INVITED TALKS
“Exceptionally
directional antennas with photonic band gap materials” 2001 URSI International
Symposium on Electromagnetic Theory, Victoria, Canada, May 2001
“Structure of
colloidal photonic crystals” and
“Antenna
Applications of Photonic crystals”, NATO Advanced Study Institute on Photonic
Crystals, Crete, Greece, June19-30 (2000)
“Atomic
mechanisms of metastability in amorphous silicon” Invited talk, Materials
Research Society Spring Meeting (April 2000) & University of Cincinnati
(June 2000).
“Unusual
behavior of hydrogen in silicon- connecting atomistic simulations to
experimental phenomena” Materials Design: experimental and computational
challenges. Mardi Gras Year 2000 conference, Louisiana State University, March
2000.
“Photonic band
gap crystals- theory and experiment”, Seminar, State University of New York
(SUNY), Buffalo. December 1999.
“Metastability
in amorphous silicon”, Seminar, Jadavpur Univ, Calcutta (June 1999).
“Dipole antennas
on three-dimensional photonic band gap crystals”, IEEE Antennas and Propagation
Society International Symposium, Atlanta, GA, June 1998 (talk given by M.
Sigalas)
“Unusual
behavior of hydrogen in silicon”, Condensed Matter Physics Seminar, Ohio
University, Athens, Ohio, May 1998
“Unusual
behavior of hydrogen in silicon and amorphous silicon” Seminar, Tata Institute
of Fundamental Research, Bombay, India, August 1997; Jadavpur University,
Calcutta, July 1997.
“Recent
progess in Photonic band gap materials”, Seminar, University of Delaware, May 1997.
“Photonic
band gap materials- Theory and Experiment” Tata Institute of Fundamental
Research, Bombay, India, July 1995.
“Optimized
Antennas on Photonic band gap crystals” NATO ASI workshop on Photonic band gap
crystals, Elounda, Greece, June 1995
“Structural
Relaxation at Charged Defects in a-Si:H” NREL Defect relaxation workshop,
Denver, February 1995
"Molecular
dynamics of thin film growth and
amorphous semiconductors" DOE workshop on applications of molecular
dynamics to SiC systems, Santa Barbara, CA, August 1993
"Understanding
semiconductor physics through molecular dynamics," Colloquium, Department
of Physics, Iowa State University, March 1993.
"Understanding
semiconductor physics through molecular dynamics," Colloquium, Department
of Physics, Kansas State University, February 1993.
"Thermal
conductivity of amorphous solids with molecular dynamics simulations"
Seminar at Workshop on heat transport in glasses above 10K, 7th International
Conference on Phonon Scattering in Condensed Matter, Ithaca, NY, August 1992
"Molecular
dynamics of semiconductors," Colloquium, Department of Physics,
University
of Missouri, Columbia, January 1992.
"Understanding
the light-induced degradation in a-Si:H with molecular dynamics
simulations," American Metallurgical Society, Symposium on computer
simulation applied to phase transformations, Invited talk, Cincinnati, October
1991.
"Theory
of the structure of a-Si:H," American Physical Society March Meeting,
Invited Talk, Cincinnati, March 1991.
"What we
can learn about semiconductor materials from molecular dynamics
simulations,"
Colloquium, Department of Materials Science, University of
Illinois,
Urbana-Champaign, January 1991.
"Molecular
dynamics simulations of amorphous silicon," Materials Research Society
Meeting, Invited talk - Amorphous Silicon Symposium, San Francisco, April 1990.
"New
perspectives on the properties of amorphous silicon with molecular
dynamics
simulations," Colloquium, Dept. of Electrical Engineering, Princeton
University,
Princeton, New Jersey, March 1990.
"Molecular
dynamics simulations of the structural properties of amorphous
silicon" Seminar, Solar Energy Research Institute,
Golden, Colorado,
February 1990.
"Properties
of amorphous silicon," 1989 Midwest Solid State Symposium, Invited talk,
Indiana University, October 1989.
"Structural,
Vibrational, and electronic properties of amorphous silicon"
Seminar,
Pennsylvania State University, December 1988.
“H-bonding
and vibrational modes on tungsten surfaces” Seminar, AT&T Bell Laboratories,
March 1986.
“Modeling
silicon with two- and three-body interatomic potentials” Condensed Matter
Physics Seminar, Harvard University, November 1985.
Amorphous
silicon and solar cell material workshop talks (22) presenting recent progress
in simulations of the light-induced degradation in a-Si:H
Collaborators invited talks
involving joint research:
“Photonic
band gap crystals” E. Ozbay, American Physical Society March Meeting, Invited
Talk, San Jose, March 1995.
