Results 71 to 80 of about 128,599 (282)

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

Advanced Functional Materials, EarlyView.
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

Polarization-Insensitive Concentric Circular Grating Filters Featuring a Couple of Resonant Peaks

IEEE Photonics Journal, 2015
We demonstrate here guided mode resonance (GMR) concentric circular grating filters (CCGFs) on an HfO2-on-silicon platform. The fabricated devices are realized with a membrane structure by completely removing the silicon substrate beneath the HfO2 device
Wei Wang, Qifa Liu, Gangyi Zhu, Xin Li, Shumin He, Tongliang Sa, Gao, Yongjin Wang   +7 more
doaj   +1 more source

Multiplexed holographic transmission gratings recorded in holographic polymer-dispersed liquid crystals: static and dynamic studies [PDF]

, 2005
The optimization of the experimental parameters of two multiplexed holographic transmission gratings recorded in holographic polymer-dispersed liquid crystals is investigated.
Bougrenet de la Tocnaye, Jean-Louis de, Camacho, Maria, Chevallier, Raymond, Kaiser, Jean-Luc, Massenot, Sébastien   +4 more
core   +1 more source

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

Advanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden, Carolien T. A Kuster, Amber van Broekhoven, Raphaela Allgayer, Luco Rutten, Rona Roverts, Marta Cerruti, Elena Macías‐Sánchez, Jan Hein Cornel, Salloua el Messaoudi, Anat Akiva, Nico Sommerdijk   +11 more
wiley   +1 more source

Narrow Linewidth Distributed Bragg Reflectors Based on InGaN/GaN Laser

Micromachines, 2019
A variety of emerging technologies, such as visible light communication systems, require narrow linewidths and easy-to-integrate light sources. Such a requirement could be potentially fulfilled with the distributed Bragg reflector (DBR) lasers, which are
Wuze Xie, Junze Li, Mingle Liao, Zejia Deng, Wenjie Wang, Song Sun   +5 more
doaj   +1 more source

Large bandwidth, highly efficient optical gratings through high index materials [PDF]

, 2008
We analyze the diffraction characteristics of dielectric gratings that feature a high index grating layer, and devise, through rigorous numerical calculations, large bandwidth, highly efficient, high dispersion dielectric gratings in reflection ...
Baldry, Clausnitzer, Clausnitzer, Clausnitzer, Ebizuka, Gibson, H. L. Offerhaus, Helmut Rathgen, Kogelnik, Limpert, Liu, Marciante, Moharam, Nguyen, Nishii, Néauport, Rhee, Tamura   +17 more
core   +5 more sources

Spatiotemporal Plasma–Mediated Laser Fabrication of Ultrahigh‐Aspect‐Ratio Nanochannel Arrays for Vertical Perovskite Nanowire Semiconductor Devices

Advanced Functional Materials, EarlyView.
A spatiotemporal plasma–mediated laser processing approach is developed to fabricate ultrahigh–aspect ratio nanochannel arrays and corresponding perovskite nanowire arrays within transparent materials for optoelectronics devices. The laser‐fabricated nanochannels serve as templates for controlled perovskite infiltration and crystallization, enabling ...
Taijin Wang, Lingfeng Wang, Feng Liu, Gary J. Cheng   +3 more
wiley   +1 more source

4D Printing of Self‐Immolative Polymers

Advanced Functional Materials, EarlyView.
The integration of self‐immolative polymers (SIPs) into light‐based 3D printed structures is presented as a new “living” 4D printing strategy. By exploiting their metastability and stimuli‐responsiveness, SIP‐containing printed objects can undergo rapid and triggered degrowth under ambient conditions and subsequent regrowth through polymer ...
Johannes Markhart, Philipp Mainik, Pia S. Klee, Eva Blasco   +3 more
wiley   +1 more source

Reflective Optical Encoder Capitalizing on an Index Grating Imbedded in a Compact Smart Frame

IEEE Photonics Journal, 2014
A reflective optical encoder has been proposed and realized capitalizing on a miniaturized sensing head, which integrates both a pair of index gratings and a beam router in a plastic smart frame. The index gratings play a role in selectively transmitting
Hak-Soon Lee, Sang-Shin Lee
doaj   +1 more source

Performance Testing of a Novel Off-plane Reflection Grating and Silicon Pore Optic Spectrograph at PANTER

, 2015
An X-ray spectrograph consisting of radially ruled off-plane reflection gratings and silicon pore optics was tested at the Max Planck Institute for extraterrestrial Physics PANTER X-ray test facility.
Ackermann, Marcelo, Allured, Ryan, Burwitz, Vadim, DeRoo, Casey, Donovan, Benjamin D., Günther, Ramses, Hartner, Gisela D., Marlowe, Hannah, McEntaffer, Randall L., Menz, Benedikt, Miles, Drew M., Smith, Randall K., Tutt, James H., Vacanti, Giuseppe, Yanson, Alex   +14 more
core   +1 more source