Results 171 to 180 of about 55,354 (288)

Core‐shell structure induced surface reconstruction of PbS quantum dots toward high‐detectivity short‐wave infrared photodetectors

open access: yesInfoScience, EarlyView.
We present a core‐shell structure‐induced surface reconstruction treatment for PbS quantum dots (QDs). Highly detective photodetectors and imagers in the short‐wave infrared region are demonstrated based on the surface‐reconstructed QDs with reduced dark current density and improved QD stacking configuration, as shown by grazing‐incidence small‐angle X‐
Fan Fang   +12 more
wiley   +1 more source

Perovskite‐based time‐domain signal‐balancing LiDAR sensor with centimeter depth resolution

open access: yesInfoMat, EarlyView.
In this study, we present a monolithic high‐speed perovskite‐based photodetector capable of directly sensing the time delay between two light pulses with a temporal resolution of at least 170 ps. This outstanding time resolution is achieved through a signal‐balancing detection scheme that effectively overcomes the limitations of conventional ...
Gebhard J. Matt   +10 more
wiley   +1 more source

Domain engineered gallium oxide phototransistors enabling intelligent ultraviolet vision with dynamic gating

open access: yesInfoMat, EarlyView.
Single‐domain Si‐doped β‐Ga2O3 thin films grown on off‐axis sapphire eliminate domain boundaries, improving transport and photogating. Gate‐pulse modulation suppresses persistent photoconductivity, yielding ultrafast response and high detectivity. Integrated into a 24 × 24 array, the devices enable high frame rate DUV imaging and energy‐efficient ...
Jae Young Kim   +9 more
wiley   +1 more source

Effect of smoking over one pack daily on implant healing and health: A cohort study

open access: yesJournal of Periodontology, EarlyView.
Abstract Background This prospective cohort trial examines the effects of heavy smoking on peri‐implant marginal bone loss (MBL) and implant survival rates over 15 months. Methods Thirty subjects, categorized as either smokers (more than 20 cigarettes daily for over 5 years) or non‐smokers, were initially recruited with pocket depths ≤ 5 mm and at ...
Yaniv Mayer   +9 more
wiley   +1 more source

Efficient Robust Spontaneous Parametric Down‐Conversion via Detuning Modulated Composite Segments Designs

open access: yesLaser &Photonics Reviews, EarlyView.
Detuning modulated composite segmentation (DMCS) enables robust spontaneous parametric down‐conversion with sevenfold improved temperature stability compared to conventional designs, opening new possibilities for stable quantum photon sources. ABSTRACT Spontaneous parametric down conversion (SPDC) holds a pivotal role in quantum physics, facilitating ...
Muhammad Erew   +5 more
wiley   +1 more source

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