Results 41 to 50 of about 523,825 (238)

Time- and Power-Splitting Strategies for Ambient Backscatter System

IEEE Access, 2019
An ambient backscatter system could utilize the exiting ambient RF signals as both energy source and information carrier to enable the communications among battery-free devices and is deemed as a promising communication primitive for the Internet of ...
Zhe Ma, Chen He, Yanyi Rao, Jing Jiang, Shaodan Ma, Feifei Gao, Ling Xing   +6 more
doaj   +1 more source

Microstructure‑Dependent Phase Transformations Under High‑Pressure Laser Heating in Additively Manufactured AlCrFe2Ni2

Advanced Engineering Materials, EarlyView.
Additively manufactured AlCrFe2Ni2 with contrasting BCC/B2‐dominant and lamellar FCC + BCC/B2 microstructures exhibits the same pressure‐induced BCC/B2 → HCP transformation. Under laser heating at high pressure, HCP is destabilized, and a cubic BCC/B2 + FCC assemblage is recovered, while the lower‐scan‐speed microstructure transforms at a lower ...
Raimundas Sereika, Hunter Kantelis, Yogesh K. Vohra, Shengbiao Zhang, Wuxian Yang, Wen Chen   +5 more
wiley   +1 more source

Parameterization of the Aerosol Upscatter Fraction as Function of the Backscatter Fraction and Their Relationships to the Asymmetry Parameter for Radiative Transfer Calculations

Atmosphere, 2017
Simple analytical approximations for aerosol radiative forcing generally contain the aerosol upscatter fraction (the fraction of scattered light that is scattered into the upper hemisphere), while ambient measurements generally yield the backscatter ...
Hans Moosmüller, John A. Ogren
doaj   +1 more source

Impact of Hydrogen Incorporation on Electronic and Magnetic Structure of X2CrNi18‐9 Stainless Steel

Advanced Engineering Materials, EarlyView.
Hydrogen uptake in austenitic stainless steel alters both its electronic and magnetic structure. Seebeck measurements reveal hydrogen‐induced shifts in the electronic density of states, while neutron scattering uncovers nanoscale inhomogeneities that grow upon hydrogen incorporation, with the most pronounced effect observed in the PBF as‐built state ...
Torben Tappe, Louis Becker, Gaurav Kanu, Thomas F. Headen, Dirk Honecker, Gabi Schierning, Santiago Benito, Sebastian Weber, Klara Lünser, Sabrina Disch   +9 more
wiley   +1 more source

Object Tracking Using Ambient Backscatter Technology [PDF]

, 2018
Ambient backscatter is a new technology that uses ambient signals to enable communication. The system utilizes existing ambient RF radiations as the source of power and also utilizes the same as wireless medium for communication between devices.
, Priyadharshini.J, Priyanka.E, Raheela Banu.N, Ranjith Kumar.P, Ms. S. Savitha, S.Raja
core   +1 more source

Efficient Ambient LoRa Backscatter with On-Off Keying Modulation [PDF]

, 2022
Backscatter communication holds potential for ubiquitous and low-cost connectivity among low-power IoT devices. To avoid interference between the carrier signal and the backscatter signal, recent works propose a frequency-shifting technique to separate ...
Guo, Xiuzhen, Siddiqi, Awais Ahmad, Jiang, Haotian, He, Yuan, Liu, Yunhao, Shangguan, Longfei, Zhang, Jia   +6 more
core   +1 more source

Adjusting Nucleation Chemistry for the Atomic Layer Deposition of Antimony Selenide on Metal Oxide Surfaces

Advanced Engineering Materials, EarlyView.
The ALD precursor bis(trimethylsilyl)selenide is simultaneously a substrate surface inhibitor. It allows for the growth of Sb2Se3 in combination with tris(dimethylamido)antimony, but also silylates surface hydroxyl groups on the substrate if such hydroxyls are present.
Pei‐Chun Liao, Klaus Götz, Johannes Will, Mingjan Wu, Martin Dierner, Patrick Duchstein, Dirk Zahn, Tobias Unruh, Erdmann Spiecker, Julien Bachmann   +9 more
wiley   +1 more source

Aloha-NOMA for Ambient Backscatter M2M Communication in IoT Networks with Random Power Levels and Frequency Channel Assignment

, 2021
Internet of Things as known as IoT is a network pointing to a series of interconnected devices that are communicating with each other. M2M communication protocol is integral part of IoT to allowing multiple devices to communicate smoothly. Aloha-NOMA
Asmaa Hani Halbouni, Muhammad Afiq Bin Abdul Ghani, Habaebi, Mohamed Hadi, Abdul Ghani, Muhammad Afiq, Mohamed Hadi Habaebi, Halbouni, Asmaa Hani   +5 more
core   +1 more source

An Energy Efficient Cooperative Communication Scheme in Ambient RF Powered Sensor Networks

IEEE Access, 2019
The ambient radio frequency (RF) energy harvesting technology has recently been regarded as a potential solution for powering the wireless sensor networks (WSNs).
Tao Liu, Xiaomei Qu, Wenrong Tan, Yihong Cheng   +3 more
doaj   +1 more source

Signal Detection in Ambient Backscatter Systems: Fundamentals, Methods, and Trends

IEEE Access, 2023
Internet-of-Things (IoT) is rapidly growing in wireless technology, aiming to connect vast numbers of devices to gather and distribute vital information.
Shayan Zargari, Azar Hakimi, Fatemeh Rezaei, Chintha Tellambura, Amine Maaref   +4 more
doaj   +1 more source