Zobrazeno 1 - 10
of 72
pro vyhledávání: '"P. M. RENTZEPIS"'
Enhancing the upconversion efficiency of NaYF4:Yb,Er microparticles for infrared vision applications
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-8 (2023)
Abstract In this study, (NaYF4:Yb,Er) microparticles dispersed in water and ethanol, were used to generate 540 nm visible light from 980 nm infrared light by means of a nonlinear stepwise two-photon process. IR-reflecting mirrors placed on four sides
Externí odkaz:
https://doaj.org/article/d75d22800d3049dc9d426f3118710891
Autor:
Dinesh Dhankhar, Peter M. Rentzepis
Publikováno v:
IEEE Access, Vol 11, Pp 41964-41969 (2023)
This article presents the design, construction, and results obtained by our new compact, small and inexpensive deep UV microscope. Several methods are described for recording microscopic images of various types in the deep ultraviolet spectral regime
Externí odkaz:
https://doaj.org/article/d2fe7987053d4fbead98f5288606c2ed
Publikováno v:
Molecules, Vol 28, Iss 15, p 5829 (2023)
Rods and cones are the photoreceptor cells containing the visual pigment proteins that initiate visual phototransduction following the absorption of a photon. Photon absorption induces the photochemical transformation of a visual pigment, which resul
Externí odkaz:
https://doaj.org/article/ca7024089faf4699b5f173545f6db9db
Publikováno v:
IEEE Access, Vol 8, Pp 73890-73897 (2020)
In this study, rare earth doped infrared (IR) to visible, up-converting particles along-with efficient ultraviolet (UV) to visible fluorescent molecules were imbedded in proteins and were used as a mean for increasing the human vision range to infrar
Externí odkaz:
https://doaj.org/article/da1a60732466457382253ac79798f2a2
Autor:
Runze Li, Dinesh Dhankhar, Jie Chen, Arjun Krishnamoorthi, Thomas C. Cesario, Peter M. Rentzepis
Publikováno v:
IEEE Access, Vol 7, Pp 23549-23559 (2019)
Raman spectroscopy has been used to identify bacterial strains, bacterial components, such as protein and DNA bases, and the ratio of live to dead bacteria before and after exposure to ultraviolet (UV) radiation. New vibrational bands and changes in
Externí odkaz:
https://doaj.org/article/43b6c940ca6645018f6e4cb46af86508
Publikováno v:
Structural Dynamics, Vol 5, Iss 4, Pp 044501-044501-10 (2018)
Ultrafast lattice deformation of tens to hundreds of nanometer thick metallic crystals, after femtosecond laser excitation, was measured directly using 8.04 keV subpicosecond x-ray and 59 keV femtosecond electron pulses. Coherent phonons were generat
Externí odkaz:
https://doaj.org/article/3e94ea335a04454cbf35a5b7d51bb438
Publikováno v:
Advances in X-ray Analysis. 38:21-33
We report the development of a novel, pulsed x-ray diffraction system with picosecond time resolution. The system has been used to study the heat transport in gold, platinum and silicon crystals heated by 10 ps, 193 nm laser pulses. Further developme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1630243666d9771082abac560b63cd5d
https://doi.org/10.1154/s0376030800017614
https://doi.org/10.1154/s0376030800017614
Publikováno v:
Journal of X-Ray Science and Technology. 4:44-56
A new technique for the generation of picosecond x-ray pulses is presented. Picosecond laser pulses are used to generate ultrashort electron pulses in a conventional x-ray diode in which the cathode is replaced by a photocathode. In the experiments p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c2253a0fd1f25c25468dd9762fb0328
https://doi.org/10.3233/xst-1993-4105
https://doi.org/10.3233/xst-1993-4105
Autor:
Sadik Esener, P. M. Rentzepis
Publikováno v:
LEOS 1991 Summer Topical Meetings on Spaceborne Photonics: Aerospace Applications of Lasers and Electro-Optics, Optical Millimeter-Wave Interactions: Measurements, Generation, Transmission and Control.
An optical volume memory based on two photon effect providing high storage density and memory bandwidth is described. Preliminary experimental data is presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33a77390d34e41762a60e92ab5251f8e
https://doi.org/10.1109/leosst.1991.665265
https://doi.org/10.1109/leosst.1991.665265
Publikováno v:
Multiphoton and Light Driven Multielectron Processes in Organics: New Phenomena, Materials and Applications ISBN: 9780792362722
Many commercial and military applications generate enormous amounts of data which must be stored and be available for rapid parallel access and very fast processing. The major component which is expected to modulate the practical limits of high speed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f33f1c2f3903d6b0a1133cac354269c3
https://doi.org/10.1007/978-94-011-4056-0_1
https://doi.org/10.1007/978-94-011-4056-0_1