“Neutron
Scattering from Solids: Experiment and Computer Simulation”, W. Kamitakahara,
American Physical Society March Meeting, Invited Talk, St. Louis, March 1989.
(Joint work)
Collaborators
such as C.M. Soukoulis and K.M. Ho have presented several (>30) talks on
photonic band gap materials involving joint work.
Materials
Research Society Spring Meeting. April 2000. San Francisco, April 2000,
Structure and Hydrogen session. April 2001 Metastability session.
International
Conference on Microcrystalline and Amorphous Semiconductors. Utah, August 1999.
Session on Glasses 1
Publication List: Refereed Journal Papers:
1.
R. Biswas
and V. Ambegaokar, "Phonon spectrum of a model of electronically excited
silicon," Phys. Rev. B 26, 1980
(1982).
2.
V. Ambegaokar
and R. Biswas, "Phonon instabilities in electronically excited
semiconductors," Phys. Rev. Lett. 50,
285 (1983) Comment.
3.
R. Biswas
and M. Kertesz, "Electronic structure and metallization of silicon,"
Phys. Rev. B 29, 1791 (1984).
4.
R. Biswas,
R. M. Martin, R. J. Needs, and O. H. Nielsen, "Complex tetrahedral structures of silicon and carbon
under pressure," Phys. Rev. B 30,
3210 (1984).
5.
R. Biswas
and D. R. Hamann, "Interatomic
potentials for silicon structural energies," Phys. Rev. Lett. 55, 2001 (1985).
6.
R. Biswas
and D. R. Hamann, "Simulated annealing of silicon clusters in Langevin
molecular dynamics," Phys. Rev. B 34,
895 (1986).
7.
R. Biswas
and D. R. Hamann, "Bonding geometry and H vibrations of W(001),"
Phys. Rev. Lett. 56, 2291 (1986).
8.
R. Biswas,
R. M. Martin, R. J. Needs and O. H. Nielsen, "Stability and electronic
properties of complex structures of silicon and carbon under pressure - density
functional calculations," Phys. Rev. B 35, 9559 (1987).
9.
R. Biswas
and D. R. Hamann, "New classical models for silicon structural
energies," Phys. Rev. B 36,
6434 (1987)
10.
R. Biswas,
G. S. Grest, and C. M. Soukoulis, "Generation of amorphous silicon structures using molecular dynamics
simulations," Phys. Rev. B 36,
7437 (1987).
11.
R. Biswas,
A. M. Bouchard, W. A. Kamitakahara, C. M. Soukoulis, and G. S. Grest,
"Vibrational localization in amorphous silicon," Phys. Rev. Lett. 60, 2280 (1988).
12.
R. Biswas,
G. S. Grest and C. M. Soukoulis, "Molecular dynamics simulation of cluster and atom deposition on
silicon (111)," Phys. Rev. B 38,
8154 (1988).
13.
A. M.
Bouchard, R. Biswas, W. A. Kamitakahara, C. M. Soukoulis, and G.S. Grest,
"Vibrational properties of amorphous silicon-germanium alloys and
superlattices," Phys. Rev. B 38,
10499 (1988).
14.
W. A.
Kamitakahara, R. Biswas, A. M. Bouchard, and F. Gompf, "Dynamics of
Amorphous Semiconductors: Experiment and Computer Simulation," Physica B 156-157, 213 (1989).
15.
R. Biswas,
I. Kwon, A. M. Bouchard, C. M. Soukoulis, and G. S. Grest, "Intense
Small-Wavevector Scattering from Voids in Amorphous Silicon - A Theoretical
Simulation," Phys. Rev. B 39,
5101 (1989).
16.
R. Biswas,
C. Z. Wang, C. T. Chan, K. M. Ho and C. M. Soukoulis, "Electronic
structure of dangling and floating bonds in amorphous silicon," Phys. Rev.
Lett. 63, 1491 (1989).
17.
I. Kwon, R.
Biswas, G. S. Grest, and C. M. Soukoulis, "Molecular dynamics simulation
of amorphous and epitaxial Si growth on Si (111)," Phys. Rev. B. 41, 3678 (1990).
18.
C.
Soukoulis and R. Biswas, "A theoretical investigation on structural, vibrational
and electronic properties of amorphous silicon," in 2nd International
Workshop on Non-Crystalline Solids, ed. J. Colmenero (World Sci. 1990).
19.
R. Biswas,
C. Z. Wang, C. T. Chan, K. M. Ho and C. M. Soukoulis, “Electronic structure of
dangling and floating bonds in amorphous silicon," Electrochemical Society
Journal 91-4, 463 (1990).
