Results 181 to 190 of about 59,852 (304)

A pulsed optoelectronic microwave source with high power and frequency tunability. [PDF]

Nat Commun
Niu X, Wang L, Zhang B, Ling J, Zhang Q, Yi M, Yao J, Hou J, Yang H, Xu X, Jiang B, He J, Liu J, Zhang J, Jing H, Xun T, Zhang J.   +16 more
europepmc   +1 more source

Chameleonic Color‐Variable Microbead Emitters for Multilevel Spectroscopic Encryption from Visible to Infrared Wavelengths

Advanced Optical Materials, EarlyView.
Whispering‐gallery‐mode microresonators with sharp resonant peaks enable photonic barcoding. Similar to a chameleon, a rare‐earth‐free microcavity with π‐conjugated PAHs enables visibleto‐near infrared color generation from a single microbead. The unique resonat emission (spectral barcode) can be dynamically transformed via excitation wavelength change,
Barun Kumar Barman, Keisuke Watanabe, Kenzo Deguchi, Shinobu Ohki, Kenjiro Hashi, Atsushi Goto, Tadaaki Nagao   +6 more
wiley   +1 more source

Multilevel Optical Programming of Intrinsic Vacancies in Solution‐Processed MoS2 Films for Retinomorphic Color Differentiation

Advanced Optical Materials, EarlyView.
Solution‐processed MoS2 films with intrinsic sulfur‐vacancy traps are used to integrate light sensing and memory in a simple two‐terminal pixel. Successive optical pulses program persistent, multilevel conductance states, while oxygen exposure enables rapid erasure.
Jihyun Kim, Jiyong Yoon, Gwang Ya Kim, Kijeong Nam, Jaewon Heo, In Soo Kim, Dongjoon Rhee, Donghee Son, Joohoon Kang   +8 more
wiley   +1 more source

Super-dense point clouds acquired by an ultralight 10 g solid-state single photon LiDAR. [PDF]

Nat Commun
Ohno T, Utagawa Y, Tanabe M, Sugiyama T, Matsumura T.   +4 more
europepmc   +1 more source

TM-mode AlGaInAs/InP amplifying waveguide optical isolator with 12.7dB isolation [PDF]

, 2006
Baets, Roel, DAGENS, B, DECOBERT, J, LAGAE, L, LE GOUEZIGOU, O, MAKE, D, Van Parys, Wouter, Van Thourhout, Dries, VANHEERTUM, R   +8 more
core   +2 more sources

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

Versatile high-power monolithic all-glass fiber amplifier for pulsed signals with a wide range of repetition rates. [PDF]

Sci Rep
Fathi H, Aghayari E, Grishchenko A, Yadav A, Rafailov E, Gumenyuk R, Filippov V.   +6 more
europepmc   +1 more source

Intramolecular FRET Cascades Enable Small Efficiency Roll‐Off in Solution‐Processed OLEDs

Advanced Optical Materials, EarlyView.
This work highlights how an intramolecular FRET design strategy in solution‐processable MR‐TADF emitters enables narrowband emission, high PLQY, and efficient exciton harvesting. The resulting hyperfluorescent solution‐processed OLEDs reach up to 20.7% EQEmax with minimal efficiency roll‐off even at 10 000 cd m−2, demonstrating strong potential for ...
Mahni Fatahi, Debasish Barman, Youichi Tsuchiya, Chihaya Adachi, Eli Zysman‐Colman   +4 more
wiley   +1 more source

A bell-bloom atomic magnetic-videorecorder with global shutter and differential readout. [PDF]

Microsyst Nanoeng
He X, Dong H, Hua Z, Ye H, Xu C, Li X, Guo H, Li Z, Wen H, Tang J, Ma Z, Liu J.   +11 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