“Motion of Amoeba - the movement of the nucleus, contractile value and smaller organelles that move within cytoplasm are clearly visible”
Researrch Interests: Experimental
Laser
Physics: Nonlinear Optics; Medical Image Processing; Nano and Bio
Photonics; Optical Data Storage; Optical Power Limiting & Laser
Eye
Protection.
Education:
Andhra University, Waltair, India, B.Sc. (Honors) 1953
M.Sc., 1954; D.Sc., 1958
Professor Rao's Selected Publications in
Journals:
Phase contrast imaging using photo-thermally induced phase
transitions in liquid crystals, wiht Chandra S. Yelleswarapu,
Sri-Rajasekhar Kothapalli, Yvonne Vaillancourt, Francisco J. Aranda,
and B. Kimball, Applied Physics Letters (In press).
All-optical spatial filtering with power limiting materials,
with
Chandra S. Yelleswarapu, Pengfei Wu, Sri-Rajasekhar Kothapalli, B.
Kimball, S. Sivasankara Sai, R. Gowrishankar, and S. Sivaramakrishnan,
Optics Express, 14, 2006.
Nonlinear optical image processing with bacteriorhodopsin
polymer
films, with Chandra S. Yelleswarapu, Pengfei Wu, and Sri-Rajasekhar
Kothapalli, Molecular Crystals & Liquid Crystals, 446, 273,
2006.
.
Controllable snail-paced light in biological
bacteriorhodopsin, with Pengfei Wu. Physical Review Letters,
95 253601 (2005). (PDF)
Optical switch with sign control using a nonlinear waveguide
layer, with Pengfei Wu, Sriram G. Naraharisetty, B. R. Kimball, and
Chandra S. Yelleswarapu. Submitted to Applied Physics
Letters.
Spectral phase based medical image processing, with
Sri-Rajasekhar
Kothapalli,Chandra S. Yelleswarapu, Sriram G. Naraharisetty, and
Pengfei Wu. Academic Radiology, 12,
708, (2005). (pdf)
Nonlinear optical Fourier filtering technique for medical
image
processing, with Sri-Rajasekhar Kothapalli, Pengfei Wu, and Chandra S.
Yelleswarapu. Journal of Biomedical Optics, 10,
0440280, (2005). (pdf).
Medical image processing using t ransient Fourier holography
in
Bacteriorhodopsin films, with Sri-Rajasekhar Kothapalli, Pengfei Wu,
and Chandra S. Yelleswarapu. Applied Physics Letters, 85,
5836, (2004). (pdf)
Light scattering of periodic beta-aligned carbon nanotubes,
with Pengfei Wu, B. Kimball. Physics Review Letters
(2004). (pdf)
Biological nano-ceramic materials for holographic data
storage,
with Pengfei Wu, Murty Bhamidipati, and Melissa Coles Pages 506-510 Chemical
Physics Letters, 400, 506,
(2004). (pdf)
Self-diffraction in bacteriorhodopsin films for low power
optical
limiting, with D. Narayana Rao, Chandra S. Yelleswarapu, Sri-Rajasekhar
Kothapalli, B. Kimball. Optics Express, 11
, 2848 (2003). (pdf)
Optical power limiting with photoinduced anisotropy of
azobenzene
films, with Pengfei Wu, Reji Phillip, Ramesh B. Laghumavarapu,
Janakiram Devulapalli, Brain R. Kimball, Masato Nakashima, and Barry S.
DeCristofano. Applied Opics , 42(22)
, 4560, (2003). (pdf)
Photonic crystals based on periodic arrays of aligned carbon
nanotubes, with K. Kempa, B. R. Kimball, J. Rybczynski, Z. P. Huang, P.
F. Wu, D. Steeves, M. Sennett, M. Giersig, D. L. Carnahan, D. Z. Wang,
J. Y. Lao, W. Z. Li, and Z. F. Ren. Nano Letters ,
3(1) , 13-18, (2003). (pdf)
Enhancement of photoinduce anisotropy and all-optical
switching in
Bacteriorhodopsin films, with Pengfei Wu, B. R. Kimball, M. Nakashima
and B. S. DeCristofano. Applied Physics Letters ,
81 , 3888-3890 (2002). (pdf)
Non-volatile grating in an azobenzene polymer with optimized
molecular reorientation, with P. Wu, B.R. Kimball, M. Nakashima, B.S.
DeCristofano. Applied Physics Letters , 78
, 1189-91 (2001). (pdf)
Self-protective diffraction limiting using the technique of
bi-photon holography, with P. Wu, B.R. Kimball, M. Nakashima, B.S.
