Results 121 to 130 of about 7,836,199 (284)

2-10 μm Mid-infrared Supercontinuum Light Sources [PDF]

, 2016
Spectroscopy is the study of how light interacts with molecules, which can be used to identify various substances in for example foods and medicine, by observing which parts of the light is absorbed after interaction with the sample.
Petersen, Christian Rosenberg
core  

An AI‐Enabled All‐In‐One Visual, Proximity, and Tactile Perception Multimodal Sensor

Advanced Robotics Research, EarlyView.
Targeting integrated multimodal perception of robots, an AI‐enabled all‐in‐one multimodal sensor is proposed. This sensor is capable of perceiving three types of modalities, including vision, proximity, and tactility. By toggling an ultraviolet light and adjusting the camera focus, it switches smoothly between multiple perceptual modalities, enabling ...
Menghao Pu, Tiyong Zhao, Lingxi Zhang, Chaoqun Han, Zhiping Chai, Yifan Zhou, Han Ding, Zhigang Wu   +7 more
wiley   +1 more source

Efficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media

Scientific Reports, 2017
Peak and average power scalability is the key feature of advancing femtosecond laser technology. Today, near-infrared light sources are capable of providing hundreds of Watts of average power.
Marcus Seidel, Jonathan Brons, Gunnar Arisholm, Kilian Fritsch, Vladimir Pervak, Oleg Pronin   +5 more
doaj   +1 more source

Development of tunable mid‐infrared laser at 10–25 μm

Microwave and optical technology letters (Print)
Ten to 25 μm‐long‐wavelength mid‐infrared laser has broad application prospects in fields such as military, industrial, medical, and spectroscopy. Currently, lasers capable of emitting 10–25 μm‐long‐wavelength mid‐infrared radiation include CO2 lasers ...
Ke Wang, Lu Zhao, Kuan Li, C. Niu, Chun-Ting Wu, Yongji Yu   +5 more
semanticscholar   +1 more source

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Atomic Tuning of Metal‐Support Interactions for Pathway‐Selective CO2 Photoreduction on TiO2

Advanced Science, EarlyView.
Single‐atom Fe and Cu catalysts anchored on TiO2 steer photocatalytic CO2 reduction toward distinct pathways. Fe sites favor rapid *CO desorption and selective CO formation, whereas Cu sites stabilize *CHO intermediates, enabling deep reduction and C─C coupling. Combined spectroscopy and DFT calculations reveal how metal–support interactions and oxygen
Dongyun Kim, Wonjae Ko, Byoung‐Hoon Lee, Sanghoon Kim, Yun Do Kim, Hyunsoo Ahn, Yoon Jung, Chan Woo Lee, Kug‐Seung Lee, Eunhee Gong, Junho Lee, Minho Kim, Taeghwan Hyeon, Su‐Il In   +13 more
wiley   +1 more source

Radio-excess Active Galactic Nuclei in Dwarf Galaxies: Multiwavelength Diagnostics from Optical Spectroscopy to Mid-infrared and Variability Analysis

The Astrophysical Journal
Detecting active galactic nuclei (AGNs) in dwarf galaxies is crucial for probing low-mass black hole demographics, yet remains intrinsically and observationally challenging because most diagnostics are calibrated for massive systems.
Yuan Xu, Feng Huang, Mouyuan Sun, Taotao Fang, Jianfeng Wu, Qingzheng Yu, Chuan He   +6 more
doaj   +1 more source

Whispering-Gallery-Mode Microcavity Lasers from Visible to Mid-Infrared: Applications

Photonics
Whispering-gallery-mode (WGM) microcavities, with their ultra-high quality factors and deeply confined mode volumes, provide strong light–matter interaction and underpin a broad range of emerging photonic technologies.
Angzhen Li, Yindong Zhang, Xiaosong Lu
doaj   +1 more source

Harnessing Phase Separation for the Development of High‐Performance Hydrogels

Advanced Science, EarlyView.
ABSTRACT Hydrogels are indispensable for the development of next‐generation bioelectronics, soft robotics, and biomedical devices, where their mechanical properties determine performance and reliability. Among strategies to enhance hydrogel mechanics, phase separation enables controlled heterogeneity resulting in gel networks that are reinforced by ...
Yue Shao, Yiming Ma, Baihao Shao, Molly M. Stevens   +3 more
wiley   +1 more source

Mid-infrared InAs/InP quantum-dot lasers

Light: Science & Applications
Mid-infrared semiconductor lasers operating in the 2.0–5.0 μm spectral range play an important role for various applications, including trace-gas detection, biomedical analysis, and free-space optical communication.
Yangqian Wang, Hui Jia, Jae-Seong Park, Haotian Zeng, Igor P. Marko, Matthew Bentley, Khalil El Hajraoui, Shangfeng Liu, Bo Yang, Calum Dear, Mengxun Bai, Huiwen Deng, Chong Chen, Jiajing Yuan, Jun Li, Kongming Liu, Dominic A. Duffy, Zhao Yan, Zihao Wang, Stephen J. Sweeney, Qiandong Zhuang, Quentin M. Ramasse, Siming Chen, Mingchu Tang, Qiang Li, Alwyn Seeds, Huiyun Liu   +26 more
doaj   +1 more source