Results 121 to 130 of about 6,696,337 (373)

Reconfigurable Microenvironments Uncover Mechano‐Sensing Timescales and Direct Cell Polarity

Advanced Functional Materials, EarlyView.
A synthetic DNA‐crosslinked cell culture matrix enables control over the mechanical microenvironment surrounding cells. Independent tuning of stiffness and stress relaxation uncovers distinct timescales of mechano‐sensing that regulate cell behavior.
Syuan‐Ku Hsiao, Markus Mukenhirn, Carsten Werner, Alf Honigmann, Elisha Krieg   +4 more
wiley   +1 more source

The coronal volume of energetic particles in solar flares as revealed by microwave imaging

, 2018
The spectrum of gyrosynchrotron emission from solar flares generally peaks in the microwave range. Its optically-thin, high-frequency component, above the spectral peak, is often used for diagnostics of the nonthermal electrons and the magnetic field in ...
Fleishman, Gregory D., Gary, Dale E., Kopnina, Varvara Yu., Loukitcheva, Maria A., Nita, Gelu M.   +4 more
core   +1 more source

Design and Applications of Multi‐Frequency Programmable Metamaterials for Adaptive Stealth

Advanced Functional Materials, EarlyView.
This article provides a comprehensive overview of metamaterials, including their fundamental principles, properties, synthesis techniques, and applications in stealth, as well as their challenges and future prospects. It covers topics that are more advanced than those typically discussed in existing review articles, while still being closely connected ...
Jonathan Tersur Orasugh, Ankita Mohanty, Amit Malakar, Suryasarathi Bose, Suprakas Sinha Ray   +4 more
wiley   +1 more source

A Novel Jamming Method Based on Sine Function Secondary Modulation and Phase Coded Modulation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
With the development of synthetic aperture radar (SAR) imaging technology, the research of SAR jamming method has become an important topic in the field of electronic countermeasures.
Guikun Liu, Guangyuan Li, Zhenyang Xu, Haoming Xu, Feng Ming, Liang Li, Chen Song, Zhengshuai Li, Peng Wang   +8 more
doaj   +1 more source

Antenna and radome loss measurements for MFMR and PMIS with appendix on MFMR/PMIS computer programs [PDF]

The NMSU/PSL radiometer antenna calibration facility is described, and the antenna and radome loss measurements made on the passive microwave imaging system and the multifrequency microwave radiometer are summarized.
Carver, K. R., Cooper, W. K.
core   +1 more source

Liquid Metals as Initiators of Free‐Radical Polymerization of Hydrogels: A Perspective

Advanced Functional Materials, EarlyView.
Gallium‐based liquid metals initiate free radical polymerization to form hydrogels without the use of toxic molecular initiators. In addition to initiating polymerization, they can act as crosslinkers, yielding softer, more extensible, and tougher hydrogels than those formed with conventional initiators.
Syed Ahmed Jaseem, Pooria Rahmani, Tushar Sakorikar, Jinwoo Ma, Omar Almutairi, Maxim A. Voinov, Alex I. Smirnov, Baihang Chen, Michael D. Dickey   +8 more
wiley   +1 more source

Fluorescent Nanodiamonds Based Theranostic Platform for pH‐Sensitive Drug Delivery and Quantum Sensing

Advanced Functional Materials, EarlyView.
A multifunctional nanodiamond platform enables pH‐triggered Diazoxide (DZX) delivery and quantum sensing of subcellular radical dynamics in triple‐negative breast cancer cells. Diamond relaxometry revealed reduced lysosomal radicals during DZX‐induced mitochondrial radical elevation, providing insights into redox modulation and organelle‐ resolved ...
Kaiqui Wu, Siyu Fan, Yue Zhang, Willem Woudstra, Thomas Mulder, Laurens Boscher Navarro, Jur van Dijken, Katja Loos, Romana Schirhagl   +8 more
wiley   +1 more source

Enhancement of Microwave Imaging Using a Metamaterial Lens

IEEE Sensors Journal, 2019
Microwave far-field imaging techniques are well suited to image source, scatterers, and anomalies in dielectric or composite materials. However, the diffraction limits restrict the resolution of far-field imaging.
S. Mukherjee, Z. Su, L. Udpa, S. Udpa, A. Tamburrino   +4 more
semanticscholar   +1 more source

Nonlinear Phase Reconstruction and Compensation Method Based on Orthonormal Complete Basis Functions in Synthetic Aperture Ladar Imaging Technology

Remote Sensing
By extending synthetic aperture technology from a microwave band to laser wavelength, the synthetic aperture ladar (SAL) achieves extremely high spatial resolution independent of the target distance in long-range imaging.
Ruihua Shi, Juanying Zhao, Dong Wang, Wei Li, Yinshen Wang, Bingnan Wang, Maosheng Xiang   +6 more
doaj   +1 more source

Sub-optical resolution of single spins using magnetic resonance imaging at room temperature in diamond

, 2010
There has been much recent interest in extending the technique of magnetic resonance imaging (MRI) down to the level of single spins with sub-optical wavelength resolution.
Arecchi, Balasubramanian, Balasubramanian, Brouri, Chang Shin, Changdong Kim, Cheng, Degen, Drndić, Fedor Jelezko, Gopalakrishnan Balasubramanian, Jörg Wrachtrup, Kitson, Philip R. Hemmer, Roman Kolesov, Rugar   +15 more
core   +1 more source