowen, The frequency dependent permittivity and ac conductivity of
random electrical networks, Ferroelectrics, 319, 425-434,
2005 pdf file http://dx.doi.org/10.1080/00150190590965884
- L.Burianova,
C.R.Bowen, M.Prokopova and M.Sulc, Laser interferometric displacement
measurements of multi-layer actuators and PZT ceramics, Ferroelectrics,
319, 425-434, 2005 pdf
file http://dx.doi.org/10.1080/00150190590967026
- J.K.Kar, R.Stevens and C.R.Bowen,
Processing and characterisation of Pr-zircon pigment powder, Advances
in Applied Ceramics, 104, 233-238, 2005 pdf file http://dx.doi.org/10.1179/174367605X16699
- V.Yu.Topolov, S.V.Glushanin and C.R.Bowen,
Piezoelectric response of porous ceramic and composite materials based on
Pb(Zr,Ti)O3: experiment and modelling, Advances in Applied Ceramics, 104, 300-305, 2005 pdf file http://dx.doi.org/10.1179/174367605X73335
- C.R.Bowen,
A.Perry, A.C.F.Lewis and H.Kara, “Processing and properties of
porous piezoelectric materials with high hydrostatic figures of
merit”, J. Euro. Ceram. Soc.,
2004, 24, 541-545 pdf file http://dx.doi.org/10.1016/S0955-2219(03)00194-8
- D.P.Almond and
C.R.Bowen, “Anomalous power law dispersions in ac conductivity and
permittivity shown to be characteristic of microstructural electrical
networks”, Phys. Rev. Lett., 92, 15 157601-(1-4),
2004 pdf file http://dx.doi.org/10.1103/PhysRevLett.92.157601
- C.Bowen, ”Shaping the future
of sports equipment”, Materials World, 12, 24-26, 2004
pdf file
- Nelson LJ, Bowen CR, Stevens R,
Cain M, Stewart M,
“Evaluation of high field responses of fine scale
piezoelectric fibres”, Integrated Ferroelectrics, 63,
553-559,2004 pdf file http://dx.doi.org/10.1080/10584580490458595
- S.Panteny, R.Stevens, C.R.Bowen,
“Characterisation and modelling of barium titanate-silver
composites”, Integrated Ferroelectrics, 63, 643-647,
2004 pdf
file http://dx.doi.org/10.1080/10584580490459215
- V.Y.Topolov and C.R.Bowen,
“High piezoelectric sensitivity composites based on ferroelectric
ceramics”, Integrated Ferroelectrics, 63, 683-689,
2004 pdf file http://dx.doi.org/10.1080/10584580490459378
- H. Kara, R.Ramesh, R.Stevens,
N.Jayasundere, V.Humphrey, C.R.Bowen, “Hydrophone arrays assembled
from PZT ceramic foams”, Integrated Ferroelectric, 63,
713-718, 2004 pdf
file http://dx.doi.org/10.1080/10584580490459512
- R.Ramesh, H.Kara and C.R.Bowen,
“Characteristics of piezoceramic and 3-3 piezocomposite hydrophones
evaluated by finite element modelling”, Computational
Materials Science, 30, 397-403, 2004 pdf file http://dx.doi.org/10.1016/j.commatsci.2004.02.027
- Pritchard J, Ramesh R, Bowen CR,
Time-temperature profiles of multi-layer actuators, Sensors and
Actuators A–
Physical, 115 (1): 140-145, 2004 pdf file http://dx.doi.org/10.1016/j.sna.2004.04.019
- Kar JK, Stevens R, Bowen CR, Novel
terbium-zircon yellow pigment, Journal of Materials Science, 39(18). 5755-5763, 2004 pdf file http://dx.doi.org/10.1023/B:JMSC.0000040086.92465.50
- C.R.Bowen, A.Perry and H.Kara,
“Review of 3-3 piezoelectric composites”, Recent. Res. Devel. Mat. Sci.,
2003, 4, 631-646 ISBN 81-271-0022-6
- D.Deegan, C.Chapman and C. Bowen
, “The production of
shaped glass-ceramic materials from inorganic waste precursors using
controlled atmospheric DC plasma vitrification and crystallisation”,
High Temperature Material Processes,
7 (3): 367-372 2003
ISSN:1093-3611 word file http://dx.doi.org/10.1615/HighTempMatProc.v7.i3.100
- H. Kara, R.
