24 papers · ranked by Valyu relevance
Mohammad Abrar Shakil Sejan, Md Habibur Rahman, Md Abdul Aziz, Dong-Sun Kim + 7 more
'Dong-Sun Kim' 'Young-Hwan You' 'Hyoung-Kyu Song' 'Hyunchae Chun' 'Sujan Rajbhandari' 'Feng Feng' 'Sung-Man Kim' 'Joonyoung Kim'] Visible light communication (VLC) has contributed new unused spectrum in addition to the traditional radio frequency communication and can play a significant role in wireless communication.…
Thomas Trevelyan James Sainsbury, Giovanni Diana, Martin Patrick Meyer
Visual neurons can have their tuning properties contextually modulated by the presence of visual stimuli in the area surrounding their receptive field, especially when that stimuli contains natural features. However, stimuli presented in specific egocentric locations may have greater behavioural relevance, raising the…
Jian Wang, Jun Liu, Shuhui Li, Yifan Zhao + 2 more
Orbital angular momentum (OAM), which describes tailoring the spatial physical dimension of light waves into a helical phase structure, has given rise to many applications in optical manipulation, microscopy, imaging, metrology, sensing, quantum science, and optical communications. Light beams carrying OAM feature two…
Baiwei Liu, Anna C. Nobre, Freek van Ede
Covert spatial attention is associated with spatially specific modulation of neural activity as well as with directional biases in fixational eye-movements known as microsaccades. Recently, this link has been suggested to be obligatory, such that modulation of neural activity by covert spatial attention occurs only…
Wai-Yiu Keung, Wing‐Kin Ma
This paper considers the context of multiuser massive MIMO downlink precoding with lowresolution digital-to-analog converters (DACs) at the transmitter. This subject is motivated by the consideration that it is expensive to employ high-resolution DACs for practical massive MIMO implementations. The challenge with using…
Junshan Luo, Wang Fanggang, Shilian Wang
In spatial modulation systems, information bits are retrieved by detecting the active antennas and the modulated symbols. The reliability of the active antenna detection is of vital importance since the modulated symbols tend to be correctly demodulated when the active antennas are accurately identified. In this paper…
Zhangjie Luo, Zhiming Zhang, Junwei Tai, Lei Zhang + 5 more
'Hui Feng Ma' 'Wei Xiang Jiang' 'Qiang Cheng' 'Tie Jun Cui'] Title: Abstract Harmonic generation and utilization are significant topics in nonlinear science. Although the progress in the microwave region has been expedited by the development of time-modulated metasurfaces, one major issue of these devices is the strong…
Li, Shiyuan, Yan, Baojiang + 12 more
—Reconfigurable Intelligent Surface (RIS)-based direct modulation communication systems have garnered significant attention due to their low cost, low power consumption, and baseband-less characteristics. However, these systems face challenges such as the random time-varying coding state of the RIS and the difficulty…
Yong Liang, Gang Wen, Jie Zhang, Simin Li + 6 more
Super-resolution structured illumination microscope (SR-SIM) has been established as a powerful tool for visualizing subcellular dynamics and studying organelle interactions in live cells. However, the interfering Gaussian beams result in a limited and nonuniform field of view (FOV) which hinders its application for…
Dirk van Moorselaar, Stefan Van der Stigchel
The visual system can flexibly adjust attentional deployment to match task demands, but whether observers can proactively modulate the spatial scope of attention based on expectations about upcoming search difficulty remains unclear. According to the zoom lens model, attention can narrow or broaden its spatial extent…
Monika Graumann, Lara A. Wallenwein, Radoslaw M. Cichy
Spatial attention helps us to efficiently localize objects in cluttered environments. However, the processing stage at which spatial attention modulates object location representations remains unclear. Here we investigated this question identifying processing stages in time and space in an EEG and fMRI experiment…
Amrollah Amini, Homayoon Oraizi
Spatio-temporally modulated impedance surfaces can be good candidates for generation of radiating waves with arbitrary eigenstates by breaking momentum and energy conservations. Here, we present a theoretical framework based on the holographic technique and generalized Floquet-wave expansion to analyze…