20.
I. Kwon, R.
Biswas, and C. M. Soukoulis, "Molecular dynamics simulations of the
stability of amorphous silicon," Phys. Rev. B 43, 1859 (1991) (Rapid Communications).
21.
Y. H. Lee,
R. Biswas, C. M. Soukoulis, C. Z. Wang, C. T. Chan, and K.M. Ho,
"Molecular dynamics simulation of the thermal conductivity of amorphous
silicon," Phys. Rev. B 43, 6573
(1991).
22.
R. Biswas,
I. Kwon, and C. M. Soukoulis, "Mechanism of the Staebler-Wronski effect in
a-Si:H," Phys. Rev. B 44, 3403
(1991) (Rapid Communications).
23.
I. Kwon, R.
Biswas, and C. M. Soukoulis, "Molecular dynamics simulations of the
Staebler-Wronski effect in hydrogenated amorphous silicon," Phys. Rev. B. 45, 3332 (1992).
24.
R. Biswas,
"Simulations of H deposition processes in a-Si:H film growth," J. of
Appl. Physics 73, 3295 (1993).
25.
A. D.
Zdetsis, R. Biswas, " A parallel molecular dynamics strategy for
PVM," NATO Adv. Study Institute on Statics
and Dynamics of Alloy Phase Transformations
ed. P. Turchi and A. Gonis (Plenum 1993).
26.
I. Kwon, R.
Biswas, C. Z. Wang, C. M. Soukoulis, and K. M. Ho, "Transferable
tight-binding models for silicon,"
Phys. Rev. B. 49, 7243 (1994).
27.
E.
Ozbay, G. Tuttle, R. Biswas, M. Sigalas, and K.M. Ho,
"Micromachined millimeter wave photonic band gap crystals," Appl.
Phys. Lett. 64, 2059 (1994).
28.
K.M.
Ho, C.T. Chan, C.M. Soukoulis, R. Biswas and M. Sigalas, "Photonic
Band Gaps in Three dimensions: new layer-by-layer periodic structures"
Solid State Comm. 89, 413 (1994).
29.
E.
Ozbay, A. Abeyta, G. Tuttle, M. Tringides, R. Biswas, C.T. Chan, C.M.
Soukoulis, K.M. Ho, "Measurement of Three-dimensional photonic band gap in
new crystal structure made of dielectric rods", Phys. Rev. B 50, 1945
(1994).
30.
Q. Li, and
R. Biswas, "Transferable
tight-binding models of Si-H systems," Phys. Rev. B. 50, 18090 (1994).
31.
E.
Ozbay, G. Tuttle, R. Biswas, K.M. Ho, J. Bostak, and D.M. Bloom,
"Double-Etch Geometry for millimeter-wave photonic band gap
crystals," Appl. Phys. Lett. 65,
1617 (1994).
32.
E.
Ozbay, E. Michel, G. Tuttle, R. Biswas, K.M. Ho, J. Bostak, and D.M.
Bloom, "Terahertz spectroscopy of three-dimensional photonic band gap
crystals," Optics Letters 19,
1155 (1994).
33.
R. Biswas,
K. Roos, and M. Tringides, "Low Temperature growth on Si(111)
substrates," Phys. Rev. B 50,
10932 (1994).
34.
R. Biswas,
I. Kwon, C.M. Soukoulis, and Q. Li,
“Simulations of defect formation processes in hydrogenated amorphous silicon”,
Solid State Phenomena, 44-46, 723
(1995).
35.
Q. Li and
R. Biswas, “Hydrogen Rebonding and defect formation in a-Si:H”, Phys. Rev B 52, 10705 (1995).
36.
E.
Ozbay, G. Tuttle, M. Sigalas, R. Biswas, S. McCalmont, C.M. Soukoulis,
and K.M. Ho, “Laser Micromachined millimeter wave photonic band gap
structures”, Appl. Phys. Lett. 67,
1969 (1995).
37.
S.D.
Cheng, R. Biswas, E. Ozbay, S. McCalmont, G. Tuttle, and K.M. Ho,
“Optimized Dipole antennas on photonic band gap crystals”, Appl. Phys. Lett. 67, 3399, (1995).
38.
R. Biswas, C.T. Chan, M. Sigalas, C.M. Soukoulis, and K.M. Ho, “Photonic
Band Gap Materials”, NATO Advanced
Study Institute 315, p. 23 (Kluwer,
1995).
39.
R. Biswas, S.D. Cheng, E. Ozbay, S. McCalmont, W. Leung, G. Tuttle, and
K.M. Ho, “Optimized Dipole antennas on photonic band gap crystals”, NATO
Advanced Study Institute 315, p.