DeCristofano. Non-linear Optics , 27
, 287-295 (2001).
Processing of medical images using real-time optical fourier
processing, with Appaji Panchangam, K.V.L.N. Sastry, B.S. DeCristofano,
B.R. Kimball and M. Nakashima. Medical Physics ,
28 , 22-27 (2001).
Wavelength dependent studies of nonlinear absorption in
ZnmpTBP
uisng Z-scan technique, with N. Srinivas , B. R. Kimball, M. Nakashima
and B. S. DeCristofano. Journal of Porphoyrins and
Pthalocyanines , 5 , 549-554
(2001).
Spatial light modulator with output sign control and self
protective diffraction limiting, with P. Wu, B.R. Kimball, M. Nakashima
and B.S. DeCristofano. Journal of Optical Society of America
B 17 ,
1548-1553 (2000).
Spatial light modulation with an azobenzene doped polymer by
use
of biphotonic holography, with P. Wu, B.R. Kimball, M. Nakashima and
B.S. DeCristofano. Optics Letters , 24
, 841-843 (1999). (pdf)
Optical implementation of the wavelet tranform using a
Bacteriorhodopsin film as an optically addressed spatial light
modulator, with Joby Joseph, F.J. Aranda, B.S. DeCristofano, B.R.
Kimball and M. Nakashima. Applied Physics Letters ,
73 , 1484 (1999).
Dispersion of the nonlinear absorption of copper
phthalocyanine in
a silica xerogel matrix through the visible spectrum, with E. Blanco,
D. Narayana Rao, F.J. Aranda, S. Tripathy, J.A. Akkara, R. Litran and
M. Ramirez-del-Solar. Journal of Applied Physics ,
83(6) , 3441-3443 (1998).
A comparative study of C 60 pthalocyanine and porphyrin for
optical limiting over the visible region with D.Narayana Rao, E. Blanco
F. J. Aranda. Journalof Scientific and Industrial Research (
India ) , 57
, 664 (1998).
Dispersion studies of non-linear absorption in C 60 using
Z-Scan with D. Narayana Rao, J. A. Akkara and B.S. DeCristofano. Chemical
Physics Letters , 297 , 491
(1998).
Optical computing and information processing with a protein
complex, with Joby Joseph, F.J. Aranda and B.S. DeCristofano. Optical
Memory and Neural Networks , 6 ,
275 (1997).
Ultra fast relaxation times of Metalloporphyrins by time
resolved
degenerate four wave mixing with incoherent light, with D. Narayana
Rao, S. V. Rao, F. J. Aranda, M. Nakashima and J. A. Akkara. Journal
of Optical Society of America B
14 ,
2710-2715 (1997).
All-optical logic gates with Bacteriorhodopsin films, with
D.
Narayana Rao, F.J.Aranda, Z. Chen, J.A. Akkara, D.L. Kaplan, M.
Nakashima. Optics Communication, 127
, 193
(1996). *Photonic applications of Bacteriorhodopsin, with F. J. Aranda,
Z. Chen, J. A. Akkara, D. L. Kaplan, M. Nakashima. Journal
of Nonlinear Optical Physics and Materials , 5
, 331 (1996).
Third order nonlinear optical susceptibility of films of
polydiacetylene-containing polyamides and polyesters, with S. Fomine,
E. Adam, and T. Ogawa. Polymer Bulletin , 34
, 169 (1995).
Nonlinear optical interactions in Bacteriorhodopsin using
Z-scan,
with F. J. Aranda, C. L. Wong, P. Zhou, Z. Chen, J. A. Akkara, D. L.
Kaplan and J. F. Roach. Optical Review , 2
(1995).
All-optical light modulation in Bacteriorhodopsin films,
with F.
J. Aranda, R. Garimella, N. F. McCarthy, D. Narayana Rao, Z. Chen, J.
A. Akkara, D. L. Kaplan and J. F. Roach. Applied Physics
Letters , 67 , 599(1995).
Biomimetic membrane and interface templates for enzyme-based
polymerization reactions, with J. A. Akkara, M. Ayyagari, F. Bruno, L.
Samuelson, V.T. John, C. Karayigitoglu, S. Tripathy, K.A. Marx and D.L.
Kaplan. Biomimetics , 2 ,
331 (1994).
Third-order nonlinear optical interactions in
Tetrabenzporphyrins, with F. J. Aranda, D. E. Remy and F. J. Roach. International
Journal of Nonlinear Optical Physics , 3 ,
511 (1994).
Third-order nonlinear optical interactions of C 60 and C 70
, with F.J. Aranda, J. F. Roach and P. Tayebati. Journal of
Applied Physics , 73 , 7949
(1993).
