Results 61 to 70 of about 10,845 (304)

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

All-optical processing of multi-level phase shift keyed signals [PDF]

, 2012
A technique that allows the all-optical quantization of M-PSK signals using a parametric mixing process is discussed, including recent experimental demonstrations of high baud rate QPSK regeneration, and issues regarding future scalability of the ...
Joseph Kakande, David J. Richardson, Periklis Petropoulos, Slavík, R., Parmigiani, F., Petropoulos, P., Richardson, D.J., Kakande, J., Radan Slavík, Francesca Parmigiani   +9 more
core   +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

A High‐Throughput Live Imaging Platform to Investigate Circuit‐Dependent Regulation of Circadian Rhythms in Brain Tissue

Advanced Science, EarlyView.
Biological rhythms coordinate physiology, from genes to behavior. Study of circadian rhythms in brain tissue is constrained by limited throughput and spatial and temporal information quality. A new platform for high‐throughput, long‐term multiplexed fluorescent live imaging of circadian rhythms in brain slices is introduced.
Marco Ferrari, Natalie Ness, Julieta Acosta, Marco Brancaccio   +3 more
wiley   +1 more source

High-order coherent communications using mode-locked dark-pulse Kerr combs from microresonators [PDF]

, 2018
Microresonator frequency combs harness the nonlinear Kerr effect in an integrated optical cavity to generate a multitude of phase-locked frequency lines.
Óskar B. Helgason, Helgason, Òskar Bjarki,, Andrew M. Weiner, Weiner, Andrew M,, Mazur, Mikael, Torres Company, Victor,, F\ufcl\uf6p, Attila, Leaird, Dan. E., Andrekson, Peter, Fülöp, Attila, Dan E. Leaird, Pei-Hsun Wang, Weiner, Andrew M, Qi, Minghao, Lorences Riesgo, Abel, Wang, Pei-Hsun, Helgason, 2skar Bjarki, Qi, Minghao,, Yi Xuan, Andrekson, Peter,, Xuan, Yi,, Wang, Pei-Hsun,, Andrekson, Peter A., Mikael Mazur, Xuan, Yi, Lorences-Riesgo, Abel, Helgason, Óskar B., Fülöp, Attila,, Victor Torres-Company, Lorences Riesgo, Abel,, Torres-Company, Victor, Attila Fülöp, Torres Company, Victor, Leaird, Daniel E, Peter A. Andrekson, Abel Lorences-Riesgo, Mazur, Mikael,, Minghao Qi, Leaird, Dan. E.,   +38 more
core   +1 more source

Electrostatic Self‐Assembly Induced Nest‐Like MXene Networks on Fabric for Ultra‐Broadband Flexible Absorption

Advanced Science, EarlyView.
In this study, an electrostatically self‐assembled WPU‐MXene@FC flexible fabric constructs a “nest‐like” structure on fibers, building construct MXene multiple loss paths, achieving ultra‐wideband absorption of 25.3–1200 GHz in a thickness of 1.8 mm, while also exhibiting superhydrophobicity, acid and alkali resistance, and bending resistance ...
Min Luo, Zihao Chen, Haotian Li, Kexun Li, Wei Wang, Weishi Jiao, Donghong Wang, Qiye Wen   +7 more
wiley   +1 more source

Analysis and evaluation of optimum wavelengths for free-space optical transceivers [PDF]

, 2010
The objective of this paper is to analyse and present the latest results obtained for free-space optics (FSO) within the EU COST Action IC-0802 and within the European Space Agency (ESA) contract.
Z. Ghassemlooy, E. Leitgeb, M. S. Awan, M. Wittig, T. Plank, Wittig, Manfred, Plank, Thomas, Ozek, Faruk, Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, F. Ozek, P. Brandl, Awan, Muhammad, Brandl, Paul, Leitgeb, Erich, W. Popoola   +15 more
core   +1 more source

Impact and Compensation of Electrical-to-Optical Frequency Response on Carrierless Phase Retrieval Receivers

IEEE Photonics Journal
On carrierless phase retrieval (PR) receivers based on direct detection, bandwidth limitation of electrical-to-optical (E/O) conversion at the transmitter side (Tx) distorts the modulated optical signal.
Qi Gao, Hanzi Huang, Zhengxuan Li, Ziyue Liu, Yuanzhe Qu, Yingxiong Song   +5 more
doaj   +1 more source

Major Accomplishments in 2010 on Optical Fiber Communications

IEEE Photonics Journal, 2011
Optical fiber communications continued to advance at a rapid pace in 2010. This paper presents a brief overview of the most exciting technological advances of 2010, eking out record capacity out of optical fiber through enhancing spectral efficiency and ...
A. E. Willner, Z. Pan, M. I. Hayee
doaj   +1 more source

Dipole‐Manipulated Built‐In Electric Field Enables Ultrafast Charge Separation in Perylene Diimide Polymers for Photoelectrochemical Water Splitting

Advanced Science, EarlyView.
Molecular dipole engineering in dendritic perylene diimide polymers through nitrogen‐rich heterocyclic linkers amplifies the built‐in electric field, enabling sub‐picosecond charge separation and efficient multi‐electron accumulation. This structure–dynamics–performance relationship establishes a versatile design strategy for high‐performance organic ...
Ying‐Xin Qiao, Zicong Situ, Yi‐Jing Chen, Shuo‐Xiang Liu, Jing‐Lan Zhang, Xingqing Li, Luo‐Han Xie, Si‐Hang Xie, Qing‐Xiao Tong, Andong Xia, Zhuoran Kuang, Jing‐Xin Jian   +11 more
wiley   +1 more source