Ramesh, R. Stevens, and C. R. Bowen, “Porous PZT ceramics for
receiving transducers”, IEEE Ultrasonics, Ferroelectrics and
Frequency Control, 2003, 50, 189-196 pdf file http://dx.doi.org/10.1109/TUFFC.2003.1193622
- C.R.Bowen and V.Yu. Topolov,
“Piezoelectric sensitivity of PbTiO3-based ceramic/polymer
composites with 0-3 and 3-3 connectivity, Acta Materialia,
2003, 51, 4965-4976 pdf file http://dx.doi.org/10.1016/S1359-6454(03)00283-0
- H.Kara,
A.Perry, R.Stevens and C.R.Bowen “Interpenetrating PZT/polymer
composites for hydrophones”, Ferroelectrics, 2002, 265,
317-332 http://dx.doi.org/10.1080/00150190208260632
- J.Pritchard and C.R.Bowen,
”Characterisation of multi layer actuators”, Ferroelectrics,
2002, 273, 255-260 pdf file http://dx.doi.org/10.1080/001501902320326565
- R.Ramesh, H.Kara and C.R.Bowen,
“The dielectric, mechanical and piezoelectric properties of 3-3
piezoelectric composites”, 2002, Ferroelectrics, 273,
2761-2766 pdf
file http://dx.doi.org/10.1080/001501902320326772
- A.Perry, C.R.Bowen, SMahon and H.Kara,“PZT-polymer
composites for hydrophones: Production and modelling”, Key.
Eng. Mat., Vols, 206-213, 1505-1508, , ISSN 0113-9826, 2002 pdf file
- C.R.Bowen and H.Kara, “Pore
anisotropy in 3-3 piezoelectric composites”, Materials Chemistry and
Physics, 2002, 75, 45-49 pdf file http://dx.doi.org/10.1016/S0254-0584(02)00028-7
- H.Kara, A.Perry, R.Stevens and
C.R.Bowen, “Modelling 3-3 composites for hydrophones”, British Ceramic Transactions, 2002, 101, 139-142 word file http://dx.doi.org/10.1179/096797802225003370
- L.Nelson and C.R.Bowen
“Determination of the piezoelectric properties of fine scale PZT
fibres”, Key. Eng.
Mat. Vols. 206-213, 1509-1512, ISSN 0113-9826, 2002 pdf file
- S.Panteny, C.R.Bowen and
R.Stevens,“Investigation into the processing and characterisation of
piezoelectric nanocomposites”, Key. Eng. Mat., Vols. 206-213, 1313-1316, ISSN 0113-9826, 2002 pdf file
104. C.R.Bowen, A.Perry, R.Stevens and S.Mahon, “Analytical
and Numerical Modelling of 3-3 Piezoelectric Composites”, Integrated
Ferroelectrics, 2001, 32, 333-342 word file http://dx.doi.org/10584580108215704
105. C.R.Bowen, A.Perry, Kara and S.Mahon, “Analytical
modelling of 3-3 piezoelectric composites”, J. Euro. Ceram.
Soc., 2001,21, 1463-1467 pdf
file http://dx.doi.org/10.1016/S0955-2219(01)00042-5
106. J.Pritchard, C.R.Bowen and
F.Lowrie, "Multilayer actuators:review", British Ceramic Transactions,
2001, 100, 265-273 pdf
file
107. Y.B.Lee, H.C.Park, K.D.Oh, C.R.Bowen, R.Stevens, “Self-propagating high-temperature synthesis
of ZrB2 in the system ZrO2-B2O3-Fe2O3-Al”,
J.
