Results 91 to 100 of about 3,950 (203)

Mid‐Infrared Integrated Photonics: Material Platforms and Emerging Applications

Laser &Photonics Reviews, Volume 20, Issue 6, 18 March 2026.
Mid‐infrared (MIR) integrated photonics enables advanced chemical and biological sensing through the unique absorption features of molecules in the 2–20 µm range. This review highlights recent material advances such as chalcogenide glasses, silicon, and graphene and explores MIR applications in environmental monitoring, medical diagnostics ...
Muhammad Ali Butt, Daniel Pastor Abellán, Ryszard Piramidowicz   +2 more
wiley   +1 more source

NIR‐Triggered Upconversion‐Perovskite Heterostructures for Non‐Genetic, Implant‐Free Optoelectronic Neuromodulation

Advanced Science, Volume 13, Issue 8, 9 February 2026.
The Single‐Nanostructured Optoelectronic Vehicle for neuromodulation Activation (SNOVA) establishes a paradigm for non‐genetic, implant‐free neuromodulation. By integrating NIR‐excitable UCNPs with broadband‐absorbing perovskite QDs, SNOVA efficiently converts deeply penetrating light into localized electric fields that modulate neuronal ion dynamics ...
Luyue Jiang, Chenguang Ma, Yiping Zhao, Jiazhi Li, Gen Li, Shuang Jin, Haoyang Su, Ye Tian, Yingkang Yang, Yunfu Luo, Lei Huang, Peijie Chen, Yiming Gao, Yi Wei, Yike Xiang, Lunming Qin, Kaihuan Zhang, Yifei Ye, Pengyi Tang, Liuyang Sun   +19 more
wiley   +1 more source

Spatially Encoded Polaritonic Ultra‐Strong Coupling in Gradient Metasurfaces with Epsilon‐Near‐Zero Modes

Advanced Materials, Volume 38, Issue 1, 2 January 2026.
Dielectric dual gradient metasurfaces supporting quasi‐bound‐states‐in‐the‐continuum are leveraged to spatially encode both the spectral and coupling parameter space and demonstrate ultra‐strong coupling to an epsilon‐near‐zero mode in an ultra‐thin SiO2 layer.The platform achieves exceptional mode overlap, reaching a normalized coupling strength of η =
Enrico Baù, Andreas Aigner, Jonas Biechteler, Connor Heimig, Thomas Weber, Thorsten Gölz, Stefan A. Maier, Andreas Tittl   +7 more
wiley   +1 more source

Ultrabroad and Wide‐Angle High‐Temperature‐Stability Infrared Metamaterial Absorber Based on All‐Dielectric Silicon Nitride (Si3N4)

Advanced Photonics Research, Volume 7, Issue 1, January 2026.
This work presents a novel all‐dielectric metamaterial absorber (MMA) consisting of vertically tapered silicon nitride (Si3N4) rods on a tungsten (W) substrate, engineered for long‐wave/ultra‐long‐wave infrared (LWIR/ULWIR) applications. Finite element method (FEM) and equivalent circuit model (ECM) simulations confirm its exceptional performance: an ...
Jiayu Jia, Yanfang Xiao, Lingling Yang, Bin Cai, Yongzhi Cheng, Hui Luo, Xiangcheng Li   +6 more
wiley   +1 more source

A Two‐Stage Cascading Amplification Strategy Based on Zn2+‐Doped WOX Nanozymes for Ultrasensitive Lateral Flow Immunoassays of Clostridium Difficile Toxin B

Advanced Science, Volume 13, Issue 3, 14 January 2026.
Based on the modulation of active sites and electronic structure of substrate materials, along with a colorimetric two‐stage cascading enhancement strategy, an LFIA platform with highly efficient POD‐mimetic enzymes is developed, achieving highly sensitive detection of Clostridium difficile toxin B.
Junhua Su, Zhenzhen Liu, Renjie Xiong, Renlong zhu, Zijin Tong, Yufei Liu, Rui Xiao   +6 more
wiley   +1 more source

High-resolution 3D-printed reflective micro-collimators for facet-emitting mid-infrared lasers [PDF]

APL Photonics
Highly divergent and asymmetric beam profiles are an inherent limitation of facet-emitting mid-infrared semiconductor lasers and complicate their use in free-space optical systems.
R. Szedlak, B. Kaminski, G. Winkler, M. Traunfellner, M. Lunzer, P. Gruber, J. Nauschütz, J. Fuchsberger, M. Piotrowski, P. Kluczynski, R. Weih, B. Schwarz   +11 more
doaj   +1 more source

Environmental Monitoring of Methane with Quartz-Enhanced Photoacoustic Spectroscopy Exploiting an Electronic Hygrometer to Compensate the H₂O Influence on the Sensor Signal

Sensors, 2020
A dual-gas sensor based on the combination of a quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor and an electronic hygrometer was realized for the simultaneous detection of methane (CH4) and water vapor (H2O) in air. The QEPAS sensor employed an
Arianna Elefante, Giansergio Menduni, Hubert Rossmadl, Verena Mackowiak, Marilena Giglio, Angelo Sampaolo, Pietro Patimisco, Vittorio M. N. Passaro, Vincenzo Spagnolo   +8 more
doaj   +1 more source

Mid‐Infrared Free‐Space Optical Communications: Technologies, Demonstrations and Future Directions

IET Optoelectronics, Volume 20, Issue 1, January/December 2026.
Free‐space optical (FSO) communication is increasingly extending beyond the near‐infrared to the mid‐wave infrared (MWIR) and long‐wave infrared (LWIR) regions, which offer reduced turbulence, scattering and absorption for more robust links. This review summarises recent advances in MWIR/LWIR FSO technologies, including quantum cascade lasers, lithium ...
Darja Cirjulina, Zhuoyan Zhang, Abdul Hayee, Armands Ostrovskis, Richard Schatz, Hamza Dely, Yan‐Ting Sun, Toms Salgals, Sandis Spolitis, Vjaceslavs Bobrovs, Lu Zhang, Djamal Gacemi, Angela Vasanelli, Carlo Sirtori, Xianbin Yu, Oskars Ozolins, Xiaodan Pang   +16 more
wiley   +1 more source

Simulation of Transport and Gain in Quantum Cascade Lasers

, 2003
Quantum cascade lasers can be modeled within a hierarchy of different approaches: Standard rate equations for the electron densities in the levels, semiclassical Boltzmann equation for the microscopic distribution functions, and quantum kinetics ...
Lee, S. -C., Pereira Jr, M. F., Wacker, A.   +2 more
core   +2 more sources

Breath by Breath: Navigating the Landscape of Exhaled Breath in Clinical Research and Prospects for the Future

Journal of Analytical Methods in Chemistry, Volume 2026, Issue 1, 2026.
Exhaled breath analysis (EBA) has evolved as a noninvasive diagnostic technique with enormous promise in healthcare. The development in this area is based on the concept that the breathalyzers employed to measure the alcohol concentration in the blood can be utilized to evaluate health by analyzing the intricate chemical makeup of exhaled breath, which
Nisha Parikh, Hetansh Rao, Akshada Dabhade, Vishwa Patel, Vikalp Shroff, Deep Prajapati, Palak Parikh, Ketan Ranch, B. Mahalakshmi, Shery Jacob, Sai H. S. Boddu, Maria Jose Trujillo-Rodriguez   +11 more
wiley   +1 more source