In Situ Construction of Flexible Low‐Dimensional van der Waals Material Photodetectors

Advanced Physics Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Abstract By virtue of the excellent flexibility, conformability, portability, and aesthetics, wearable photodetectors have attracted worldwide research enthusiasm over past decade. However, traditional bulk covalent semiconductors are difficult to be applied due their pronounced rigidity. Profiting from self‐passivated surface, carrier mobility, strong light‐harvesting ability, low‐dimensional van der Waals materials (LDvdWMs) shown immense potential for application in optoelectronic devices. Nevertheless, preparation flexible through exfoliation/transfer or solution methods has suffered severe drawbacks spanning low production yield, contamination, uncompetitive device properties. Therefore, researchers been committed exploring alternative strategies. In response this, current review systematically summarizes latest advancements directly constructing LDvdWM on substrates, including developing low‐melting‐point targeted materials, electron‐beam‐enabled crystallization, photonic modified chemical vapor deposition, pulsed‐laser with elaboration fundamental mechanisms enabling situ deposition LDvdWMs. Finally, tricky challenges standing way this field epitomized solutions addressing them proposed. On whole, underscores distinctive pathways development photodetectors, which probably usher next‐generation technologies.

Language: Английский

Advancements in Bio‐Integrated Flexible Electronics for Hemodynamic Monitoring in Cardiovascular Healthcare

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Abstract Cardiovascular diseases (CVDs) remain the leading cause of global mortality, highlighting urgent need for effective monitoring and prevention strategies. The rapid advancement flexible sensing technology development conformal sensors have attracted significant attention due to their potential continuous, real‐time assessment cardiovascular health over extended periods. This review outlines recent advancements in bio‐integrated electronics designed hemodynamic broader CVD healthcare applications. It introduces key physiological indicators relevant hemodynamics, including heart rate, blood pressure, flow velocity, cardiac output. Next, it discusses engineering strategies, such as working principles configuration designs. Various non‐invasive invasive devices these are then presented. Additionally, highlights role artificial intelligence algorithms practical applications detection. Finally, proposes future directions addresses challenges field.

Language: Английский

Two‐Photon Pumped Wavelength‐Tunable Single‐Mode Plasmonic Nanolaser with Ultralow Threshold

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 18, 2024

Abstract Nonlinear optics play an important role in laser technology, optical communication, integrated optics, and other fields. However, conventional two‐photon lasing faces challenges such as high thresholds large size, which hinder the miniaturization of lasers. In this study, structure single‐crystal Au/Al 2 O 3 /CsPbBr (ScAu/Al /CPB) is constructed to achieve pumped frequency upconversion single‐mode plasmonic lasing. The strong spatial confinement near‐field enhancement surface plasmons metals enable mode output a hybrid nanocavity, significantly reducing threshold. Additionally, by applying external mechanical strain, resonant wavelength dynamically regulated, further threshold 0.48 mJ cm −2 based on piezo‐electronic effect. These results provide effective strategy for all‐optical integration development smaller, faster, more efficient nanophotonics devices.

Language: Английский