Mat. Sci. Lett. 2000, 19, 469-471 pdf file
http://dx.doi.org/10.1023/A:1006785116395
108. C.R.Bowen, S.Mahon and M. Lopez Prieto, “Non
destructive evaluation of multi-layer actuators”, Ferroelectrics, 2000,
241, 1843-1850 word file http://dx.doi.org/10.1080/00150190008224992
109. C.R.Bowen, M. Lopez Prieto, “Impedance spectroscopy of
piezoelectric actuators”, Scripta Materialia, 2000, 42,
813-818 pdf file http://dx.doi.org/10.1016/S1359-6462(00)00300-6
110. C.R.Bowen, J.Open, S.Mahon and J.Fitzmaurice, “Fast
firing of electroceramics”, Ferroelectrics 1999, 228, 159-166 word file http://dx.doi.org/10.1080/00150199908226133
111. C.R.Bowen, A.W.Tavernor and R.Stevens,
“Microstructural design of sensor materials using the core-shell
concept”, J. Euro. Ceram. Soc., 1999, 19,
149-154 pdf
file http://dx.doi.org/10.1016/S0955-2219(98)00198-8
112. A.Perry, C.R.Bowen and S.Mahon, “Modelling of 3-3
piezocomposites”, Scripta Materialia, 1999, 41,
1001-1007 pdf file http://dx.doi.org/10.1016/S1359-6462(99)00249-3
113. C.R.Bowen, A.Bowles, S.Drake, N.Johnson and S.Mahon,
“Fabrication and finite element modelling of interdigitated
electrodes”, Ferroelectrics, 1999, 228, 257-269 word
file http://dx.doi.org/10.1080/00150199908226140
114. A.Perry, S.Mahon and C.R.Bowen, “Modelling of 3-3
piezocomposites”, Brit. Ceram. Proc., 1999, 60,
503-504 word file
115. C.R.Bowen, R.Singh, G.Gill and S. Lawson, “Impedance
spectroscopy of CuO doped Y-TZP”, J. Mat. Sci., 1998, 33, 5103-5110 pdf file http://dx.doi.org/10.1023/A:1004455130927
116. P.Birkin, C.Delaplace and C.R.Bowen, “Photographic and
electrochemical detection of cavitation phenomena within a variable frequency
acoustic field”, J. Phys. Chem. B, 1998, 102,
10885-10893 pdf file http://dx.doi.org/10.1021/jp9829501
117. C.R.Bowen and B.Derby,“Self-propagating high
temperature synthesis of ceramic materials”, Brit. Ceram. Trans.,
1997, 96, 25-31 word file
118. C.R.Bowen and R.Stevens, “Design of microstructures
using the core-shell concept”, Brit. Ceram. Proc., 1996, 55, 23-30 word file
119. C.R.Bowen and B.Derby, “The formation of TiC/Al2O3
microstructures by a self-propagating high-temperature synthesis
reaction”, J. Mat. Sci.,
1996, 31, 3791-3803 pdf
file http://dx.doi.org/10.1007/BF00352794
120. D.Holz, S.Pagel, C.Bowen, S.Wu and N.Claussen,
“Fabrication of low-to-zero shrinkage reaction-bonded mullite
composites”, J.Euro. Ceram. Soc., 1996, 16,
255-260 pdf
file http://dx.doi.org/10.1016/0955-2219(95)00137-9
121. C.R.Bowen and B.Derby,“Finite-difference modelling of
self-propagating high-temperature syntheses of materials”, Acta
metall. mater., 1995, 43, 3903-3913 pdf file
http://dx.doi.org/10.1016/0956-7151(95)90173-6
122. C.R.Bowen and B.Derby, “Differential thermal analysis
of ignition temperatures in a self-propagating high-temperature
reaction”, J.Therm. Anal., 1994, 42, 713-719 word
file http://dx.doi.org/10.1007/BF02546744
123. C.R.Bowen and B.Derby, “Modelling of self-propagating
high-temperature synthesis reactions”, Brit. Ceram. Proc.,1993,
50, 29-38 word
file
Selected conference papers:
- R.W.C. Lewis, A.J.
