Results 201 to 210 of about 10,259 (303)

Enhanced Contribution of Biexciton‐Mediated Decay Kinetics in Perovskite Nanocrystals Via Sequential Ultrafast Excitation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Sequential ultrafast excitation is shown to increase the relative kinetic weighting of biexciton‐mediated decay in CsPbBr3 nanocrystals without increasing the total excitation fluence. By temporally structuring excitation within the exciton lifetime, the early‐time fast decay contribution becomes more pronounced while the fitted fast decay constants ...
Lijie Wang, Renqian Zhou, Malte Oppermann, Xi Zhang, Jianxin Wang, Jun Yin, Osman M. Bakr, Majed Chergui, Omar F. Mohammed   +8 more
wiley   +1 more source

Optical frequency comb integration in radio telescopes: advancing signal generation and phase calibration. [PDF]

Light Sci Appl
Hyun M, Ahn C, Choi J, Baek J, Jeong W, Je DH, Byun DY, Wagner J, Heo MS, Jung T, Kim J.   +10 more
europepmc   +1 more source

Organic Photodetectors and Sensors for Low‐Light and Infrared Applications

Electron, EarlyView.
This mini review highlights recent advances in organic photodetectors and sensors for low‐light and infrared applications, emphasizing molecular design, device architectures, and interface engineering that improve charge transport, detectivity, speed, and spectral selectivity.
Swarup Biswas, Hyeok Kim
wiley   +1 more source

Thin film lithium niobate on sapphire for integrated mid-infrared modulator. [PDF]

Nat Commun
Didier P, Jain P, Bertrand M, Kellner J, Pitz O, Dai Z, Kuttner T, Beck M, Chen B, Faist J, Grange R.   +10 more
europepmc   +1 more source

Ultrafast oscillations in the human brain and their functional significance

Epilepsia, EarlyView.
Abstract Objective The upper frequency limit of human brain activity remains unknown. Using ultrahigh sampling rate (≥20 kHz) intracranial microelectroencephalography, this study aimed to systematically explore and quantitatively characterize brain field oscillations beyond the established high‐frequency oscillation range (>2 kHz), and to determine ...
Milan Brázdil, Vojtěch Trávníček, Jonathan Curot, Martin Pail, Monika Służewska‐Niedźwiedź, Robert Roman, Filip Plešinger, Emmanuel Barbeau, Michal Kucewicz, Petr Klimeš, Jan Cimbálník, Pavel Jurák, William C. Stacey, Gregory A. Worrell   +13 more
wiley   +1 more source

A fast X-ray shutter for high-power beams. [PDF]

J Synchrotron Radiat
Lachat T, Rösner B, Diaz A, Donath X, Menzel A, Holler M.   +5 more
europepmc   +1 more source

Paroxysmal slow waves mark ictal networks

Epilepsia, EarlyView.
Abstract Objective Epilepsy diagnosis and treatment monitoring are hindered by the episodic, heterogeneous expression of seizures and by normal‐appearing scalp electroencephalography (EEG) in many patients. We previously described paroxysmal slow‐wave events (PSWEs), brief epochs of broadband slowing detectable on EEG in people with epilepsy.
Florent J. M. Boyer‐Aymé, Hamza Imtiaz, Ofer Prager, Evyatar Swissa, Alaa Abu Ahmad, Yonatan Serlin, Refat Aboghazleh, Ilan Goldberg, Maayan Ben nun Caller, Idit Tamir, Oded Shor, Ben Whatley, Felix Benninger, Alon Friedman   +13 more
wiley   +1 more source

Enabling state-of-the-art sensitivity of patch-antenna-coupled TeraFETs for the >1-THz frequency band using superstrate lenses

Holstein J, But DB, Krysl A, Lisauskas A, Roskos HG.   +4 more
europepmc   +1 more source

Broadband, low-noise heterojunction photodiodes enabled by simple and scalable transfer of carbon nanowalls. [PDF]

Sci Rep
Yerlanuly Y, Parkhomenko HP, Zhumadilov RY, Nemkayeva RR, Kyrykbay BA, Solovan MM, Mostovyi AI, Ramazanov TS, Gabdullin MT, Jumabekov AN, Brus VV.   +10 more
europepmc   +1 more source

Lead‐free halide perovskites for efficient light‐emitting devices

FlexMat, EarlyView.
Overview of Lead‐free metal halide perovskites with different categories and optoelectronic application directions, including solid‐state lighting, light‐emitting diodes, piezoluminescence, flexible electronics, scintillators and CPL emitters. Abstract Lead halide perovskites exhibit promising optoelectronic properties for optoelectronic applications ...
Yueqi Shen, Kefan Meng, Yiqi Zhao, Chaoran Zhou, Jiaye Shu, Di Zhang, Chengqian Cao, Wanxin Chen, Yefeng Zhou, Weihua Ning   +9 more
wiley   +1 more source