Results 61 to 70 of about 7,836,199 (284)

Dispersion-Engineered Step-Index Tellurite Fibers for Mid-Infrared Coherent Supercontinuum Generation from 1.5 to 4.5 μm with Sub-Nanojoule Femtosecond Pump Pulses

Applied Sciences, 2018
Mid-infrared supercontinuum generation from 1.5 to 4.5 µm with sub-nanojoule femtosecond pump pulses is demonstrated by using a short segment of dispersion-engineered step-index tellurite fiber with very low OH content.
Paul Froidevaux, Arnaud Lemière, Bertrand Kibler, Frédéric Désévédavy, Pierre Mathey, Grégory Gadret, Jean-Charles Jules, Kenshiro Nagasaka, Takenobu Suzuki, Yasutake Ohishi, Frédéric Smektala   +10 more
doaj   +1 more source

Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh, Bharti Garg, Maximilian Black, Masoud Taleb, Nahid Talebi   +4 more
wiley   +1 more source

Tunable Mid-Infrared Light Source Based on Difference Frequency Generation in Periodically Poled Lithium Niobate [PDF]

, 2007
In this work, tunable Mid-Infrared (IR) light sources based on quasi-phase matched (QPM) difference frequency generation (DFG) by periodically poled lithium niobate (PPLN) crystals are studied.
Han, Ling
core  

Mid-infrared dual-comb spectroscopy with an optical parametric oscillator [PDF]

, 2013
We present the first implementation of mid-infrared dual-comb spectroscopy with an optical parametric oscillator. Methane absorption spectroscopy was demonstrated with a resolution of 0.2 cm(-1) (5 GHz) at an acquisition time of similar to 10.4 ms over a
Gardiner, Tom, Reid, Derryck Telford; id_orcid, Zhang, Zhaowei   +2 more
core   +1 more source

Engineered Nanoplatforms Targeting Activated Hepatic Stellate Cells for Liver Fibrosis Therapy via TGF‐β Axis Inhibition and Ferroptosis Induction

Advanced Healthcare Materials, EarlyView.
FeS‐VA@lanifibranor (FVL), an activated hepatic stellate cell (aHSC)‐targeted nanoplatform comprising vitamin A‐functionalized two‐dimensional iron sulfide nanosheets and lanifibranor, is engineered for precision therapy of liver fibrosis. FVL suppresses the TGF‐β signaling pathway by inhibiting SMAD2/3 phosphorylation and induces ferroptosis in aHSCs,
Yinuo Yang, Mengyao Mu, Ke Ren, Hui Liu, Pengju Ma, Yingqi Wang, Mengmeng Zhang, Xueli Xu, Wenzhe Li, Wenshuang Gao, Xiao Sun, Qiang Zhu   +11 more
wiley   +1 more source

Barium Chalcogenide Crystals: A Review

Photonics
In recent decades, new nonlinear optical materials have been actively developed to create coherent tunable light sources in the mid-infrared (mid-IR) part of the spectrum used in a variety of scientific fields.
Nadezhda Kostyukova, Evgenii Erushin, Andrey Boyko, Galina Shevyrdyaeva, Dmitry Badikov   +4 more
doaj   +1 more source

Metasurface-engineered thermal emitters enabled chip-scale mid-infrared spectroscopic sensing

PhotoniX
Miniaturized spectroscopy techniques show great potentials in on-site applications, with most progress focused on manipulating the spectral responses of either dispersion elements or detectors.
Qin Chen, Hu Nie, Qin-Ke Liu, Ning Tan, Ziwang Tuo, Jiahao Yan, Long Wen   +6 more
semanticscholar   +1 more source

PLL‐g‐HPA Hydrogel Microneedles Loaded With Rhoifolin Target Macrophages to Alleviate Fibroblast Senescence for Diabetic Wound Healing

Advanced Healthcare Materials, EarlyView.
Diabetic wound healing is hindered by a pathological crosstalk wherein elevated IL‐11 induces M1 macrophage polarization, leading to IL‐1β/IL‐6 release and subsequent fibroblast senescence via RAS/p38MAPK/p53/E2F1 signaling. Here, we develop a Gel@M‐Rho microneedle patch that delivers rhoifolin‐loaded, macrophage membrane‐coated nanoparticles to target
Jiewen Liao, Lin Gan, Li Lu, Lizhi Ouyang, Yuan Xiong, Fawwaz Al‐Smadi, Guandong Dai, Mohammad‐Ali Shahbazi, Bobin Mi, Mengfei Liu, Guohui Liu   +10 more
wiley   +1 more source

Double-periodic pulsations simultaneously detected in mid-infrared and hard X-ray emissions during an X1.5 flare

Astronomy & Astrophysics
Context. Quasi-periodic pulsations (QPPs) have been observed in a broad electromagnetic spectrum, encompassing radio, ultraviolet, white light, X-rays, and γ-rays. Yet, flare-associated QPPs remain rarely detected in mid-infrared emission. Aims.
Li Dong, Ye Yuyang, Bai Xianyong, Yang Xu   +3 more
doaj   +1 more source

Mechanically flexible mid-wave infrared imagers using black phosphorus ink films

Nature Communications
The mid-wave infrared (MWIR) spectral range (λ = 3–8 μm) enables important sensing and imaging applications, including non-invasive bioimaging, night vision, and autonomous navigation.
T. Wijaya, Naoki Higashitarumizu, Shifan Wang, S. Tajima, Hyong Min Kim, Shu Wang, Dehui Zhang, J. Bullock, T. Yokota, T. Someya, Ali Javey   +10 more
semanticscholar   +1 more source