Merrick, A.C.E. Dent, C.R.Bowen et al.,The Influence of Mechanical Stress
on Piezoceramic Tubes, IEEE International Symposium on the Applications of
Ferroelectrics (ISAF), Edinburgh, AUG 09-12, 2010, 2010 IEEE
INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS (ISAF),
2010
- P.F. Giddings,
C.R. Bowen, H.A. Kim, Characterisation of force-deflection behaviour of
piezoelectrically actuated bistable composite laminate under two-axis
constraint, 3rd International Conference on Smart Materials, Structures and
Systems, Acireale, ITALY Date: JUN 08-13, 2008 Book Series:
Advances in Science and Technology Volume: 56 Pages: 380-385 Published: 2009
- C.R. Bowen,
K.S. Raman, V.Yu Topolov, Piezoelectric composites based on
hydroxyapatite/barium titanate
3rd International Conference on Smart Materials, Structures and
Systems, Acireale, ITALY Date: JUN 08-13, 2008, SMART MATERIALS
& MICRO/NANOSYSTEMS Book
Series: Advances in Science and Technology Volume: 54 Pages: 1-6 Published: 2009
- S.Y. Hao, J.
Taylor, A.W. Miles, C.R.Bowen An Implantable Electronic System for in-vivo
Stability Evaluation of Prosthesis in Total Hip and Knee Arthroplasty ,
26th IEEE International Instrumentation and Measurement Technology
Conference, MAY 05-07, 2009 Singapore, SINGAPORE, I2MTC: 2009 IEEE
INSTRUMENTATION & MEASUREMENT TECHNOLOGY CONFERENCE, VOLS
1-3 Book Series: IEEE
Instrumentation and Measurement Technology Conference 167-172 (2009)
- D.T. Branson,
F.C. Wang FC, D.N. Johnston DN, D.G. Tilley, C. R. Bowen and P.S.Keogh,
Modeling for a high-bandwidth high-flow valve design based on Horbinger
plate operation, ASME Fluids
Engineering Division Summer Conference, AUG 10-14, 2008 Jacksonville, FL, PROCEEDINGS OF THE ASME FLUIDS
ENGINEERING DIVISION SUMMER CONFERENCE -2008, VOL 1, PT A AND B Pages:
967-972, 2009
- D.T. Branson,
F.C.Wang FC, C.R. Bowen, P.S. Keogh PS Dynamic simulation model of a
hydraulic valve utilizing the harbinger plate principle and piezoactuation
to achieve high bandwidth and flow performance, ASME International
Mechanical Engineering Congress and Exposition, Oct 03-Nov 06, 2008
Boston, MA, IMECE 2008: PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL
ENGINEERING CONGRESS AND EXPOSITION, VOL 5 Pages: 125-132 Published: 2009
- P.F. Giddings,
C.R. Bowen, H.A.Kim, Characterisation of force-deflection behaviour of
piezoelectrically actuated bistable composite laminate under two-axis
constraint, 3rd International Conference on Smart Materials, Structures and
Systems, JUN 08-13, 2008 Acireale ITALY, EMBODING INTELLIGENCE IN
STRUCTURES AND INTEGRATED SYSTEMS
Volume: 56 Pages:
380-385 Published: 2009
- C.R.Bowen,
K.S.Raman, V.Y.Topolov,
Piezoelectric composites based on hydroxyapatite/barium titanate,
3rd International Conference on Smart Materials, Structures and Systems,
JUN 08-13, 2008 Acireale ITALY, SMART MATERIALS &
MICRO/NANOSYSTEMS
Volume: 54 Pages:
1-6 Published: 2009
- A.K. Bullock,
D.G.Tilley, D.N. Johnston, P.Keogh et al. Non-linear friction in
reciprocating hydraulic rod seals: simulation and measurement, 7th
International Conference on Modern Practice in Stress and Vibration
Analysis, INTERNATIONAL CONFERENCE ON MODERN PRACTICE IN STRESS AND
VIBRATION ANALYSIS, Journal of Physics Conference Series 181, 012009 (2009) DOI: 10.1088/1742-6596/181/1/012009
- S. Phani, R.
Butler, S.Habgood, C. R.
Bowen, Analysis of Wing Morphing via Frame Buckling, 49th
AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials
Conference, 7 - 10 April 2008, Schaumburg, AIAA 2008-1792 first
page pdf file
- S.Y.Hao, J.
