Results 151 to 160 of about 49,738 (310)

A Dual‐Channel Synergistic Ultrasensitive Biosensor for Tumor Liquid Biopsy

open access: yesAdvanced Science, EarlyView.
ABSTRACT Liquid biopsy technology, which detects circulating tumor DNA (ctDNA) in cerebrospinal fluid, plays a crucial role in the early diagnosis and precision treatment of gliomas. However, the intrinsically low abundance and rapid clearance of ctDNA pose substantial challenges for conventional analytical techniques, such as droplet digital PCR and ...
Yu Sun   +12 more
wiley   +1 more source

Impedance‐Matched High‐Overtone Thickness‐Shear Bulk Acoustic Resonators With Scalable Mode Volume

open access: yesAdvanced Science, EarlyView.
A bottom‐electrode‐free high‐overtone bulk acoustic resonator is achieved by lateral excitation of antisymmetric thickness‐shear modes on a lithium‐niobate‐on‐silicon platform. Planar electrode geometry eliminates conventional loading along the resonance path and confines acoustic energy within the electrode gap.
Zi‐Dong Zhang   +7 more
wiley   +1 more source

Protein-adhesive and protein-resistant functionalized silicon surfaces [PDF]

open access: yes
A series of new ω-alkenyl tertiary amine N-oxides is prepared in solution and immobilized on hydrofluoric acid-etched silicon {111} wafers. These monolayers are characterized by X-ray photoelectron spectroscopy, contact angle measurements, atomic force ...
Cooper, Amy L.   +8 more
core  

A Universal Approach to Enhancing Silicon Hot‐Carrier Photodetectors for CMOS‐Compatible SWIR Imaging

open access: yesAdvanced Science, EarlyView.
Silicon hot‐carrier photodetectors offer a CMOS‐compatible pathway for SWIR detection but suffer from intrinsically low quantum efficiency. Here, we introduce a quasi‐generalized antireflection coating (QARC) that universally enhances optical absorption and quantum efficiency, enabling the first CMOS‐compatible SWIR imaging with silicon hot‐carrier ...
Eui‐Hyoun Ryu   +11 more
wiley   +1 more source

Comparative Benchmarking of Glass and Silicon Nitride Nanopores for Single-Molecule Detection. [PDF]

open access: yesACS Nano
Zheng F   +8 more
europepmc   +1 more source

Influences of surface quality on the rolling contact fatique behaviour of ceramics

open access: yes
A novel eccentric lapping machine was designed by the author and manufactured in-house, to serve as a test bench to investigate the finishing process parameters in relation to surface quality, as well as the feasibility of accelerating the finishing ...
Kang, J.
core  

Backbone‐Length‐Optimized Inhibitors Deliver Long‐Retention Selectivity in Area‐Selective ALD of VO2

open access: yesAdvanced Science, EarlyView.
Area‐selective VO2 ALD is found to depend critically on inhibitor backbone length, which governs physisorption, chemisorption stability, and packing efficiency in a coupled manner. An intermediate backbone‐length achieves the best long‐retention selectivity, establishing a chemically and geometrically grounded design principle for small‐molecule ...
Hae Lin Yang   +9 more
wiley   +1 more source

Integrated tunable green light source on silicon nitride. [PDF]

open access: yesLight Sci Appl
Wang G   +9 more
europepmc   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Photoluminescence spectroscopy of sputtering Er-doped silicon-rich silicon nitride films

open access: yes, 2009
Er-doped silicon-rich silicon nitride (SRN) films were deposited on silicon substrate by an RF magnetron reaction sputtering system. After high temperature annealing, the films show intense photoluminescence in both the visible and infrared regions ...
Cheng Buwen   +9 more
core  

Home - About - Disclaimer - Privacy