Results 61 to 70 of about 714 (177)

Spin effects in InAs self-assembled quantum dots

Nanoscale Research Letters, 2011
We have studied the polarized resolved photoluminescence in an n-type resonant tunneling diode (RTD) of GaAs/AlGaAs which incorporates a layer of InAs self-assembled quantum dots (QDs) in the center of a GaAs quantum well (QW).
Brasil Maria, Taylor David, Henini Mohamed, dos Santos Ednilson, Gobato Yara   +4 more
doaj  

Mimicking Silent Synapse Recruitment: A SiOx/Cu‐Pancake Memristive Device For Analog Neuromorphic Computing

Advanced Functional Materials, Volume 36, Issue 63, 6 August 2026.
Electroforming‐free TiN/SiOx/Cu/SiOx/TiN memristive devices exploit pancake‐like Cu nanoparticles embedded in a SiOx double layer to create a heterogeneous Schottky‐barrier landscape. Under bias, oxygen‐vacancy redistribution progressively lowers local barriers and recruits initially inactive Cu‐PC pathways into a parallel conduction ensemble, enabling
Rouven Lamprecht, Ole Gronenberg, Sahitya Yarragolla, Tobias Gergs, Richard Marquardt, Victor Witte, Jürgen Carstensen, George Popkirov, Jan Trieschmann, Lorenz Kienle, Hermann Kohlstedt   +10 more
wiley   +1 more source

Emergence of Negative Differential Resistance Through Hole Resonant Tunneling in GeSn/GeSiSn Double Barrier Structure

IEEE Journal of the Electron Devices Society
We examined the fabrication and the operation of GeSn/GeSiSn resonant tunneling diode (RTD) and demonstrated the observation of negative differential resistance (NDR) at a low temperature through the hole resonant tunneling.
Shigehisa Shibayama, Shuto Ishimoto, Yoshiki Kato, Mitsuo Sakashita, Masashi Kurosawa, Osamu Nakatsuka   +5 more
doaj   +1 more source

Photocontrolled Terahertz Amplified Modulator via Plasma Wave Excitation in ORTD-Gated HEMTs

IEEE Photonics Journal, 2017
This paper theoretically explores photocontrolled terahertz amplified modulator in electron plasma wave optically switched resonant tunneling diode (ORTD) gate high-electron mobility transistor.
Changju Zhu, Luhong Mao, Fan Zhao, Xurui Mao, Weilian Guo   +4 more
doaj   +1 more source

Advancements in Enzymatic Biofuel Cells for Wearable Electrochemical Biosensors: Powering Point‐of‐Care Health Monitoring

Advanced Sensor Research, Volume 5, Issue 8, August 2026.
Advances in enzymatic biofuel cells are highlighted through innovative electrode architectures, enzyme immobilization strategies, and hybrid integration with triboelectric, piezoelectric, and thermoelectric energy harvesters. These emerging approaches improve power output, operational stability, and biocompatibility, advancing self‐powered wearable and
Rashid Khan, Mohammad Abrar Uddin, Yi Jae Lee, Taeil Kim   +3 more
wiley   +1 more source

Resonant-tunneling-diode terahertz oscillator with a cylindrical cavity for high-frequency oscillation

AIP Advances, 2019
We proposed and fabricated resonant-tunneling-diode (RTD) terahertz oscillators integrated with a cylindrical cavity. Oscillation frequency of 3 THz is expected from theoretical analysis.
Ryunosuke Izumi, Takumi Sato, Safumi Suzuki, Masahiro Asada   +3 more
doaj   +1 more source

Resonant Tunneling Diode‐Integrated Terahertz Transceiver Module for Wireless Communications

Advanced Photonics Research
Terahertz bands are essential for next‐generation wireless communications, offering ultrabroad bandwidth and unprecedented data throughput. However, realizing compact, low‐cost, broadband, and efficient terahertz transceiver modules remains challenging ...
Weijie Gao, Nguyen H. Ngo, Daiki Ichikawa, Mingxiang Li, Yuta Inose, Yuki Morita, Hidemasa Yamane, Yoshiharu Yamada, Shuichi Murakami, Yosuke Nishida, Tadao Nagatsuma, Withawat Withayachumnankul, Masayuki Fujita   +12 more
doaj   +1 more source

Stabilizing the Hexacyanotrimethylenecyclopropane Electron Acceptor—Structural and Photophysical Characterization

Angewandte Chemie International Edition, Volume 65, Issue 30, 20 July 2026.
An improved low‐temperature synthesis enables the first comprehensive structural and spectroscopic characterisation of neutral hexacyanotrimethylenecyclopropane (CN6CP). Combined IR/Raman, UV–Vis and ssNMR analyses reveal a deeper understanding of its oxidation‐state‐dependent charge redistribution, σ‐aromaticity of the cyclopropane core, and redox ...
Jan P. Soyka, Alok Mahata, Anja Wiesner, Jennifer Hartfiel, Christian E. Halbig, Katharina J. Franke, Ute Resch‐Genger, Biprajit Sarkar, Siegfried Eigler   +8 more
wiley   +1 more source

All-Graphene Planar Double Barrier Resonant Tunneling Diodes

IEEE Journal of the Electron Devices Society, 2014
In this work, we propose an atomically-thin all-graphene planar double barrier resonant tunneling diode that can be realized within a single graphene nanoribbon.
Feras Al-Dirini, Faruque M. Hossain, Ampalavanapillai Nirmalathas, Efstratios Skafidas   +3 more
doaj   +1 more source

Transition Metal Dichalcogenide Multijunction Solar Cells Toward the Multicolor Limit

Solar RRL, Volume 10, Issue 13, 15 July 2026.
A thermodynamic design framework reveals how transfer‐printable TMD multijunction solar cells approach the multicolor limit. Within the 1.0–2.1 eV TMD bandgap window, a five‐junction ladder nears the efficiency plateau, while radiative efficiency, luminescent coupling, excitonic absorption, and bottom‐cell stability set the practical headroom for van ...
Seungwoo Lee
wiley   +1 more source