Taylor J, A.W. Miles and C.R. Bowen CR, An Implantable System for the in
vivo Measurement of Hip and Knee Migration and Micromotion International
Conference on Signals and Electronic Systems (ICSES 2008), SEP 14-17, 2008
Cracow, POLAND, ICSES 2008 INTERNATIONAL CONFERENCE ON
SIGNALS AND ELECTRONIC SYSTEMS, CONFERENCE PROCEEDINGS Pages: 445-448 Published: 2008
- J.P. Gittings,
C.R. Bowen CR, A.C.E. Dent et al., Dielectric properties of hydroxyapatite based ceramics, 4M2008: Proceedings of the 4th
International Conference on Multi-Material Micro Manufacture, Whittles
Publishing, ed. S.Dimov, page 157-160, (2008) ISBN 978-1904445-76-0
- S. Hao, J.
Taylor, A.W. Miles, C.R.
Bowen, C.R., An implantable
system for the in vivo measurement of hip and knee migration and
micromotion 2008
ICSES'08 - ICSES 2008 International
Conference on Signals and Electronic Systems, Proceedings, art. no.
4673462, pp. 445-448
- C.R.Bowen,
D.W.E.Allsopp, R.Stevens, P.Shields and W.N.Wang, “Modelling and
design of GaN based piezoelectric MEMS”, Proceedings 4M 2006
- SECOND INTERNATIONAL CONFERENCE ON MULTI-MATERIAL MICRO MANUFACTURE, Edited
by W.Menz, B.Fillon and S. Dimov, 20-22 Sept. 2006, Grenoble, France, pp
179-182, 2006 ISBN: 0-08-045263-0
- C.R.Bowen,
A.C.Dent, R.Stevens, M.Cain and M.Stewart “Determination of critical
and minimum volume fraction for composite sensors and actuators”, Proceedings
4M 2005 - FIRST INTERNATIONAL CONFERENCE ON MULTI-MATERIAL MICRO
MANUFACTURE, Edited by Stefan Dimov, Cardiff University, Cardiff, UK and
W. Menz, Germany, Elsevier, pp 483-487, 2005 ISBN: 0-08-044879-8 pdf file
- D.Regonini,
C.R.Bowen, D.Allsopp and R.Stevens, “Nano-porous structures prepared
by electrochemical anodisation of aluminium”, Proceedings 4M 2005
- FIRST INTERNATIONAL CONFERENCE ON
MULTI-MATERIAL MICRO MANUFACTURE, Edited by Stefan Dimov, Cardiff
University, Cardiff, UK and W. Menz, Germany, Elsevier, pp 135-138. 2005
ISBN: 0-08-044879-8 pdf
file
- L.J.Nelson,
C.R.Bowen, R.Stevens, M.Cain, M.Stewart, "Modelling and measurement
of piezoelectric fibres and interdigitated electrodes for the optimisation
of piezofibre composites" Smart Structures and Materials 2003: Active
Materials: Behaviour and Mechanics (ed. D.C.Lagoudas), Proceedings
of the Society of Photo-optical Instrumentation Engineers (SPIE)
5053 556-567, 2003, Smart Structures and Materials 2003 Conference, Sand
Diego, California, 2-6 March, 2003 pdf file
- L.J.Nelson,
C.R.Bowen, R.Stevens, M.Cain, M.Stewart, "High field behaviour of
piezoelectric fibre composites", Smart Structures and Materials 2003:
Active Materials: Behaviour and Mechanics (ed. D.C.Lagoudas), Proceedings
of the Society of Photo-optical Instrumentation Engineers (SPIE)
5053,544-555, 2003, Smart Structures and Materials 2003 Conference, Sand Diego,
California, 2-6 March, 2003 pdf file
- H. Kara, R.Ramesh, R.Stevens, C.R.Bowen,
N.Jayasundere and V.Humphrey, “Testing of hydrophone arrays from PZT
ceramic foams”, J.Conf. Abs., 2003, 8, 174 ISSN
1362-0886
- L.J.Nelson, C.R.Bowen,R.Stevens, M.Cain and
M.Stewart, “High field response of fine scale piezoelectric
fibres”, J.Conf. Abs., 2003, 8, 241 ISSN 1362-0886
- S.Panteny, R.Stevens and C.R.Bowen,
“Characterisation and modelling of barium titanate-silver composites”,
J.Conf.
