Blue InGaN chip-pumped short-wave infrared (SWIR) emitters have aroused tremendous attention and shown emerging applications in diverse fields such as healthcare, retail, agriculture. However, discovering blue light-emitting diode (LED)-pumped SWIR phosphors with a central emission wavelength over 1000 nm remains significant challenge. Herein, we demonstrate the efficient broadband luminescence of Ni2+ by simultaneously incorporating Cr3+ ions into MgGa2O4 lattice, sensitizer emitter....

Hybrid organic-inorganic lead halide perovskites have attracted significant attention due to their impressive optoelectronic properties. MAPbX3 (MA= CH3NH3+, X= Cl, Br or I), the most popular member of this family, has been recognized as an important next-generation materials contender, and remarkable progress achieved in both thin films single crystals. However, lack optimizations energy harvest, transportation, carrier extraction, process compatibility is hindering future development. In...

Abstract Today, more and silicon-based chips apply new flip-chip packages to accommodate the high density power consumption requirements of electronic products. In this case, defect detection in package is essential. However, materials are opaque visible wavelengths, making it difficult identify defects within chip or wafer. By utilizing property that near-infrared (NIR) light can pass through silicon, NIR confocal imaging a promising non-destructive method detect inside silicon chips....

High-speed trajectory tracking with real-time processing capability is particularly important in the fields of pilotless automobiles, guidance systems, robotics, and filmmaking. The conventional optical approach to high-speed involves charge coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS) image sensors, which suffer from trade-offs between resolution framerates, complexity system, enormous data-analysis processes. Here, a system designed by using time-division...

Abstract Organic photodetectors (OPDs) have attracted immense interest as solution‐processable optical signal‐capturing devices due to their various advantages, such adjustable response range, excellent weak light response, lightweight, flexibility, and ease of processing on diverse substrates. Low dark current density ( J d ) high responsivity R are key requirements necessary for achieving a specific detectivity D *). Here, an effective strategy preparing high‐performance OPDs with...

Optimal route selection of a transmission line is significantly beneficial to reduce its lightning trip-out rate. This paper proposes method, considering the minimal annual flash number lines, select optimal from initial point destination based on location system. First, ground density and distribution peak current maps are drawn via improved grid method. The node proposed these maps. objective function expressed as summation distance node, solved Dijkstra algorithm. conditional minimum...

A fast active-quenching circuit (FAQC) based on SiGe Hetero-junction Bipolar Transistor (HBT) and InGaP/GaAs HBT integrated circuits is designed for use with free-running single-photon avalanche diodes (SPADs). The performances of both InGaAsP/InP SPAD InGaAs/InP are tested. Results show that the typical duration using FAQC 1.6 ns, total afterpulse probability lower than 10% when hold-off time above 1 μs at 1.5 V excess bias or 10 3.0 bias. This result comparable to recently developed...

Effects of mesa etching and geometry on InGaAs/InAlAs avalanche photodiodes (APDs) were investigated by using both wet inductively coupled plasma (ICP) with different shapes as well etchants. It was found that the had no evident impact APDs' characteristics regardless techniques applied. Besides, ICP-etched APDs showed faster punch-through, suppressed premature surface breakdown lower dark current behaviors compared to wet-etched devices. Substantially leakage also observed for devices,...

InGaAs/InP-based negative-feedback avalanche diodes (NFADs) for 1550 nm single-photon detection with easy-to-use and low-afterpulsing features have attracted many researchers on lidar quantum optics. Here we present a fast active-quenching circuit specifically designed to exploit the performance of multi-mode fiber coupled NFAD free-running operation by further suppression afterpulsing effects. The quenching recovery processes device were characterized using electroluminescent method novel...

Flying ad hoc networks (FANETs), composed of small unmanned aerial vehicles (UAVs), possess characteristics flexibility, cost-effectiveness, and rapid deployment, rendering them highly attractive for a wide range civilian military applications. FANETs are special mobile (MANETs), have the faster network topology changes limited energy. Existing reactive routing protocols unsuitable dynamic energy FANETs. For lithium battery-powered UAV, flight endurance lasts from half an hour to two hours....

A novel pillar[5]arene-based SOF gel (<bold>SOF-AMP-G</bold>) show ultrasensitive response for ions through the competition of cation⋯π and π⋯π interactions.

A metal–graphene metamaterial device exhibiting a tunable, electromagnetically induced transparency (EIT) spectral response at terahertz frequencies is investigated. The structure composed of strip and ring resonator, which serve as the bright dark mode to induce EIT effect. By employing variable conductivity graphene dampen frequency shifts dynamically over 100 GHz, satisfies convenient post-fabrication tunability requirement. slow-light behavior proposed also analyzed with maximum group...

A frequency comb generator (FCG) based on dual-cavity Brillouin random fiber lasing oscillation in the 1.5 μm telecon spectral window is established and experimentally demonstrated. In half-open main cavity of dual cavity, stimulated scattering highly nonlinear (HNLF) Rayleigh single-mode are employed to provide sufficient gain randomly distributed feedback, respectively, for mode resonance. The sub-cavity includes an Er-doped amplifier couple back boost lower-order Stokes anti-Stokes light...

Infrared ship detection is of great significance due to its broad applicability in maritime surveillance, traffic safety and security. Multiple infrared sensors with different spectral sensitivity provide enhanced sensing capabilities, facilitating complex environments. Nevertheless, current researches lack discussion exploration imagers ranges for marine objects detection. Furthermore, unmanned vehicles (UMVs), e.g., surface (USVs) (USs), perception are usually performed embedded devices...

A novel approach for the design of multi-stimuli-responsive supramolecular functional materials was successfully developed by introducing competition π–π stacking and cation–π interactions into a pillar[5]arene-based π-gel (<bold>MP5-G</bold>).

Here, a novel pseudorotaxanes-type crosslinker of supramolecular polymer network (WP5-PN) has been constructed from host water-soluble pillar[5]arene (WP5) and guest naphthalene dimethylamine derivative (PN) via stepwise process involving multiple non-covalent interactions. The obtained polymers were able to transform into gel (WP5-PN-G) show AIE properties in DMSO-H2O binary solution. Interestingly, due the dynamic reversible nature interactions, resultant gels exhibited external...