Results 111 to 120 of about 40,531 (305)

Multifunctional Metasurface with PIN Diode Application Featuring Absorption, Polarization Conversion, and Transmission Functions

Micromachines
The objective of this paper is to explore the potential of integrating three distinct functionalities into a thin, single-layer metasurface. Specifically, the study introduces a metasurface design that combines absorption, polarization conversion, and ...
Francisco D. M. Nobre, Thayana M. L. de Sousa, Antônio L. P. S. Campos, Maurício W. B. da Silva   +3 more
doaj   +1 more source

Band-Notched UWB Antenna with Switchable and Tunable Performance

International Journal of Antennas and Propagation, 2016
A band-notched UWB antenna is presented, which can switch between two notch bands and tune the central frequency simultaneously. It is the first time that the switchable and tunable behaviours are combined together in band-notched UWB antennas.
Wei Wu, Yun-Bo Li, Rui-Yuan Wu, Chuan-Bo Shi, Tie-Jun Cui   +4 more
doaj   +1 more source

Processing and characterization of epitaxial GaAs radiation detectors

, 2015
GaAs devices have relatively high atomic numbers (Z=31, 33) and thus extend the X-ray absorption edge beyond that of Si (Z=14) devices. In this study, radiation detectors were processed on GaAs substrates with 110 $\mu\textrm{m}$ - 130 $\mu\textrm{m ...
Arsenovich, T., Gädda, A., Härkönen, J., Junkes, A., Karadzhinova, A., Kostamo, P., Lipsanen, H., Luukka, P., Mattila, M., Nenonen, S., Peltola, T., Riekkinen, T., Tuominen, E., Winkler, A., Wu, X.   +14 more
core   +1 more source

Vat Polymerization 3D Printing for Controlled Drug Release Applications

Advanced Materials Technologies, EarlyView.
ABSTRACT Vat polymerization (VP) 3D printing, a light‐based additive manufacturing technique, has emerged as a promising technique for fabricating complex drug delivery systems with high precision and spatial resolution. This layer‐by‐layer manufacturing process enables the creation of intricate geometries and customizable architectures, which are ...
Hafiz Busari, O. Thompson Mefford, M. Aaron Vaughn   +2 more
wiley   +1 more source

Modeling of Microwave Semiconductor Diodes [PDF]

, 2008
The paper deals with the multi-physical mode-ling of microwave diodes. The electrostatic, drift-diffusion and thermal phenomena are considered in the physical model of the components. The basic semiconductor equati-ons are summarized, and modeling issues
Pokorny, M., Raida, Zbyněk
core   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Very High In‐Plane Magnetic Field Sensitivity in Ion‐Implanted 4H‐SiC PIN Diodes

Advanced Electronic Materials
In this study ion‐implanted lateral 4H‐SiC pin diodes are reported, which show an unexpectedly high room temperature in‐plane magnetic field sensitivity approaching 100 % at 0.5 Tesla.
Hesham Okeil, Tobias Erlbacher, Gerhard Wachutka   +2 more
doaj   +1 more source

A Frequency and Polarization Agile Disc Monopole Wearable Antenna for Medical Applications [PDF]

Radioengineering, 2020
A combined frequency and polarization reconfigurable textile based wearable disc monopole antenna is proposed in this paper. The antenna consists of a disc monopole as the radiator and four PIN diodes for realizing the agility property.
P. Saha, D. Mitra, S. K. Parui
doaj  

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Design of Frequency- and Pattern-Reconfigurable Wideband Slot Antenna

International Journal of Antennas and Propagation, 2018
A wideband slot antenna with frequency- and pattern-reconfigurable characteristics for TD-LTE (3.4–3.8 GHz) and C-band (3.7–4.2 GHz) applications is proposed. The antenna consists of two symmetric slots that are fed by a fork-shaped microstrip line.
Liping Han, Caixia Wang, Wenmei Zhang, Runbo Ma, Qingsheng Zeng   +4 more
doaj   +1 more source