Results 41 to 50 of about 13,367,485 (282)

A New Design of Metamaterials for SAR Reduction

Measurement Science Review, 2013
The purpose of this paper is to calculate the reduction of specific absorption rate (SAR) with a new design of square metamaterials (SMMs). The finite-difference time-domain (FDTD) method with lossy-Drude model is adopted in this analysis.
Faruque M. R. I., Islam M. T., Ali M. A. M.   +2 more
doaj   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Specific apsorpatioj rate [PDF]

, 2015
U ovom radu smo definirali što je SAR- specifična apsorbirana snaga, kako se izračunava, što predstavlja i kako se mjeri. Također, u ovom radu je dan prostor postivanju Hrvatskh normi.This paper present the Specific Absorption Rate (SAR), what does it ...
Ujhazi, Christian
core   +1 more source

Helicity‐Defined Analog Conductance States in Chiral Perovskite Synapses

Advanced Materials, EarlyView.
Chiral perovskite synapses convert the handedness of circularly polarized light into persistent analog memory during electrical programming. An optimized n = 3 structure combines strong helicity selectivity with low read noise, enabling 72 distinct conductance levels.
Min Jong Lee, Hyoungwook Cho, Sang Heon Lee, Ohhyun Kwon, Minil Kang, Dong Gyu Lee, Seongwon Lee, Tae Kyung Lee, Gyeong Min Lee, Minseong Um, Sung Su Yoon, Gayoung Ham, Hyojung Cha, Hyungju Ahn, SungWoo Nam, Hyung‐Min Lee, Jae Won Shim   +16 more
wiley   +1 more source

Local Specific Absorption Rate (SAR) Measurement System for Human Body in Realistic In-Vehicle Scenarios

IEEE Open Journal of Antennas and Propagation
Specific absorption rate (SAR) measurements for the human exposure in vehicles generally follow the standards such as IEC 62209 series, but these standards do not account for the in-vehicle propagation environment, including reflections, multipath ...
Feng Fang, Xin Zhou, Shichen Yang, Yongjun Tian, Jiyu Wang, Shiwei Sha, Zhen Xue, Lei Xing, Qian Xu   +8 more
doaj   +1 more source

The effect of metal objects on the SAR and temperature increase in the human head exposed to dipole antenna (numerical analysis)

Case Studies in Thermal Engineering, 2020
Wearable metal objects with high electromagnetic reflection characteristics can cause interference with the incident waves during exposure to the electromagnetic (EM) radiation.
Deepshikha Bhargava, Phadungsak Rattanadecho, Teerapot Wessapan   +2 more
doaj   +1 more source

Synopsis of the specific absorption rate distribution derived from electromagnetic field simulations.

, 2013
Specific absorption rate (SAR) hotspot diameter in the axial plane for iso-SAR 90%, iso-SAR 75%, iso-SAR 50% and iso-SAR 25% contour lines obtained from EMF simulations using discrete MR frequencies ranging from 1.5 T (64 MHz) to 14.0 T (600 MHz).
Andreas Graessl (405055), Helmar Waiczies (96064), Davide Santoro (298005), Reiner Seemann (405054), Peter Wust (15373), Lukas Winter (298007), Werner Hoffmann (405053), Alexander Müller (298009), Celal Özerdem (298016), Thoralf Niendorf (148468)   +9 more
core   +1 more source

Rubber‐Glass‐Crystal Triple Phase Transition in Polyacrylamide Hydrogels and Environment‐Adaptive Shape Memory Effect

Advanced Materials Interfaces, EarlyView.
By analyzing the thermal‐mechanical properties and molecular‐scale interactions in polyacrylamide (PAAM) hydrogels, this research demonstrates a rubber‐glass‐crystal phase transition under the combined stimuli of temperature and moisture. Because of these hybrid phase transitions, PAAM hydrogels exhibit shape memory behavior in thermal and moist ...
Shuai Xu, Han Li, Wenjing Lu, Yiheng Xue, Jincheng Lei, Linchun He, Yu Chai, Zishun Liu   +7 more
wiley   +1 more source

Correlation of specific absorption rates in the human head due to multiple independent sources, Loughborough Antennas & Propagation Conference, Loughborough, 16th - 17th November 2009

, 2009
Loughborough Antennas & Propagation Conference, Loughborough, 16th - 17th November 2009This paper examines how the SAR in the head is combined when exposed to the field due to multiple sources.
Morrow, Ivor L., Derat, B., Whittow, W., Panagamuwa, C.   +3 more
core   +3 more sources

A Novel Technology for Fast and Accurate Specific Absorption Rate Measurement

, 2013
LGEP 2014 ID = 1666International audienceStandard Specific Absorption Rate (SAR) measurement methods are highly time consuming. Compliance test lead times for mobile wireless devices are incompatible with current needs in the industry and become a ...
Quelever, Kristell, M. Dembinski, B. Derat, Derat, Benoit, A. Cozza, T. Julien, Aberbour, L., Pannetrat, Stéphane, L. Aberbour, Julien, T., K. Quelever, Dembinski, M., S. Pannetrat, Cozza, Andréa   +13 more
core   +1 more source