Abs., 2003, 8, 253 ISSN 1362-0886
- V.Yu.Topolov and C.R.Bowen, “High
piezoelectric sensitivity of composites based of ferroelectric ceramics:
A.Review”, J.Conf. Abs., 2003, 8, 334 ISSN
1362-0886
- H.Kara,
A.Perry and C.R.Bowen, “Modelling of 3-3 piezocomposites for
hydrophones”, Ferroelectrics UK 2001, Maney publishing, London, ISBN
1-902653-70-X, pp 71-78, 2002
- R.Ramesh, H.Kara and C.R.Bowen, “Development
of piezocomposite hydrophones”, Proceedings of ICONS 2002,
International Conference on SONAR, Sensors and Systems, p 727-732, 11-13 December 2002, Cochin, India,
Allied Publishers;2002, Eds. H.R.S Sastry, D.D.Ebenezer and
T.V.S.Sundaram,
- C.R.Bowen, A.Perry, R.Stevens and S.Mahon,
“Materials parameter determining the performance of 3-3 piezocomposites”,
V.Stefan (Editor in Chief), Ferroelectrics Vol. 1, ISSN
1543-4028, 3-22, 2002
- H.Kara, A.Perry, R.Stevens and C.R.Bowen,
“3-3 piezocomposites: a comparison between the models and
experiments”, Ceramics Engineering & Science
Proceedings, 2001, 22(No.4), 543-554 ISSN 0196-6219
- A.Perry, C.R.Bowen, H.Kara and S.Mahon,
“Modelling 3-3 Piezocomposites”, Electrical Engineering
Analysis & Design V, WIT Press 2001, 67-76, ISBN 1-85312-866-X
- S.Panteny and C.R.Bowen, “Piezoelectric
Nanocomposites”, Ferroelectrics 2000 UK, p75-82,
IOM Communications, Eds. N.Alford and E.Yateman, ISBN 1-86125-135-1
- A.Perry,
R.Stevens and C.R.Bowen, ”Modelling 3-3 Piezocomposites”, Ferroelectrics
2000 UK, p67-74, IOM Communications, Eds. N.Alford and E.Yateman,
ISBN 1-86125-135-1
- C.R.Bowen, R.Stevens, A.Perry and S.Mahon,
“Optimisation of materials and microstructure in 3-3
piezocomposites”, Design for Excellence, Engineering Design
Conference 2000, 361-370, ISBN 1 86058 259 1
- C.R.Bowen, H-P.S.Li and R.Stevens, “Microstructural
design using the core-shell concept”, Fourth Euro Ceramics
Proceedings, Vol. 3, 493-500 (1996), Edited by S.Merlani and
V.Sergo
- N.Claussen, C.R.Bowen, D.Holz and S.Wu,
“Combination of transformation and nanotoughening in mullite
composites”, 5th International Symposium
on Ceramic Materials and Components, 1995, Ch. 186, pp352-353
- C.R.Bowen, S.Wu and N.Claussen,
“Zero-shrinkage ceramics”, Proceedings of the 8th
CIMTEC Ceramics Congress, Advances in Science & Technology 1995 Vol 3C pp 1839-1850 ISBN
8886538022
- C.R.Bowen, S.Hullsman and B.Derby,
“Preliminary studies on the manufacture of multiphase ceramics by
self-propagating high-temperature synthesis”, Proceedings of the 2nd
European Ceramics Society, edited G.Ziegler and H.Hausner, 1991, p
631 (Deutsche Keramische Gesellschaft, Köln, Germany)
word file
- T.J.Mays, B.McEnaney, C.R.Bowen and
M.Mahamud-Lopez, “Fractal analyses of graphite fracture
surfaces”, Proceedings of the 20Th
Conference on Carbon, June 23-28, 1991, University of California,
Santa Barbara, U.S.A., Electrochemical Soc. Inc., p580-581, 1991 word file