Abstract Precision phototheranostics, including photoacoustic imaging and photothermal therapy, requires stable agents. Developing such agents with high stability conversion efficiency (PTCE) remains a considerable challenge. Herein, we introduce new agent based on water‐soluble quaterrylenediimide (QDI) that can self‐assemble into nanoparticles (QDI‐NPs) in aqueous solution. Incorporating polyethylene glycol (PEG) the QDI core significantly enhances both physiological biocompatibility of...

Abstract Lead‐free halide perovskites are emerging as promising eco‐friendly candidates for next‐generation solid‐state lighting because of their nontoxicity and availability broad emission. Herein, a modified room‐temperature anti‐solvent precipitation method is developed to synthesize the Sb 3+ ‐doped, In‐based, lead‐free in microplate/microcrystal structure with different emission colors. The layered InCl 3 serves template growth Cs 2 5 (H O):Sb microplate phosphors. Moreover, presence...

Abstract Anion exchange is an effective strategy to regulate the composition and optoelectronic properties of perovskite quantum dots (PQDs). Though promising, it more desirable synthesize PQDs avoid decrease photoluminescence yield (PLQY). Herein, we developed a ligand mediated anion approach, in which phase transition from CsPbBr 3 QDs CsPbI was observed with introduction N‐Acetyl‐ l ‐cysteine (NAC) 1,3‐dimethylimidazolium iodide (DMII) aqueous solution solution. NAC expected create...

Abstract Flexible near‐infrared (NIR) photodetectors (PDs) are desired for accurate heart rate monitoring, based directly on arterial‐blood‐volume‐change detection, instead of indirect oximetry technology. In this work, a robust 3D construction flexible a‐SiGe:H p ‐ i n radial junction (RJ) PDs is explored upon soft Al foils, working at NIR wavelength 800 nm, which has the highest skin transparency and least absorption difference from oxyhemoglobin deoxyhemoglobin variation. The RJ‐PDs...

Abstract Marrying nanostructures with thin films is a recent trend in flexible optoelectronics to improve light trapping and mechanical stability. Radial junction (RJ) a‐Si:H film optoelectronics, directly deposited upon the vapor‐liquid‐solid (VLS) grown silicon nanowires (SiNWs), can pave way achieving excellent flexibility high power‐to‐weight ratio (PTWR). Thanks their vertical‐standing geometry, SiNWs framework enhance stability of RJ units, by keeping working region far away from...

Abstract Graphene nanoribbons are ideal candidates to serve as highly conductive, flexible, and transparent interconnections, or the active channels for nanoelectronics. However, patterning narrow graphene <100 nm wide usually requires inefficient micro/nano fabrication processes, which hard implement large area flexible electronic sensory applications. Here, we develop a precise scalable nanowire lithography technology that enables reliable batch manufacturing of ultra-long nanoribbon...

Implanted pacemakers are usually bulky and rigid electronics that constraint by limited battery lifetimes, need to be installed repaired via surgeries risk secondary infection injury. In this work, a flexible self-powered photoelectric cardiac stimulator is demonstrated based on hydrogenated amorphous Si (a-Si:H) radial p-i-n junctions (RJs), constructed upon standing nanowires grown directly aluminum thin foils. The RJ stimulators, with an open-circuit voltage of 0.67 V short-circuit...

Metasurfaces are ultrathin and flat layers of subwavelength nanostructures composed metallic or high‐refractive‐index materials. They can alter lightwave properties effectively show significant application potential in various nanophotonic technologies. The meta‐atoms generally carved by electron beam lithography focused ion beam. It is challenging to produce large‐scale metasurface devices at low cost. Herein, the fabrication low‐cost large‐area plasmonic dielectric metasurfaces through a...

Growing high quality silicon nanowires (SiNWs) at elevated temperature on cooler polymer films seems to be contradictive but highly desirable for building performance flexible and wearable electronics. In this work, we demonstrate a superfast (vnw > 3.5 μm·s–1) growth of SiNWs polymer/glass substrates, powered by self-selected laser 808 nm heating indium catalyst droplets that absorb amorphous Si layer produce SiNWs. Because the tiny heat capacity nanodroplets, SiNW can quickly heated up...

