Results 111 to 120 of about 3,502 (339)

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

open access: yesAdvanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas   +6 more
wiley   +1 more source

Double Structure Broadband Leaky Wave Antenna

open access: yes, 2011
A leaky wave antenna contains a first and a second leaky wave antenna structure back to back against each other. Each antenna structure comprises a dielectric body and an elongated wave carrying structure, such as a slot in a conductive ground plane.
Neto, A., Dijk, R. van, Filippo, M.
core  

Control of the radiation of a silicon-based optical leaky wave antenna through optical pumping [PDF]

open access: yes, 2011
We propose the control of the radiation of an optical leaky wave antenna through optical pumping schemes. A bi-directional pumping is eventually adopted, and the tunability of the radiation is observed © 2011 ...
Capolino, Filippo   +9 more
core   +1 more source

Optimized Ex Vivo Human Liver Slice Culture Maintains Extended Viability and Function for Hepatotoxicity Testing

open access: yesAdvanced Science, EarlyView.
An optimized ex vivo human liver slice culture system preserves tissue architecture, hepatocyte function, and immune‐stromal complexity for at least five days. By refining slice thickness, oxygenation, air‐liquid interface, and extracellular matrix support, the platform enables human‐relevant hepatotoxicity testing and mechanistic studies, offering a ...
Huiche Feng   +17 more
wiley   +1 more source

Numerically-synthesized broadside-radiating leaky-wave antenna

open access: yes, 2023
In this paper, a broadside-radiating Leaky-Wave Antenna (LWA) based on a numerically-optimized impedance surface is presented. The antenna is designed using a recently-developed numerical technique for the automated design of metasurfaces, that allows to
Vecchi, Giuseppe   +2 more
core  

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

One-dimensional leaky-wave antenna producing multiple beams

open access: yesAIP Advances, 2017
In this paper, far-field pattern of one-dimensional leaky-wave antenna (LWA) is directly synthesized by sinusoidally modulating surface currents of the antenna.
Xiang Wan, Tian Yi Chen, Tie Jun Cui
doaj   +1 more source

Breakthroughs In Low-Profile Leaky-Wave HPM Antennas [PDF]

open access: yes, 2014
Abstract : This report describes progress during the 8th quarter of this program and summarizes the current status of the research. Technical activities this period included investigation and application of a simple but clarifying wave-mapping methodology that provides guidance in making more-effective use of curved platform surfaces.
openaire   +2 more sources

Development of a Human 3D Immune‐Competent Neurovascular Model Enabling Time‐Resolved Monitoring of Neuroinflammatory Dynamics and Neuroimmune Interactions

open access: yesAdvanced Science, EarlyView.
Neuroinflammation alters blood–brain barrier integrity and contributes to neurological disorders, yet existing models lack human immune complexity. This study presents a 3D, immune‐responsive platform that reconstructs key neurovascular components and enables real‐time monitoring.
Pavlo Gordiichuk   +9 more
wiley   +1 more source

Analysis of Circular Slots Leaky-Wave Antenna in Cylindrical Waveguide by Wave Concept Iterative Procedure

open access: yes, 2010
International audienceThis paper presents the analysis of circular slots leaky-wave antenna by using an iterative method based on the wave concept.
Zairi, H.   +3 more
core  

Home - About - Disclaimer - Privacy