377 (Kluwer, 1995).
40.
Q. Li and
R. Biswas, “Bond-length disorder and metastability in a-Si:H”, Appl. Phys.
Lett. 68, 2261 (1996).
41.
M.
M. Sigalas, R. Biswas, and K.- M. Ho, “Theoretical Study of dipole
antennas on photonic band gap materials”, Microwave and Optical Technology
Letters 13, 205 (1996).
42.
R. Biswas, E. Ozbay, and K.M. Ho, “Photonic band gaps with novel
double-etched structures”, J. of Appl.
Phys. 80, 6749 (1996).
43.
M.
Sigalas, R. Biswas, Q. Li, D. Crouch, W. Leung, R. Jacobs-Woodbury, B.
Lough, S. Nielsen, S. McCalmont, G. Tuttle, K.-M. Ho, “Dipole antennas on
Photonic band gap crystals- experiment and simulation”, Microwave and Optical
Technology Letters, 15, 153 (1997).
44.
W.
Leung, R. Biswas, S.D. Cheng, M. M. Sigalas, S. McCalmont, G. Tuttle, and K.M. Ho, “Slot Antennas on photonic
band gap crystals”, IEEE- Transactions on Antennas and Propagation, 45, 1569 (1997). (Letter section).
45.
R. Biswas,
Q. Li, Y. Yoon, and H. M. Branz, “Dangling bond levels and structure relaxation
in amorphous hydrogenated silicon”, Phys.
Rev. B 56, 9197 (1997).
46.
M.M.
Sigalas, C.M. Soukoulis, R. Biswas, and K.M. Ho, “Effect of magnetic
permeability on photonic band gaps”, Phys.
Rev. B 56, 959 (1997).
47.
R. Biswas, M.M. Sigalas, C.M. Soukoulis, and K.M. Ho,“Photonic band
structure”, Chapter IV, page 143, in Topics in Computational Materials Science,
e.d. C. Y. Fong (World Scientific, Singapore and River Edge N.J., 1998). Book
chapter
48.
R. Biswas,
Q. Li, B.C. Pan, Y. Yoon, “Mechanism for hydrogen diffusion in amorphous
silicon”, Phys. Rev. B. 57, 2253
(1998).
49.
R. Biswas
and B.C. Pan, “Microscopic nature of Staebler-Wronski defect formation in
amophous silicon”, Applied Physics Letters. 72, 371 (1998).
50.
R. Biswas, M.M. Sigalas, G. Subramania, and K.M. Ho,“Photonic band gaps
in colloidal systems”, Phys. Rev. B 57,
3701 (1998).
51.
M.M.
Sigalas, C.M. Soukoulis, R. Biswas, and K.M. Ho, “Theoretical
investigation of Defects in Photonic band gap crystals in the presence of
dielectric losses”, Phys. Rev. B. 57,
3815 (1998).
52.
R. Biswas,
Y.-P. Li, and B.C. Pan, “Enhanced stability of deuterium in silicon,” Applied
Physics Letters. 72, 3500 (1998).
53.
S.
Lin, J.G. Fleming, D.L. Hetherington, B.K. Smith (Sandia), R. Biswas,
K.-M. Ho, M.M. Sigalas, W. Zubrzycki, S.R. Kurtz, and J. Bur, “A
Three-dimensional photonic crystal operating at infrared wavelengths”, letters
to Nature 394, 251 (1998) (7-16-98).
54.
W.
Leung, G, Tuttle, M.M. Sigalas, R. Biswas, C.M. Soukoulis, and K.M. Ho,
“High-Q defects in metallic photonic band gap crystals”, Journal of Applied
Physics 84, 4091 (1998).
55.
“M.M.
Sigalas, R. Biswas, K.M. Ho, and C. M. Soukoulis”, Theoretical
investigation of off-plane propagation of electromagnetic waves in
two-dimensional photonic crystals, Phys. Rev. B 58, 6791 (1998).
56.
M.
Sigalas, R. Biswas, K.-M. Ho, W. Leung, G. Tuttle, and D. Crouch,
“Effect of photonic band gap crystals on dipole antennas”, Electromagnetics 19, no. 3, 291 (1999). (special issue,
invited paper)
57.
M.M.
Sigalas, R. Biswas, G. Tuttle, C.M. Soukoulis, and K.M. Ho, “ Photonic
Crystals”, chapter in Wiley Encyclopaedia of Electrical and Electronic
Engineering Volume 16, 345 (John Wiley, 1999). Book Chapter
58.
R. Biswas,
and Y.P. Li, “H-flip model of light induced changes of amorphous silicon”,
Phys. Rev. Letters 82, 2512 (1999).
