Results 141 to 150 of about 12,188 (279)

Exciton Radiative Lifetimes in Hexagonal Diamond Ge and SixGe1–x Alloys

Advanced Optical Materials, EarlyView.
Strong room‐temperature photoluminescence reported in hexagonal Ge conflicts with theory predicting a nearly dark band edge. First‐principles calculations of excitonic radiative lifetimes fill a key gap in this debate, showing that pristine hexagonal Ge remains intrinsically weakly emissive, while Si alloying only modestly shortens the lifetime and ...
Michele Re Fiorentin, Michele Amato, Maurizia Palummo   +2 more
wiley   +1 more source

Recent Progress in Gain Materials for Microlasers and Modern Digital Approaches for Biophotonics: From Dyes to Semiconductors. [PDF]

Micromachines (Basel)
Calles-Arriaga CA, Selvas-Aguilar R, Castillo-Guzmán AA, Pech-Rodríguez WJ, Rocha-Rangel E, Maldonado-Sada MT, Rodríguez-García JA, Castillo-Robles JA, Armendáriz-Mireles EN.   +8 more
europepmc   +1 more source

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

Chip-scale packaged in-line polarization-resolved detector for optically pumped magnetometers. [PDF]

Microsyst Nanoeng
Cho HJ, Na Y, Park S, Lee MH, Kim H, Ju J, Kim D, Kang IS, You JB, Park G, Sim G, Lee SI, Lee BI, Kwon SH, Song JH, Jo E, Kim TH, Rang G, Ahn JH, Ko H, Lee J, Lee JK, Moon G, Park J.   +23 more
europepmc   +1 more source

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

Exploring the feedback limits of quantum dot lasers for isolator-free photonic integrated circuits. [PDF]

Light Sci Appl
Shi Y, Dong B, Ou X, Prokoshin A, Shang C, Bowers JE, Wan Y.   +6 more
europepmc   +1 more source

Bidirectional Radio-Over-Fiber System With Phase-Modulation Downlink and RF Oscillator-Free Uplink Using a Reflective SOA [PDF]

, 2008
Gibbon, Timothy Braidwood, Tafur Monroy, Idelfonso, Yu, Xianbin   +2 more
core   +2 more sources

Numerical Modeling of Photothermal Self‐Excited Composite Oscillators

Advanced Robotics Research, EarlyView.
We present a numerical framework for simulating photothermal self‐excited oscillations. The driving mechanism is elucidated by highlighting the roles of inertia and overshoot, as well as the phase lag between the thermal moment and the oscillation angle, which together construct the feedback loop between the system state and the environmental stimulus.
Zixiao Liu, Ryan R. Rusch, Zheng Wu, Chi Chen, Pengju Shi, Hao Qiu, Ximin He   +6 more
wiley   +1 more source

Widely tunable and narrow-linewidth violet lasers enabled by UV-transparent materials. [PDF]

Nat Commun
Franken CAA, Hendriks WAPM, Winkler LV, do Nascimento AR, van Rees A, Dijkstra M, Mardani S, Kienzler D, Dekker R, van Kerkhof J, van der Slot PJM, García-Blanco SM, Boller KJ.   +12 more
europepmc   +1 more source

Highly‐Conductive and Micro‐Structured Transparent Glass Substrates for Efficient and Scalable Photoelectrochemical Applications

Advanced Science, EarlyView.
This work paves the way for practical photoelectrochemical water splitting devices by addressing key upscaling challenges related to substrate conductivity, absorber inhomogeneity, and mass transfer limitations. Integrated improvements in substrate engineering, material processing, device architecture, and operational conditions allow the development ...
Telmo da Silva Lopes, Jeffrey Capitão, Amin Khan, Leonardo Rodrigues, Dzmitry Ivanou, Tânia Lopes, Paula Dias, Adélio Mendes   +7 more
wiley   +1 more source