Results 41 to 50 of about 1,138,976 (301)

A universal metasurface antenna to manipulate all fundamental characteristics of electromagnetic waves

Nature Communications, 2023
Metasurfaces have promising potential to revolutionize a variety of photonic and electronic device technologies. However, metasurfaces that can simultaneously and independently control all electromagnetics (EM) waves’ properties, including amplitude ...
Geng-Bo Wu, Jun Yan Dai, Kam Man Shum, Ka Fai Chan, Qiang Cheng, Tie Jun Cui, Chi Hou Chan   +6 more
doaj   +1 more source

Absorptive Microstrip-Fed Slot Antenna With Wide Reflectionless Band by Loading Bandstop Filter

IEEE Open Journal of Antennas and Propagation, 2021
This paper presents an absorptive microstrip-fed slot antenna with a wide reflectionless band and high radiation efficiency. The proposed antenna consists of a microstrip-fed slot antenna, a quarter-wavelength coupled-line bandstop filter (BSF), and ...
Yanqun Liu, Peng Zhou, Shunli Li, Hongxin Zhao, Xiaoxing Yin   +4 more
doaj   +1 more source

Freak Edge Waves [PDF]

, 2019
The nonlinear and unsteady dynamics of the edge waves is discussed. Two physical processes: dispersive focusing and nonlinear modulational instability, are studied.
Lechuga, Antonio, WAVES, FREAK
core  

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

FEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri, Ayaka Nagasato‐Ichikawa, Keita Iida, Shuhei Kimura, Akira Imamoto, Mariko Okada   +5 more
wiley   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Programmable radio-frequency calculations in electromagnetic-wave domain

Nature Communications
Information metasurfaces have emerged as pivotal components in next-generation electronic systems. However, current research is mainly focused on the physical structures and system functions, while radio-frequency signal processing and calculation remain
Shao Nan Chen, Zhan Ye Chen, Si Ran Wang, Rui Bi, Jin Feng Kang, Zheng Xing Wang, Zhen Jie Qi, Lijie Wu, Hui Dong Li, Jun Yan Dai, Qiang Cheng, Tie Jun Cui   +11 more
doaj   +1 more source

An extension of the RiMAX multipath estimation algorithm for ultra-wideband channel modeling

EURASIP Journal on Wireless Communications and Networking, 2018
This work presents an extension of the high-resolution RiMAX multipath estimation algorithm, enabling the analysis of frequency-dependent propagation parameters for ultra-wideband (UWB) channel modeling. Since RiMAX is a narrowband algorithm, it does not
Brecht Hanssens, Emmeric Tanghe, Davy P. Gaillot, Martine Liénard, Claude Oestges, David Plets, Luc Martens, Wout Joseph   +7 more
doaj   +1 more source

Convolution operations on time-domain digital coding metasurface for beam manipulations of harmonics

Nanophotonics, 2020
Time-domain digital coding metasurfaces have been proposed recently to achieve efficient frequency conversion and harmonic control simultaneously; they show considerable potential for a broad range of electromagnetic applications such as wireless ...
Zhang Cheng, Yang Jin, Yang Liu Xi, Ke Jun Chen, Chen Ming Zheng, Cao Wen Kang, Chen Mao, Wu Zhan Hao, Chen Jian Feng, Cheng Qiang, Cui Tie Jun   +10 more
doaj   +1 more source

Phase singularities in isotropic random waves [PDF]

, 2000
The singularities of complex scalar waves are their zeros; these are dislocation lines in space, or points in the plane. For waves in space, and waves in the plane (propagating in two dimensions, or sections of waves propagating in three), we calculate ...
Dennis, MR, Berry, MV, Dennis, M.R., Berry, M.V., Berry, M. V., Dennis, M. R.; id_orcid   +5 more
core   +1 more source

Unlocking the potential of cell‐permeable nanobodies for intracellular applications

FEBS Letters, EarlyView.
This review outlines current strategies for delivery of nanobodies into cells and highlights recent examples of functional applications. By addressing and manipulating intracellular targets, these molecules hold great potential for treating cancer, respiratory diseases and neurological disorders, making this a vibrant area of research in the biomedical
Mariona Gené‐Verdés, Luise Franz, Christian P.R. Hackenberger   +2 more
wiley   +1 more source