59.
G.
Subramania, K. Constant, R. Biswas, M.M. Sigalas, K.-M. Ho, “Optical
Photonic crystals fabricated from colloidal systems”, Appl. Phys. Lett. 74, 3933 (1999).[1]
60.
S. Lin, J. Fleming, M.M. Sigalas, R.
Biswas, K.-M. Ho, “in Photonic band gap Microcavity in three dimensions”,
Phys. Rev. B. 59, 15579 (1999) Rapid
Communications.
61.
M.M. Sigalas, R. Biswas, K.-M. Ho,
C.M. Soukoulis, and D.D. Crouch, “Waveguides in three-dimensional metallic
photonic band gap materials”, Phys. Rev. B. 60, 4426 (1999).
62.
M.M. Sigalas, R. Biswas, K.-M. Ho,
C.M. Soukoulis, D. Turner, B. Vasiliu, S.C. Kothari, and Shawn Lin, “Waveguide
bends in three-dimensional layer-by-layer photonic band gap materials”,
Microwave and Opt. Technology Lett. 23,
57 (1999).
63.
M.
M. Sigalas, C. M. Soukoulis, C. T. Chan, R. Biswas, and K. M. Ho
"The effects of disorder on Photonic Band Gaps", Phys. Rev. B 59,
12767 (1999).
64. G. Subramania, K. Constant,
R. Biswas, M.M. Sigalas, K.-M. Ho, “Optical Photonic crystals fabricated
from colloidal systems”, Journal of Lightwave Technology 17, 1970 (1999). (IEEE/OSA Publications, Nov-99).
65.
I. El-Kady, M.M. Sigalas, R. Biswas,
K.-M. Ho, “Waveguides in two-dimensional photonic bandgap materials”, J. of
Lightwave Technology 17, 2042
(1999).
66.
B. Temelkuran, M.
Bayindir, E. Ozbay, R. Biswas, G. Tuttle, M.M. Sigalas, and K-M. Ho,
“Photonic crystal based resonant antenna with a very high directivity”, Journal
of Applied Physics 87, 603 (January-2000).
67.
R. Biswas
and Y.-P. Li, “Metastability in amorphous silicon from hydrogen flips”, J.
Non-Crystalline Solids 266-269, 401
(2000).
68.
R.Biswas, Y.P. Li and B.C. Pan, “Isotopic
effect between hydrogen and deuterium
emission in silicon”, J. Non-Crystalline Solids 266-269, 176 (2000).
69.
R. Biswas, M.M. Sigalas, G. Subramania, C.M. Soukoulis, and K.M. Ho,
“Photonic band gaps of porous solids, Physical Review B 61, 4549 (2000).
70.
G.
Subramania, K. Constant, R. Biswas, M.M. Sigalas, K.-M. Ho, “Synthesis
of thin film photonic crystals”, Synthetic Metals 116, 445-448 (2001).
71.
A. Zakhidov, R. H. Baughman, I. I.
Khayrullin, I. Udod, M. Kozlov, N. Eradat, V. Vardeny, M. Sigalas, and R.
Biswas, “Three-dimensionally periodic conductive nanostructures: network vs
cermet topologies for metallic photonic band gaps”, Synthetic Metals 116, 419-426 (2001).
72.
I.
El-Kady, M.M. Sigalas, R. Biswas, C.M. Soukoulis, K.M. Ho, “Photonic
band gaps in three-dimensional metallic lattices”, Phys. Rev. B 62, 15299 (2000).
73.
“Photonic
Crystals”, M. M. Sigalas, K. M. Ho, R. Biswas, C. M. Soukoulis, in
Optics of Nano Structured materials, p 1-38, Edited by V. A. Markel and T. F.
George, (John Wiley and Sons, New York,
2000). Book Chapter
74.
G.
Subramania, K. Constant, R. Biswas, M.M. Sigalas, K.-M. Ho, “Inverse
face-centered cubic thin film photonic crystals”, Advanced Materials 13, 443-446 (2001).
75.
S. Lin, P. Fleming, M.M. Sigalas, R.
Biswas, and K. -M. Ho, “A complete three-dimensional photonic band gap in a
simple cubic system”, J. of the Optical Society of America B. 18, 32 (2001).
76.
M.
Bayindir, E. Ozbay, B. Temelkuran, M. M. Sigalas, C. M. Soukoulis, R. Biswas,
K. M. Ho, “Guiding, bending, and splitting of electromagnetic waves in highly
confined photonic crystal waveguides”,
Phys. Rev. B 63, 081107(R) (2001).
77.
G.
