Results 11 to 20 of about 1,272,790 (293)

Thomas Young's Investigations in Gradient-Index Optics [PDF]

Optometry and Vision Science, 2011
Peer ...
Atchison, David, Charman, W.
openaire   +6 more sources

Optical investigation of GaNAs [PDF]

AIP Conference Proceedings, 1999
A systematic study of the energy and time-resolved photoluminescence of GaInP/GaNxAs1−x double heterostructures has been performed for 0⩽x⩽1.3%. A large temperature-dependent optical-bowing coefficient (about 20–25 eV) is observed and the bandgap variation with temperature is found to depend on the nitrogen content.
Keyes, B. M., Geisz, J. F., Dippo, P. C., Reedy, R., Kramer, C., Friedman, D. J., Kurtz, S. R., Olson, J. M.   +7 more
openaire   +1 more source

Evaluation of Choroidal Thickness Using Optical Coherent Tomography: A Review

Frontiers in Medicine, 2021
The choroid is the main source of blood and nourishment supply to the eye. The dysfunction of the choroid has been implicated in various retinal and choroidal diseases.
Rui Xie, Rui Xie, Bingjie Qiu, Bingjie Qiu, Jay Chhablani, Xinyuan Zhang, Xinyuan Zhang   +6 more
doaj   +1 more source

Mechanical properties of basalt fiber/ epoxy resin composites [PDF]

INCAS Bulletin
This paper presents a study regarding the obtaining, characterizing and mechanically testing a new laminar composite material, consisting of epoxy resin reinforced with basalt plain fabric. The composites were obtained by manual lay-up, cross-link stage
Cristina - Elisabeta PELIN, George PELIN
doaj   +1 more source

Evaluation techniques for optical analysis of hybrid rocket propulsion

Journal of Fluid Science and Technology, 2016
This article summarizes recent results of data evaluation techniques obtained with optical investigations on the combustion behavior of hybrid rocket fuels. Tests are performed in a 2D slab burner configuration with windows on two sides.
Anna PETRAROLO, Mario KOBALD
doaj   +1 more source

Valence band excitations in V_2O_5 [PDF]

, 1999
We present a joint theoretical and experimental investigation of the electronic and optical properties of vanadium pentoxide. Electron energy-loss spectroscopy in transmission was employed to measure the momentum-dependent loss function. This in turn was
A. Chakrabarti, A. N. Yaresko, A.Z. Moshfegh, E. Goering, E.E. Chain, E.G. Maksimov, G. Micocci, J. Fink, J. Fink, J. Haber, Ji. Yamaki, M. Klemm, M. Knupfer, M. S. Golden, O. Šipr, O.K. Andersen, O.K. Andersen, P. Hohenberg, P.E. Blöchl, R. Enjalbert, R. Kubo, S. Atzkern, S. Horn, S. V. Borisenko, S.F. Cogan, S.Yu. Ezhov, U. von Barth, V. Eyert, V. N. Antonov, V.N. Antonov, W. Kohn, W.E. Pickett   +31 more
core   +7 more sources

Numerical Investigation of Optical Burst Switching

Communications, 2008
The simulation analysis of aphysical layer of the "all optical burst switching" using aVPI Photonics™ simulation program is presented in this article. The optical burst networks adopt dedicated control channel to transmit headers of burst, at the same ...
Milan Dado, Stanislav Krajci, Jozef Dubovan, Dusan Sabol   +3 more
doaj   +1 more source

Strong nonlinear optical response of graphene flakes measured by four-wave mixing [PDF]

, 2009
We present the first experimental investigation of nonlinear optical properties of graphene flakes. We find that at near infrared frequencies a graphene monolayer exhibits a remarkably high third-order optical nonlinearity which is practically ...
A. K. Savchenko, E. Hendry, J. Moger, P. J. Hale, R. W. Boyd, S. A. Mikhailov   +5 more
core   +2 more sources

Structural investigation of semicrystalline polymers

Polymer Testing, 2021
This work demonstrates the most widely used characterization methods and techniques of the supermolecular and lamellar structure of semicrystalline polymers.
J. Molnár, Z. Zuba, Ö. Sepsi, F. Ujhelyi, G. Erdei, S. Lenk, A. Menyhárd   +6 more
doaj   +1 more source

Optical Gain in Commercial Laser Diodes

Photonics, 2021
Optical gain and optical losses are separately measured in commercial laser diodes by simple analysis of spectral and electrical characteristics, and with no special specimen preparation or handling.
Massimo Vanzi
doaj   +1 more source