Results 41 to 50 of about 2,929 (285)
Optical limiting via spontaneously generated coherence
Scientific Reports, 2023 We investigate the reverse saturable absorption (RSA) and optical limiting (OL) in a three-level V-type quantum system considering the effect of the spontaneously generated coherence (SGC). It is shown that in the absence of the SGC effect, the saturable
Abbas Silatan +2 more
doaj +1 more source
Nanomaterials, 2021 InP@ZnS core-shell colloidal quantum dots (CQDs) were synthesized and characterized using the z-scan technique. The nonlinear refraction and nonlinear absorption coefficients (γ = −2 × 10−12 cm2 W−1, β = 4 × 10−8 cm W−1) of these CQDs were determined ...
Rashid A. Ganeev +5 more
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Frontiers in Physics, 2020 The non-linear absorption properties of reduced graphene-oxide (RGO) have been studied extensively but the optical limiting (OL) performance of RGO was always confined to visible light. In this study, by anchoring SnSe nanosheets onto the surface of RGO,
Xiaoqin Li +6 more
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Nonlinear optical trapping effect with reverse saturable absorption
, 2023 Nonlinear responses of nanoparticles induce enlightening phenomena in optical tweezers. With the gradual increase in optical intensity, effects from saturable absorption (SA) and reverse SA (RSA) arise in sequence and thereby modulate the nonlinear ...
Zhang, Shuoshuo (author) +6 more
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Nanomaterials, 2022 The nonlinear optical properties of zinc oxide nanoparticles (ZnONPs) in distilled water were measured using a femtosecond laser and the Z-scan technique.
Tarek Mohamed +5 more
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, 2011 The third order nonlinear optical properties of two different sized carboxylate-modified microspheres are investigated at different pump powers. The nonlinear absorption (NLA) is measured at 532 nm using 10 Hz, 7 ns pulses from the second harmonic ...
V. P. N. NAMPOORI +2 more
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Transition from saturable absorption to reverse saturable absorption of carmoisine dye under low-powered continuous wave laser excitation [PDF]
, 2019 Unique nonlinear optics (NLO) properties i.e. intensity-dependent nonlinear absorption and refraction of carmoisine (food dye) is studied using a single beam z-scan technique.
Krishnan, Ganesan +10 more
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The nonlinear optical absorption and optical limiting properties of noble metal-doped ZnO films
AIP Advances, 2021 Herein, pure ZnO, Ag-doped ZnO, and Cu-doped ZnO films with excellent ultrafast (femtosecond) nonlinear absorption/limiting behavior were deposited on quartz substrates by magnetron sputtering.
Peiran Tian
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Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
, 2014 Restricted Access.Solid films of cube-like polyaniline synthesized by inverse microemulsion polymerization method have been fabricated in a transparent PMMA host by an in situ free radical polymerization technique, and are characterized by spectroscopic ...
Philip, Reji +3 more
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