Mirrorless all-optical bistability in Bacteriorhodopsin,
with F.
J. Aranda, B. J. Wiley, J. A. Akkara, D. L. Kaplan and J. F. Roach. Applied
Physics Letters , 63 , 1489
(1993).
Third-order optical nonlinearities of Benzoporphyrins and a
Platinum Poly-yne, with S. Guha, K. Kang, P. Porter, F. J. Aranda, D.
E. Remy and J. F. Roach. Optics Letters , 17
, 264 (1992). (pdf)
Third-order nonlinear optical interactions of some
Benzoporphyrins, with F. J. Aranda, D. E. Remy, and J. F. Roach. Applied
Physics Letters , 58 , 1241
(1991).
Inverse-scattering transform of stimulated Raman and
Brillouin
scattering in the quasi-steady state regime, with D. N. Ghosh Roy. Physical
Review Letters , 66 , 2308
(1991).
Self-focusing in polymers, with James Bickford, A. Sheri and
Muthu Kumar. Journal of Polymer Science , Part
C , Polymer Letters , 28
, 247 (1990).
Optical pulse narrowing by backward transient stimulated
Brillouin scattering, with D. N. Ghosh Roy. Journal of
Applied Physics , 59 , 332
(1986). *Brillouin scattering in thin film waveguides with S. Janaki,
P. Rao, and N. Swamy. Applied Physics Letters , 44
, 1025 (1984).
Optical pulse compression in a cholesteric liquid crystal
with D. N. Ghosh Roy and Harold Bronk. Applied Physics
Letters , 39 , 474 (1981).
Pretransitional behavior of self-focusing in nematic liquid
crystals, with S. Jayaraman. Physics Review A
10 , 2457
(1974). *Stimulated Raman scattering in a liquid crystal, with D.K.
Agraljal. Physics Letters , 37A ,
383 (1971).
Stimulated Brillouin scattering in a liquid crystal. Physics
Letters , 32A , 533 (1970).
Brillouin scattering of light in liquid crystal, with G.
Durand. Physics Letters , 27A ,
455 (1968).
Laser induced resistivity changes in Silicon. Journal
of Applied Physics , 39 ,
4853 (1968).
Quadrupole interactions in Chrysoberyl, with L. Rao. Physics
Review , 160 , 274 (1967).
Calculations of electric field gradients and g-factors for a
single crystal of paramagnetic CUC12 2H20, with A.N. Murty. Physics
Review , 132 , 961 (1963).
Electron spin resonance of an irradiated single crystal of
urea oxalate, with W. Gordy . Journal of Chemical Physics ,
35 , 362 (1961).
Molecular quadrupole moment of Nitric oxide. Nature
, 186 , 881
(1960).
1) Patent Number – 5,757,525 dated May 26, 1998,
All Optical Devices (includes switches, modulators and logic gates).
2) Patent Number – 5,854,710 dated Dec. 29, 1998, Optical
Fourier
Processing (includes edge enhancement, band pass filtering, noise
removal and pattern recognition).
3) Optical Fourier Systems and Methods for Medical Image Processing,
filed October 11, 2002.
4) Systems and Methods for Limiting Power using Photo-induced
Anisotropy, filed June 30, 2003.
5) Phase based digital image processing techniques for computer aided
diagnosis, filed February, 2005.
PROFESSIONAL POSITIONS
(Postdoctoral):
Lecturer in Physics, Andhra University, 1957-1959;
1961-1963.
Research Associate, Physics Department, Duke University,
Durham , North Carolina, 1959-1961.
Senior Scientist, Solid State Physics Laboratory, Delhi,
India 1963-1966; Leader of Magnetic Resonanance Group.
Research Physicist, Maser Optics, Inc. July 1966-April,1968.
Manager, Research Division, Spacerays, Inc., April
1968-August 1968.
Associate Professor, University of Massachusets at Boston,
September 1968-1975.
Professor of Physics, University of Massachusetts at Boston,
1975 - to the present
Chairman, Physics Department 1978-1980; Graduate Program
Director, Applied
Physics Graduate Program 1986 - 1988, 1992 – 1995,
1997- to the present
Other Positions Or Fellowships
(Held concurrent with above positions):
Research Fellow, Division of Engineering and Applied
Physics, Harvard University 1967-1969.
Visiting Research Professor of Physics, I.I.T., Madras 1983.
Adjunct Professor of Physics, University of Masschusetts
Amherst 1991 -
Adjunct Professor of Physics, University of Massachusetts
Lowell 1994 -
