Results 271 to 280 of about 328,962 (374)

High frequency opportunities for Alzheimer's disease. [PDF]

Brain Commun
Lisgaras CP.
europepmc   +1 more source

Pattern Formation in Non‐Equilibrium Architected Materials

Advanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source

Non-Contact Measurement of Human Vital Signs in Dynamic Conditions Using Microwave Techniques: A Review. [PDF]

Sensors (Basel)
Ostrysz M, Szczepaniak Z, Sondej T.
europepmc   +1 more source

Development of Laterally Graded X‐Ray Multilayer Optics

Advanced Materials Technologies, EarlyView.
This work presents the development of laterally graded X‐ray multilayer optics with both constant and variable lateral gradients. By precisely controlling substrate speed profiles and mask design, these multilayers achieve highly accurate lateral gradients and excellent sagittal thickness uniformity, making them ideal for spectroscopy application at ...
Arindam Majhi, Wadwan Singhapong, Wai Jue Tan, Andrey Sokolov, Stefano Agrestini, Mirian Garcia‐Fernandez, Kejin Zhou, Andrew C. Walters, Chris Bowen, Alexander J.G. Lunt, Hongchang Wang, Kawal J. Sawhney   +11 more
wiley   +1 more source

Myocardial blood flow quantification in patients with an implanted cardiodefibrillator during stress and at rest using a wideband perfusion pulse sequence: an initial feasibility study. [PDF]

J Cardiovasc Magn Reson
Fan L, Jimenez MD, Bishara D, Urban J, Hong K, Culver AE, Collins JD, Hsu LY, Wang S, Patel AR, Aboyewa OB, Topel C, Lee DC, Kim D.   +13 more
europepmc   +1 more source

Millisecond‐Switching Dual‐Band/Dual‐Polarization Ka‐Band Wavefront Control Enabled by a Complementary Liquid‐Crystal Metasurface

Advanced Materials Technologies, EarlyView.
An LCD‐compatible complementary liquid‐crystal metasurface delivers dual‐band, dual‐polarized Ka‐band wavefront control with millisecond switching via a 10‐µm LC gap. Interlaced patch/slot pairs enable independent phase tuning at 28 and 38 GHz, while strategic 45° slot rotation suppresses parasitic resonances. Measurements on a 160 × 160‐cell prototype
Daehyeon Kim, Donggeun An, Hyunjae Shin, Youngno Youn, Wonbin Hong   +4 more
wiley   +1 more source

Flexible four-port MIMO antenna loaded with frequency selective surface for on-body applications. [PDF]

Sci Rep
Sharma M, Singh DK, Sharma K, Awasthi S, Gill R, Ali T.   +5 more
europepmc   +1 more source

Design and Fabrication of High Dielectric GRIN Lens for a Directive Antenna Using a Hybrid Filled Voxel Additive Manufacturing Technique

Advanced Materials Technologies, EarlyView.
Hybrid‐filled voxel AM enables integration of high‐permittivity materials into additively manufactured devices. Using this approach, a graded refractive index (GRIN) lens is demonstrated, achieving a 50% antenna size reduction with enhanced directivity.
Qianfang Zheng, Anna Radkovskaya, Kailun Xu, Ekaterina Shamonina, Patrick S. Grant   +4 more
wiley   +1 more source

Design of a frequency selective rasorber for wideband transmission and dual-band absorption in L-S-C bands. [PDF]

Sci Rep
Pascarella F, Monorchio A, Brizi D.
europepmc   +1 more source

Compressive Sparsity Order Estimation for Wideband Cognitive Radio Receiver

, 2014
Shree Krishna Sharma, Symeon Chatzinotas, Björn Ottersten   +2 more
openalex   +2 more sources