Subramania, R. Biswas, K. Constant, M. .M. Sigalas, K.-M. Ho,
“Structural characterization of thin film photonic crystals”, Phys. Rev. B. 63, 235111 (2001).
78.
R. Biswas, E. Ozbay, B. Temelkuran, M. Bayindir, M.M. Sigalas, and K-M.
Ho, “Exceptionally directional sources with photonic band gap crystals”, J.
Optical Society of America B. in press. (November-2001)
79.
R. Biswas, E. Ozbay, B. Temelkuran, M. Bayindir, M. M. Sigalas , and
K.-M. Ho, “Exceptionally directional sources with photonic band gap crystals”,
Proceedings NATO Advanced Study Institute on Photonic Crystals and Light
localization in the 21st century, ed. C. M. Soukoulis, pages
321-328 (2001). (Plenum Press)
80.
R. Biswas,
B.C. Pan, “Defect kinetics in new model of metastability in a-Si:H”, to appear
in Journal of Non-Crystalline Solids, (2001).
Submitted
and Under Review:
81.
R. Biswas, “Three-dimensional photonic band gaps in modified simple cubic
lattices”, submitted to Phys. Rev. B.
82.
R. Biswas,
B.C. Pan, and Y. Ye, “Metastability of amorphous silicon from silicon network
rebonding”, submitted to Phys. Rev. Letters.
In
final preparation
83.
M.
Pralle, I. El-Kady, E.A. Johnson, R. Biswas, A. C. Greenwald, J. T.
Daly, B. Kinkade, M. McNeal, N. Moelders, T. George and D. S. Choi, “Tunable
narrow band emitters in the infrared”, to be submitted to Science.
84.
Y.
Ye, R. Biswas, J. Morris, A. Bastawaros, and A. Chandra, Simulation of
Nanoscale machining of copper with molecular dynamics”, in preparation for J.
of Nanotechnology.
Refereed
Papers in Conference Proceedings:
1)
R. Biswas
and D. R. Hamann, "Classical two- and three-body interatomic potentials
for silicon simulations," Mat. Res. Soc. Symp. Proc. 63, 173 (1985).
2)
D. R.
Hamann and R. Biswas, "Classical models for silicon structural
energies," Proceedings, 18th International Conference on Physics of
Semiconductors, Stockholm (1986).
3)
R. Biswas,
A. M. Bouchard, W. A. Kamitakahara, G. S. Grest, and C. Soukoulis,
"Vibrational spectra and vibrational localization in amorphous
silicon," Mater. Res. Soc. Symp. Proc.
41, 213 (1989).
4)
W. A.
Kamitakahara, R. Biswas, A. M. Bouchard, F. Gompf and J. B. Suck,
"Vibrational Spectra for hydrogenated amorphous semiconductors,"
Materials Research Society Symposium Proceedings 166, 361 (1990).
5)
R. Biswas,
I. Kwon, and C. M. Soukoulis, "Molecular dynamics simulations of the
structural, vibrational, and electronic properties of amorphous silicon,"
Materials Research Society Symposium
Proceedings 192, 251 (1990)
(invited paper).
6)
R. Biswas
and I. Kwon, "New Interpretations of the Staebler-Wronski effect in a-
Si:H with molecular dynamics simulations," AIP Conference Proceedings 234, 45 (1991).
7)
R. Biswas,
I. Kwon, and C. M. Soukoulis, "Assessment of weak Si-Si bond breaking
mechanisms of the Staebler-Wronski effect," Mater. Res. Soc. Symp.
Proceedings 219, 99 (1991).
8)
C. R.
Wronski, N. Maley, R. Biswas et al, "Findings and plans of the stable
Materials Advisory Research Team," Proceedings 11th European Photovoltaic
solar energy conference (1992) pages 72-75.
9)
R. Biswas,
K. Roos, and M. Tringides, " Low Temperature Growth Mechanisms for RHEED
oscillations," Mater. Res. Soc. Symp. Proc. 312, 249 (1993).
10)
I. Kwon, R.
Biswas, " Structure and stability of microvoids in a-Si:H" Mater.
Res. Soc. Symp. Proc. 297, 225 (1993).
11)
Q. Li, R.
Biswas and C.M. Soukoulis, "New Approaches to molecular dynamics
simulations of a-Si:H," Mater. Res. Soc. Symp. Proc. 336, 219 (1994).
12)
Q. Li and
R. Biswas, “Metastable defect formation by hydrogen relocation and rebonding”,
Materials Research Society Proceedings 377,
407 (1995).
13)
M. M.
Sigalas, R. Biswas, C. T. Chan, K.M. Ho and C.M. Soukoulis, “Theoretical
studies of photonic band gap materials”, Proceedings 12th annual review of
progress in Applied Computational Electromagnetics p. 436 (1996).
