Results 81 to 90 of about 8,908,075 (288)
Promising perovskite solar cells for optical wireless power transmission
Scilight, 2020 Widegap CH3NH3PbBr3 solar cells exhibit 20.2% efficiency under blue LEDs, showing potential for optical wireless power transmission.
openaire +1 more source
Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications
Advanced Materials Technologies, EarlyView.Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja +9 more
wiley +1 more source
An Overview of Indoor OFDM/DMT Optical Wireless Communication Systems [PDF]
, 2010 This paper is an overview of indoor OFDM (orthogonal frequency division multiplexing)/DMT (discrete multitone) optical wireless (OW) communication systems. Indoor OW OFDM/DMT systems can be classified into two groups.
Elgala, Hany +3 more
core
Advanced Materials Technologies, EarlyView.Multilayer aerosol jet printed components with a low‐loss, thermally stable dielectric are demonstrated using benzocyclobutene. Ink formulation and in‐line droplet evaporation control support high‐quality, versatile, and stable printing performance. A specialized measurement for low‐loss materials reveals promising microwave properties, which, combined
Md Ramjan Ali +3 more
wiley +1 more source
IEEE Photonics Journal, 2018 In this paper, a 200-Gb/s free-space optical (FSO) wavelength division multiplexing (WDM) transmission architecture based on multiwavelength directly modulated transmitter optical sub-assemblies for 5G wireless networks has been proposed and ...
Zeping Zhao +4 more
doaj +1 more source
Adaptive transmission power control scheme for wireless sensor networks [PDF]
, 2011 Wireless communication is the major energy consumer compared to computation and sensing operations performed by a battery-powered wireless sensor node.
Dixon, M.W., Daabaj, K., Koziniec, T.
core
Free Space Optical Link for Simultaneous Power and 1 Gb/s Data Transmission
, 2021 S.23-24We study the trade-off between power and data transfer for a two-meter wireless gallium-arsenide laser and photovoltaic link. The use of orthogonal frequency-division multiplexing with adaptive bit and power loading results in a peak data rate of ...
Haas, H., Fakidis, J., Helmers, Henning
core +1 more source
Liquid‐Crystal‐Based Reconfigurable Intelligent Surface for 7 GHz Mobile Communication
Advanced Materials Technologies, EarlyView.The glass‐based liquid‐crystal reconfigurable intelligent surface (LC‐RIS) integrates active‐matrix driving and blind‐greedy phase optimization within a 5G‐NR OFDM framework. This enables continuously tunable and autonomous enhancement of wireless coverage. Leveraging the transparency and manufacturability of liquid crystal panels, it is ideally suited
Tien‐Lun Ting +5 more
wiley +1 more source
Joint distribution of polarization-multiplexed UWB and WiMAX radio in PON [PDF]
, 2009 In this paper, the feasibility of the joint distribution of ultra-wideband (UWB) and WIMAX wireless using polarization multiplexing as a coexistence technique is proposed and experimentally demonstrated within the framework of passive optical networks ...
Roberto Llorente +7 more
core +1 more source
Advanced Materials Technologies, EarlyView.Vertically oriented van der Waals MoS2 thin films enable a mechanically programmable crack network for strain sensing. The initial mechanical programming protocol establishes a programmed crack configuration along weak interlayer and interdomain interfaces.
Yinli Wang, Hiroyuki Hirakata
wiley +1 more source