Results 71 to 80 of about 192,583 (312)

Interleaved zero voltage switching forward converter with less switches

Electronics Letters, 2008
An interleaved zero voltage switching (ZVS) forward converter with less switches is presented. Two forward converters with active clamp technique are adopted in the circuit to achieve interleaved pulse-width-modulation (PWM) operation and load current sharing.
B.R. Lin, W.C. Li
openaire   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Comparative study of macroscopic quantum tunneling in Bi_2Sr_2CaCu_2O_y intrinsic Josephson junctions with different device structures [PDF]

, 2009
We investigated macroscopic quantum tunneling (MQT) of Bi$_2$Sr$_2$CaCu$_2$O$_y$ intrinsic Josephson junctions (IJJs) with two device structures. One is a nanometer-thick small mesa structure with only two or three IJJs and the other is a stack of a few ...
Hamada, K., Kitano, H., Machi, T., Maeda, A., Ohmaki, M., Ota, K., Suzuki, M., Takemura, R., Tanabe, K.   +8 more
core   +2 more sources

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

A hybrid indirect matrix converter immune to unbalanced voltage supply, with reduced switching losses and improved voltage transfer ratio [PDF]

, 2006
Achieving a compact and efficient design of power electronic converters is not a straightforward procedure: minimizing the size of the filter requires a higher switching frequency that causes additional switching losses that will require a larger ...
Klumpner, Christian
core   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

SiC/GaN power semiconductor devices: a theoretical comparison and experimental evaluation under different switching conditions [PDF]

, 2017
The conduction and switching losses of SiC and GaN power transistors are compared in this paper. Voltage rating of commercial GaN power transistors is less than 650V while that of SiC power transistors is less than 1200V.
Acanski M., Chen Z., Chinthavali M., Friedrichs P., Li K., Li K., Li K., Mousa R., Schülting P., Srdic S., Ueda D., Wang J., Wu H.   +12 more
core   +2 more sources

Deterministic Detection of Single Ion Implantation

Advanced Engineering Materials, EarlyView.
Focused ion beam implantation with high detection efficiencies will enable the rapid and scalable fabrication of advanced spin‐based technologies such as qubits. This work presents the detection efficiencies of a wide range of ions implanted into solid‐state hosts, with efficiencies of >90% recorded for ion species and substrate combinations of ...
Mason Adshead, Lok Kan Wan, Maddison Coke, Janet Jacobs, Nicholas F. L. Collins, Mark C. Rosamond, Richard J. Curry   +6 more
wiley   +1 more source

Analysis of Intrinsic Switching Losses in Superjunction MOSFETs Under Zero Voltage Switching

Energies, 2020
Switching losses of power transistors usually are the most relevant energy losses in high-frequency power converters. Soft-switching techniques allow a reduction of these losses, but even under soft-switching conditions, these losses can be significant ...
Maria R. Rogina, Alberto Rodriguez, Diego G. Lamar, Jaume Roig, German Gomez, Piet Vanmeerbeek   +5 more
doaj   +1 more source

Multi-photon transitions between energy levels in a current-biased Josephson tunnel junction [PDF]

, 2002
The escape of a small current-biased Josephson tunnel junction from the zero voltage state in the presence of weak microwave radiation is investigated experimentally at low temperatures.
A. Lukashenko, A. V. Ustinov, A. Wallraff, A. I. Larkin, A. J. Leggett, C. Cohen-Tannoudji, C. K. Bak, D. E. McCumber, M. H. Devoret, T. Duty, T. Fulton, W. C. Stewart   +11 more
core   +2 more sources