14)
Q. Li and
R. Biswas, “Metastable defects in a-Si:H from bond-length disorder”, Materials
Research Society Proceedings 420,
623 (1996).
15)
R. Biswas
and Q. Li, “Local structural changes around charged dangling bonds”, Materials
Research Society Proceedings 420,
673 (1996).
16)
M. Sigalas,
R. Biswas, K.-M. Ho, W. Leung, G. Tuttle, and D. Crouch, “Applications
of photonic band gap materials” Proceedings 12th annual review of progress in
Applied Computational Electromagnetics
p. 412 (1997).
17)
R. Biswas,
Q. Li, B.C. Pan, and Y. Yoon, “Reactivity and migration of H in a-Si:H”,
Materials Research Society Symposium Proceedings 467, 135 (1997).
18)
M.
Sigalas, R. Biswas, K.-M. Ho, C.M. Soukoulis and D. Crouch, “Waveguides
in photonic band gap crystals”, submitted to Proceedings 14th annual review of
progress in Applied Computational Electromagnetics p. 144 (1998).
19)
R. Biswas
and B.C. Pan, “Microscopic nature of light-induced defects”, MRS Symposium 507, 607 (1998).
20)
R. Biswas,
and Y.P. Li, “H-flip model for metastable structural changes of amorphous
silicon”, Materials Research Society Symp. Proc. 557, 371 (1999).
21)
M.
Bayindir, B. Temelkuran, E. Ozbay, R. Biswas, G. Tuttle, M.M. Sigalas,
and K-M. Ho, Microwave Applications of
Photonic crystals, Proceedings European Microwave Conference, page 520, (2000).
22)
M.
Bayindir, B. Temelkuran, E. Ozbay, R. Biswas, G. Tuttle, M.M. Sigalas,
and K-M. Ho, Photonic crystal based
resonant antenna with a very high directivity, Proceedings, Antennas and
Propagation, Davis, Switzerland (April 2000).
23)
“Narrow
band emission from lithographically defined photonic bandgap structures in
silicon: matching theory and experiment”,
A. C. Greenwald, J. T. Daly, E. A. Johnson, B. Kinkade, M. McNeal, M.
Pralle, and N. Moelders, Ion Optics, Inc, T. George and D. S. Choi, Jet
Propulsion Laboratory, R. Biswas and I. El-Kady. MRS Proceedings 637,
E2.6.1 (2000). (Microphotonics- Materials, Physics and Applications).
24)
R.
Biswas, Y.-P. Li, and
B.C. Pan, “Mechanisms of metastability in hydrogenated amorphous silicon”, Proceedings MRS 609, A3.5 (2000). Invited paper
25)
R. Biswas,
B.C. Pan and Y. Ye, “Network rebonding model for metastability in amorphous
silicon”, Proceedings Materials Research Society 664, A14.1 (2001).
26)
R. Biswas, E. Ozbay, B. Temelkuran, M. Bayindir, M.M. Sigalas, and K-M. Ho, “Antenna Applications of Photonic band
gap crystals”, Invited paper T23.24, Proceedings, URSI-2001 Symposium on
Electromagnetic Theory.
PATENTS
Awarded U.S. Patent 5,406,573. April 11, 1995,
“Periodic dielectric structure for production of photonic band gap and method
for fabricating the same” E. Ozbay, G. Tuttle, E. Michel, K.M. Ho, R. Biswas, C.T. Chan, and C.M. Soukoulis.
“Highly
directional Antennas using photonic band gap crystals” R. Biswas, E. Ozbay, B.
Temelkuran, M. Sigalas, G. Tuttle, K.M. Ho, No. AL445, ISURF#02561: Provisional
U.S. Patent filed 9/2000; full patent filed 9/26/2001.
“Method for fabricating photonic band gap
crystals using ceramic processing techniques” K. Constant, G. Subramania, R.
Biswas, K.-M. Ho, Filed U.S. Patent 12/2000. Under review. ISU Invention
No. AL-388 with ISURF/Ames Lab, 30-Aug-1995.
“Fabrication
of Photonic band Gap Materials using microtransfer molding techniques”
W.
Leung, G. Subramania, K. Constant, R. Biswas, K.-M. Ho, M. Sigalas, J. Huang,
K. Sutherland, I. El-Kady, H. Kang. Filed Provisional U. S. Patent
2/23/2001.
Record
of invention:
“Design
of Photonic band gap structures with higher gaps” R. Biswas, K.-M. Ho, filed
Nov-22-1996, No AL409, ISURF #02216I.
