Results 121 to 130 of about 35,818 (242)

Spectroscopic Ellipsometry of Conducting Anisotropic Pedot thin Films

Macromolecular Rapid Communications, EarlyView.
We measure the optical response of poly[3,4‐ethylenedioxythiophene] thin films through the combination of polarized photon spectroscopies (variable‐angle ellipsometry, UV–mid‐IR reflectance and transmittance) and wide‐angle X‐ray scattering, revealing anisotropic optical response and conductivity and enabling structural modelling of chain and π‐system ...
Francesco Bisio, Katia Sparnacci, Angelo Angelini, Martina Martusciello, Daniela Di Fonzo, Davide Comoretto, Maddalena Patrini   +6 more
wiley   +1 more source

High-power, ultra-low-noise cascaded diamond Raman lasers with spectrum compression

High Power Laser Science and Engineering
Stimulated Raman scattering is a third-order nonlinear optical effect that is not only effective for wavelength converting laser output, but also for single longitudinal-mode output due to the absence of spatial hole burning. Diamond is a prominent Raman-
Hui Chen, Zhongan Zhao, Wenqiang Fan, Yunpeng Cai, Boyuan Zhang, Jie Ding, Yaoyao Qi, Bingzheng Yan, Yulei Wang, Zhiwei Lu, Zhenxu Bai   +10 more
doaj   +1 more source

Impact of monomer contamination of isopropanol during post‐rinsing on the accuracy of dental models fabricated by vat photopolymerization

Journal of Prosthodontics, EarlyView.
Abstract Purpose The aim of this study was to investigate the impact of an increasing level of monomer contamination of isopropanol (isopropyl alcohol [IPA]) during post‐rinsing on the dimensional stability of test samples produced by vat photopolymerization.
Florian Flierl, Benedikt C. Spies, Severin Rothlauf, Kirstin Vach, Ralf J. Kohal, Jörg Lüchtenborg   +5 more
wiley   +1 more source

Precisely Tunable 780 nm External Cavity Diode Laser

Photonics
State-of-the-art research on narrow-linewidth external cavity semiconductor lasers has provided limited discussion on the capability of continuous wavelength tuning.
Baoni Han, Yuanlin Shi, Xu Tang, Jing Li, Chenggang Guan, Junzhu Ye, Rongxu Shen   +6 more
doaj   +1 more source

Postexercise Lactate Clearance, T2 Relaxation, and J‐Modulation in Human Skeletal Muscle Measured With Double‐Quantum Filtered 1H MRS at 7 T

Magnetic Resonance in Medicine, Volume 95, Issue 6, Page 3065-3076, June 2026.
ABSTRACT Purpose 1H MRS lactate measurements are potentially valuable for studying energy metabolism in working skeletal muscle, but some technical obstacles need to be overcome. Spectral filtering to isolate the lactate signal from overlapping lipid resonances shows promise.
Kostiantyn Repnin, Vasco Rafael Rocha dos Santos, Veronika Cap, Roberta Frass‐Kriegl, Siegfried Trattnig, Graham J. Kemp, Martin Meyerspeer   +6 more
wiley   +1 more source

High-Repetition-Rate 2.3–2.7 µm Acousto-Optically Tuned Narrow-Line Laser System Comprising Two Master Oscillators and Power Amplifiers Based on Polycrystalline Cr²⁺:ZnSe with the 2.1 µm Ho³⁺:YAG Pulsed Pumping

Photonics
High-average-power narrow-linewidth tunable solid-state lasers in the wavelength region between 2 and 3 μm are attractive light sources for many applications.
Oleg Antipov, Ilya Eranov, Stanislav Balabanov, Anton Dobryinin, Yuri Getmanovskiy, Valeriy Sharkov, Nikolay Yudin   +6 more
doaj   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, Volume 36, Issue 27, 2 April 2026.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

All Polarization Maintaining Brillouin Erbium-Doped Fiber Laser With Sub-kHz Linewidth Using Saturated Absorber and Self-Injection Feedback

IEEE Photonics Journal
A narrow-linewidth all-polarization-maintaining (PM) Brillouin erbium-doped fiber laser (BEFL) is proposed and demonstrated experimentally, which employs erbium-doped fiber (EDF) acting as both the linear gain and the Brillouin gain medium.
Junsen Yang, Zhengkang Wang, Jianming Shang, Shiyou Xiao, Zhixue Li, Bin Luo, Tianwei Jiang, Song Yu   +7 more
doaj   +1 more source

Ion‑Mediated Structural Engineering of Hydrogel Interfaces for Tunable Mechanical and Analyte Diffusion Properties in Electrochemical Biosensors

Advanced Materials, Volume 38, Issue 19, 1 April 2026.
An ion‐mediated structural engineering strategy enables versatile modulation of PVA–Alginate hydrogel microstructure. We systematically examine how different ion combinations affect hydrogel mechanical properties and analyte diffusivity. Applying this novel strategy to hydrogel as the outer membrane in an electrochemical glucose biosensor allows ...
Dongwook Lee, Soo A Kim, Beom‐Jun Shim, Yurim Lee, Tae Young Kim, Sunghyun Park, Yeontaek Lee, Hyeong Gyu Choi, Kayoung Son, Su Bin Han, Keun‐Young Yook, Seo Jung Kim, Won‐Yong Lee, Jungmok Seo, Jayoung Kim   +14 more
wiley   +1 more source

Nonequilibrium Photothermal Reactions Under Pulsed Laser Excitation: Mechanisms, Dynamics, and Applications

ChemCatChem, Volume 18, Issue 7, 14 April 2026.
ABSTRACT Pulsed laser excitation offers a compelling approach for accessing nonequilibrium conditions in catalysis by delivering energy to surfaces in a highly localized and time‐controlled manner. In contrast to continuous‐wave irradiation, pulsed lasers concentrate energy into extremely short bursts—ranging from femtoseconds to nanoseconds—which can ...
Huieun Shim, Sy Khiem Nguyen, Hyeonji Lee, Jaehee Shin, Ilsun Yoon, Youngku Sohn   +5 more
wiley   +1 more source