Results 151 to 160 of about 6,564,297 (383)

Edible and Recyclable Gelatin‐Based Electronics for High‐Precision Health and Environmental Monitoring

open access: yesAdvanced Science, EarlyView.
An edible and recyclable composite film composed of gelatin and activated charcoal is presented for multifunctional health and environmental monitoring. The edible films exhibit tuneable mechanical and electrical properties, along with multimodal sensing capabilities for strain, humidity, and temperature. The composite film is degradable and recyclable,
Ming Dong   +6 more
wiley   +1 more source

Bridged Conductive Nanofibrous Membrane Overcoming the Porosity‐Conductivity Trade‐Off for Electrothermal Air Purification

open access: yesAdvanced Science, EarlyView.
To overcome the porosity‐conductivity trade‐off in conductive porous membranes, a conductive nanofibrous membrane bridged by self‐assembled PPy nanowires is constructed, integrating multiscale porosity with continuous electron pathways. This material‐structure‐function strategy achieves low‐resistance and high‐efficiency filtration combined with ...
Xiaoxue Yao   +10 more
wiley   +1 more source

L-band radar sensing of soil moisture [PDF]

open access: yes
The performance of an L-band, 25 cm wavelength imaging synthetic aperture radar was assessed for soil moisture determination, and the temporal variability of radar returns from a number of agricultural fields was studied.
Atwater, S.   +5 more
core   +1 more source

Polydopamine Nanodots Ameliorate Inflammatory Bowel Disease by Restoring Redox Homeostasis and Intestinal Microenvironment

open access: yesAdvanced Science, EarlyView.
A novel melanin‐based therapeutic composed of ultrasmall polydopamine nanodots is employed as an efficient oral formulation for the targeted treatment of inflammatory bowel disease. The potential therapeutic mechanism of polydopamine nanodots mainly involves the elimination of excessive oxidative stress, the reduction of ROS‐mediated proinflammatory ...
Zhen Ding   +11 more
wiley   +1 more source

Metasurfaced Reverberation Chamber

open access: yesScientific Reports, 2018
The concept of metasurfaced reverberation chamber (RC) is introduced in this paper. It is shown that by coating the chamber wall with a rotating 1-bit random coding metasurface, it is possible to enlarge the test zone of the RC while maintaining the ...
Hengyi Sun   +7 more
doaj   +1 more source

Experimental Synthetic Aperture Radar with Dynamic Metasurfaces

open access: yes, 2017
We investigate the use of a dynamic metasurface as the transmitting antenna for a synthetic aperture radar (SAR) imaging system. The dynamic metasurface consists of a one-dimensional microstrip waveguide with complementary electric resonator (cELC ...
Boyarsky, Michael   +6 more
core   +2 more sources

Rethinking Matrigel: The Complex Journey to Matrix Alternatives in Organoid Culture

open access: yesAdvanced Science, EarlyView.
Matrigel remains the most widely used scaffold in organoid and 3D culture despite its murine origin, variability, and translational limitations. This review discusses the barriers to replacing Matrigel with xeno‐free alternatives and introduces practical tools, including a matrix selection checklist and scaffold assessment criteria, to guide the ...
Lisa Wolff, Sven Hendrix
wiley   +1 more source

An Extended Virtual Aperture Imaging Model for Through-the-wall Sensing and Its Environmental Parameters Estimation [PDF]

open access: yes, 2014
Through-the-wall imaging (TWI) radar has been given increasing attention in recent years. However, prior knowledge about environmental parameters, such as wall thickness and dielectric constant, and the standoff distance between an array and a wall, is ...
Hu, Jun   +4 more
core   +1 more source

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