Results 31 to 40 of about 32,897 (303)
Ultrafast infrared spectroscopy of bacteriorhodopsin
Biophysical Journal, 1991 Picosecond infrared spectroscopy is developed and used for the first time to study the dynamics of photoexcited bacteriorhodopsin (BR). Both spectral and time-resolved data are obtained. The results open an entirely new approach to investigations of the BR photocycle.
Diller, R. +3 more
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Scientific Reports, 2017 In this study, label-free fluorescence spectroscopy was used for the first time to determine spectral profiles of tryptophan, reduced nicotinamide adenine dinucleotide (NADH), and flavin denine dinucleotide (FAD) in fresh brain samples of a mouse model ...
Lingyan Shi +5 more
doaj +1 more source
Combined spatial frequency spectroscopy analysis with visible resonance Raman for optical biopsy of human brain metastases of lung cancers [PDF]
Journal of Innovative Optical Health Sciences, 2019 The purpose of this study is to examine optical spatial frequency spectroscopy analysis (SFSA) combined with visible resonance Raman (VRR) spectroscopic method, for the first time, to discriminate human brain metastases of lung cancers adenocarcinoma ...
Yan Zhou +10 more
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Ultrafast infrared spectroscopy in photosynthesis
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2015 In recent years visible pump/mid-infrared (IR) probe spectroscopy has established itself as a key technology to unravel structure-function relationships underlying the photo-dynamics of complex molecular systems. In this contribution we review the most important applications of mid-infrared absorption difference spectroscopy with sub-picosecond time ...
Di Donato Mariangela, Groot Marie Louise
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Three-dimensional electronic spectroscopy of excitons in asymmetric double quantum wells
New Journal of Physics, 2013 We utilize a three-dimensional (3D) visible spectroscopy to reveal and explore coherent coupling between excitons localized to GaAs quantum wells separated by barriers 4 and 6 nm wide. The coupled excitons were energetically separated by 43 meV, close to
C R Hall +3 more
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Cavity-enhanced Ultrafast Transient Absorption Spectroscopy [PDF]
, 2014 We introduce cavity enhanced ultrafast transient absorption spectroscopy, which employs frequency combs and high-finesse optical cavities. % The schematic of apparatus is shown in Figure 1.
Chen, Yuning
core +1 more source
Entanglement, number fluctuations and optimized interferometric phase measurement
New Journal of Physics, 2012 We derive a phase-entanglement criterion for two bosonic modes that is immune to number fluctuations, using the generalized Moore–Penrose inverse to normalize the phase-quadrature operator.
Q Y He +3 more
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Time-resolved ARPES at LACUS: Band Structure and Ultrafast Electron Dynamics of Solids
CHIMIA, 2017 The manipulation of the electronic properties of solids by light is an exciting goal, which requires knowledge of the electronic structure with energy, momentum and temporal resolution.
Alberto Crepaldi +10 more
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Ultrafast Coherent Raman Spectroscopy [PDF]
, 1987 During the past decade, time resolved coherent methods have attracted much interest for the study of fast dynamic processes. In particular, time resolved coherent Raman scattering allowed to measure — in the time domain — rapid dephasing processes of molecular vibrations in liquids and elucidated various line-broadening mechanisms /1-4/.
Zinth, Wolfgang, Kaiser, Wolfgang
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Ultrafast excited-state dynamics of SnSe2–SnSe composite thin film
AIP Advances, 2021 We report the ultrafast carrier dynamics of an SnSe2–SnSe composite thin film (∼150 nm thick) deposited using thermal evaporation of in-house synthesized SnSe2 powder. Raman and UV–visible spectroscopy supports the optical properties (direct and indirect
Manoj Kumar +4 more
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