PRESS RELEASES
DOE
Pulse – December 13, 1999- “New crystals for the next millennium”
Inquiry
Magazine, Ames Laboratory, Fall 1999, “Photonic Frenzy”.
Photonics
Spectra, Emerging Technologies section, April 1995, “The Black hole of silicon”
Electronic
Materials Technology News, February 1995, “Photonic band gap crystals are
formed”.
Inquiry
Magazine, Ames Laboratory Spring 1994, “The Spectral Sieve”
Optics
and Photonic News, March 1994, “Using Microfabrication techniques on photonic
band gap structures”
DOE
Center of Excellence for the Synthesis and Processing of Advanced Materials,
Research Highlights 1998, “Light-induced metastability in hydrogenated
amorphous silicon”
Sandia
National Labs/ Research Highlights 1998.
Scientific
American Explorations with light. 9/21/98 www.sciam.com/explorations/1998/
REFERENCES
External
References: (Other external references available upon
request)
1. Dr. Donald R. Hamann
Head, Surface Physics Research
Department
Lucent Bell Laboratories
Murray Hill, NJ 07974
Tel: (908)582-4454; drh@bell-labs.com
2. Dr. G. Grest
Sandia National Laboratories, MS 1411
Albuquerque, NM 87185-1411
Tel: (505)844-3261; gsgrest@sandia.gov
3. Prof. S. Wagner
former Chair, Dept. of Electrical
Engineering
Princeton University, Princeton, NJ
08854
Tel: (609)258-4631;
wagner@princeton.edu
4. Dr. Howard Branz
Department Head, National Renewable
Energy Laboratory
1617 Cole Blvd, Golden CO
Tel: (303)384-6694; hbranz@nrel.gov
Internal
References:
1. Prof. C. M. Soukoulis
Department of Physics , Iowa State
University, Ames, IA 50011
Tel: (515)294-2816
2. Prof. K. M. Ho
Department of Physics, Iowa State
University, Ames, IA 50011
Tel: (515)294-1960
3. Prof. V. Dalal
Dept. of Electrical Engineering and
Computer Engineering & MRC
Iowa State University, Ames, IA 50011.
Tel: (515)294-1077
4. Prof. A. Chandra
Engel Professor of Mechanical
Engineering,
Iowa
State University, Ames, IA 50011.
Tel: (515)294-4834
GRADUATE STUDENTS SUPERVISED
1. G. Subramania, presently pursuing
Ph.D. in physics at ISU.
2. S. D. Cheng. Antennas on
photonic Band Gap Crystals M.S. EE 1995, Ph.D. (98) at ISU
3. I. Kwon, Ph.D. Physics ISU
(1993). Postdoctoral Research Associate, Los Alamos Natl. Lab
4. A.
Bouchard, B.S. Physics 1988. Her B.S. thesis was one of 6 finalists for
1988 Apker award of the American Physical Society. After Ph.D. in 1993 is
Research Scientist, Sandia Natl. Labs.
5. Grady Daub, summer 2000.
MEMBERSHIP
OF PH.D. STUDENT COMMITEES:
1. G. Subramania
(Physics)
2. S. D. Cheng
(EE) (Ph.D. 1998)
3. S. Gupta (EE)
(Ph. D. 1998)
4. J. Kavanaugh (EE)
5. I. El-Kady (Physics)
POSTDOCTORAL
AND VISITING SCIENTISTS SUPERVISED:
(all in
amorphous silicon & molecular dynamics area; were supported by external
grants)
1. Young-Hee Lee
(visiting scientist, S. Korea),
1989-1990
2. Qiming Li
(1993-1996)
3. Bicai Pan
(Univ of Science and Technology of China, Hefei, China);1997; 2000-present
4. Y.-P. Li
(Univ of Science and Technology of China, Hefei, China); 1997-98
5. Y. Ye (Wuhan
University); 2000
Undergraduate students supervised:
Yoke Yoon (1995-96), W. Hermanto (98-99), C. Boeckma (98-99), Hyung-Woong Lee
(1999),Z McDanel (2000-01).
TEACHING ACTIVITIES:
Teaching
assistant undergraduate physics courses
and grader graduate solid state physics 1978-1982 (Cornell University).
Lectured in
graduate solid state physics,
ISU (1 month), 1997 (PH512)
Lectured
Introductory Mechanics 2000 (PH221); (3 weeks)
Conducted
graduate seminar course, PH650B,
1993-1996, Dept. of Physics, ISU
Instructed thesis research work of students on graduate
committees.
CITATIONS
1993 64 citations including 3 self-citations
1994 97 citations including 22 self-citations