Geometry and doping control in silicon nanowires (SiNWs) are both crucial aspects fabricating three-dimensional (3D) radial junction thin film solar cells, while the coupling between them remains a peculiar aspect to be better understood. In this work, we focus on geometry evolution effects realized tin-catalyzed SiNWs grown via plasma-enhanced vapor-liquid-solid procedure by using different diborane (B2H6) dopant flows. It is shown that with increase of B2H6 flow rate from 0.3 2.1 SCCM,...

A robust radial junction (RJ) structure directly constructed upon the surface of a flexible Al foil substrate shows promising potential to boost wearable and portable applications, where silicon nanowire (SiNW) supported multilayer has proven beneficial in excellent mechanical stability sufficient light harvesting. Assigned backreflection contributed by foil, much larger current can be achieved than that on glass. While comprehensive understanding absorption under remains mainly unexplored....

The turbulent convective heat transfer behavior of nanoparticle dispersions in water with three different particle sizes (23 nm, 51 and 76 nm) is investigated experimentally a flow loop constant flux. main purpose this study to evaluate the effect size on region. experimental results show that suspended nanoparticles remarkably increase coefficient base fluid, nanofluid 76-nm particles shows higher than nanofluids containing other two sizes, especially at high Reynolds number. data are...

Aiming at solving the NVH problem in vehicles, a novel composite structure is proposed. The new uses hollow-stub phononic-crystal with filled cylinders (HPFC) plate. Any unit plate consists of lead head, silicon rubber body, an aluminum base as outer column and opposite arranged inner pole. dispersion curves are investigated by numerical simulations influences structural parameters discussed, including traditional hollow radius, thickness, height ratio, proposed filling ratio. Three arrays...

High performance is a crucial factor in seeking more competitive levelized cost of electricity for the extensive popularization c-Si solar cells. Here, CsPbBr3 quantum dots (QDs) have been first applied as light-converting layer to enhance full-spectrum light response, resulting an ∼71% enhancement power conversion efficiency within silicon-based Remarkably, even if photon energy smaller than bandgap QDs, long-wavelength external shows significant increase. Such surprising results can be...

A Schottky barrier tunneling field-effect transistor (SBT FET) built upon catalytically grown ultrathin silicon nanowires (SiNWs) offers a preferable low-temperature routine to construct top device layers for monolithic three-dimensional (3D) integration technology, but there still remain several peculiar electronic transport behaviors that need be better understood. In this work, high-performance SBT FET was fabricated based on orderly SiNWs via the in-plane solid–liquid–solid (IPSLSL)...

Semitransparent thin-film solar cells, especially those fabricated directly on building materials, have attracted much interest in the continuously increasing demands of building-integrated photovoltaic (BIPV) applications. Herein, radial junction (RJ)-structured hydrogenated amorphous silicon (a-Si:H) constructed upon nanowires (SiNWs) grown by a vapor–liquid–solid (VLS) process rough surface tinplate substrates, been successfully demonstrated. After optimizing SiNW density, an efficiency...

High performance and robustness are the key factors to boosting wearable portable applications. Although 1D crystal structure makes Sb

Seeking an ultra-compact new architecture or strategy to achieve filter-less Red/Green/Blue (RGB) color sensing is critical for developing a wide range of high-resolution, low-cost and flexible discrimination imaging applications. In this work, inversely stacked biomimetic radial junction (RJ) PINIP photodetector, comprising coaxial multilayers intrinsic doped hydrogenated amorphous Si (a-Si:H) thin films coated over silicon nanowires (SiNWs), demonstrated, which can accomplish bias-selected...

The development of a filterless imager has been eagerly awaited to overcome the diffraction limit when pixel sizes decrease subwavelength scales. We propose an architecture for based on symmetric inversely stacked radial junction (RJ) PINIP photodetector over silicon nanowires (SiNWs), whereby diameter which is less than 500 nm, preliminarily displays capability bias-selected and tunable spectrum responses R, G, B color bands. Assisted via suitably trained deep learning algorithms, can...

The reservoir of low permeability oilfields is thin and its physical property poor. oil-water relationship complex. It very difficult to classify oil, gas water layer the coincidence rate interpretation low. can no longer meet needs development only dependent on logging data. Through sidewall coring in uncertain layers area with complex statistic analysis results based geochemical pyrolysis chromatography analysis, authors think technique effectively improve oilfields, realize fine...