Results 91 to 100 of about 45,384 (315)

Solution‐Processed Two‐Dimensional Indium Oxide on Sodium‐Embedded Alumina for Reconfigurable Optoelectronic Synaptic Transistors

Advanced Functional Materials, EarlyView.
Wafer‐scale two‐dimensioanl In2Se3 oxidized into InOx on sodium‐embedded beta‐alumina enables multifunctional reconfigurable electronics. Sodium ions accumulate within distinct spatial distribution under drain‐controlle and gate‐controlled operation. Drain‐control operation gives controllability of ultraviolet‐driven optoelectronic synaptic conductance
Jinhong Min, Yonghyun Albert Kwon, Hyunbin Kim, Jihyun Kim, Myeongjin Jung, Jaewon Heo, Gwang Ya Kim, Vlastimil Mazanek, Zdeněk Sofer, In Soo Kim, Jeong Ho Cho, Hyesung Park, Sang Min Won, Joohoon Kang   +13 more
wiley   +1 more source

A New Dual- Input Hybrid Buck DC-DC Converter

, 2011
The proposed dual input hybrid buck C/hybrid buck L (HBCL) DC-DC converter, is suitable for power conversion in renewable energy, automotive and telecom power systems. It extends the use of the hybrid DC-DC converters in a dual-input structure, with high
Muntean, N., Gavris, M., Cornea, O.
core  

Compact Medium Voltage DC/DC Converter Using Series-Connected Power Devices

, 2020
Medium voltage (MV) DC/DC converters are key equipment for interconnection between DC power lines with different voltage levels in MVDC grids. The Input-series-output-parallel (ISOP) modular MV DC/DC converter is feasible to realize MV to low voltage (LV)
Shaoduo Zheng, Feng Lyu
core   +1 more source

Orbital Geometry‐Governed Response of Pressure‐Tunable Quantum Defects in hBN

Advanced Functional Materials, EarlyView.
Defects in hBN act as ultrasensitive quantum manometers when the energy of the intradefect optical transitions is modified by lattice compression. The orbital geometry of the electron wave functions governs how electron hopping and Coulomb interactions react uniquely to the reduction of the van der Waals gap and in‐plane compression, leading to robust ...
Magdalena Grzeszczyk, Danis I. Badrtdinov, Kenji Watanabe, Takashi Taniguchi, Cyrus E. Dreyer, Malte Rösner, Maciej Koperski   +6 more
wiley   +1 more source

A variable DC approach to minimize drivetrain losses in fuel cell marine power systems

, 2019
This paper presents a method of operating a zero-emission power system in marine vessels. The main goal of the proposed method is to reduce losses of drivetrain devices. The power sources considered in this work are proton exchange membrane fuel cell and
Haxhiu, Arber, Kyyrä, Jorma, Jorma Kyyra, Chan, Ricky, Sami Kanerva, Ricky Chan, Kanerva, Sami, Arber Haxhiu   +7 more
core   +1 more source

Power-stage frequency response cancellation of DC-DC converter with digital control [PDF]

, 2010
Recently, the performance of the DSP and FPGA is developed remarkably. So, fully digital control is enabled in switch mode power supplies. However, in many cases, the control system is built by very complicatedly and very difficult theories such as the ...
Mariko Ogawa, Obata, Satoshi, Seiya Abe, Ogawa, Mariko, Masahito Shoyama, Abe, Seiya, Ninomiya, Tamotsu, Toshiyuki Zaitsu, Satoshi Obata, Zaitsu, Toshiyuki, Shoyama, Masahito, Tamotsu Ninomiya   +11 more
core   +1 more source

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

Advanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus, Bradlee J. McIntosh, Lili Vajtai, Anna Nyáry, Sándor H. Sipos, Nirmal J. Ghimire, Ferenc Simon, László Forró, Dávid Beke   +8 more
wiley   +1 more source

Quasi-Resonant Passive Snubber for Improving Power Conversion Efficiency of a DC-DC Step-Down Converter

, 2018
A quasi-resonant passive snubber for the conventional dc-dc step-down converter is proposed. The snubber uses six passive components to achieve a zero-current turn-ON and zero-voltage turn-OFF of the switch, and to suppress the reverse recovery current ...
Kang, Bongkoo, Bongkoo Kang, Choe, Hyung-Jin, Lee, Sang-Hoon, Hyung-Jin Choe, Sang-Hoon Lee   +5 more
core   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Closed-Loop Control of Symmetric Switching Sequences for Piezoelectric-Resonator-Based DC-DC Converters

IEEE Open Journal of Power Electronics
Piezoelectric Resonators (PRs) are promising alternative passive components for power conversion, offering high power density, high efficiency, and the opportunity to replace bulky inductors.
Mustapha Touhami, Jessica D. Boles
doaj   +1 more source