Kenta Temma, Ryosuke Oketani, Toshiki Kubo, Kazuki Bando + 9 more
Resolution enhancement in structured illumination microscopy is hindered when volumetric samples are observed owing to background signals from out-of-focus planes. In this study, we utilized selective plane illumination and reversibly photoswitchable fluorescent proteins to realize structured illumination within the…
Liheng Bian, Xinrui Zhan, Rong Yan, Xuyang Chang + 2 more
'Jun Zhang'] Computational optics introduces computation into optics and consequently helps overcome traditional optical limitations such as low sensing dimension, low light throughput, low resolution, and so on. The combination of optical encoding and computational decoding offers enhanced imaging and sensing…
Hakimi, Amin, S. Faezeh Mousavi, Amir Nader Askarpour
Mode division multiplexing (MDM) systems leveraging spatial modes carrying orbital angular momentum (OAM) present a promising approach to enhance communication capacity in freespace and fiber-optic networks. Efficient detection of OAM modes is critical for their practical implementation. Spiral phase plates (SPPs) are…
Authors not listed
Laser modification of polymer surfaces is critical in many contexts including self-cleaning materials, microelectronics, and biomedical research. Despite their utility, accessing these modified polymers requires expensive or complex materials and multi-step fabrication, masking, and washing processes. Here, we present…
Bin Chen, Yi Lei, Gabriele Liga, Zhiwei Liang + 3 more
'Alex Alvarado'] Abstract—Shaping modulation formats in multi-dimensional (MD) space is an effective approach to harvest spectral efficiency gains in both the additive white Gaussian noise (AWGN) channel and the optical fiber channel. In the first part of this paper, existing MD geometrically-shaped modulations for…
Authors not listed
This paper formally defines an operational isomorphism between spectral damping in molecular vibronic systems and neuromodulatory control in biological sensory systems. Without asserting causal continuity or physical identity across scales, we show that both domains instantiate the same class of output-selective…
Jungbin Yim, Jinseok Choi, Jeonghun Park, Ian P. Roberts + 1 more
'Namyoon Lee'] Abstract—Inter-beam interference poses a significant challenge in low Earth orbit (LEO) satellite communications due to dense satellite constellations. To address this issue, we introduce spacetime beamforming, a novel paradigm that leverages the spacetime channel vector, uniquely determined by the angle…
Aimee Sheehan, Tatsiana Mikulchyk, Catherine De Castro, Safakath Karuthedath + 7 more
A series of new heavy-atom-free photosensitizers using 2,6-diethoxycarbonyl-BODIPY was designed and synthesized. Photoinduced electron transfer between the BODIPY and meso-aryl subunits followed by the formation of BODIPY triplet excited states via spin-orbit charge transfer intersystem crossing (SOCT-ISC) was studied…
Haoqian Liang, Zhaoxiang Yi, Hongling Ling, Kai Luo + 2 more
'Steve Vanlanduit' 'Gabriele Bolognini'] Space-based gravitational wave detection uses an equilateral triangular satellite constellation with inter-satellite laser heterodyne interferometry to measure displacement variations caused by gravitational waves. Inter-satellite laser communication is critical for data…
Michael Dumelle, Matt Higham, Jay M. Ver Hoef, A. K. M. Anisur Rahman
'A. K. M. Anisur Rahman'] spmodel is an R package used to fit, summarize, and predict for a variety spatial statistical models applied to point-referenced or areal (lattice) data. Parameters are estimated using various methods, including likelihood-based optimization and weighted least squares based on variograms.…
Authors not listed
Defect engineering offers a powerful strategy to modulate polaron delocalization in π-conjugated materials; however, the complex interplay between different types of defects and dopant-induced Coulomb binding remains insufficiently understood. Here, we present a comprehensive theoretical investigation of hole-polaron…
Authors not listed
When producing plant-protein-based meat analogues via high moisture extrusion (HME), the structure of extrudates is determined by complex interactions between ingredient composition and processing conditions. To facilitate consumers in their transition towards a diet higher in plant-based proteins, the food industry…