Results 111 to 120 of about 4,253,055 (306)

Electrocatalyst/Semiconductor Interfaces in Photoelectrocatalysts: Mechanistic Analysis of the Impact of Nanoparticle Electrocatalyst Coverage on Performance

open access: yesAdvanced Materials, EarlyView.
Reducing Ni nanoparticle coverage on n‐Si photoanodes enhances photovoltage by promoting thicker interfacial SiOx formation during photoelectrochemical oxygen evolution reaction (OER). Experiments, analytical modeling, and finite‐element simulations reveal that coverage‐dependent chemical interface evolution, rather than geometric effects alone ...
Aarti Mathur, Ahmet Sert, Suljo Linic
wiley   +1 more source

Application of improved cutterhead technology of shield machine in anchor cable zones

open access: yesFrontiers in Earth Science
The shield crossing an anchor cable zone can cause the anchor cable to wrap around the cutter, creating construction problems. To address this issue, we developed an improved cutterhead technology for the shield machine which was successfully used during
Yunhong Lin, Guoxu Cao, Xiaodong Guo
doaj   +1 more source

Resonant Tunneling in Single-Barrier Structure with Prewell [PDF]

open access: yes, 2005
We study resonant tunneling phenomenon in a novel single-barrier structure with a prewell when a dc bias field is applied. First, analytical expressions for the tunneling transmission coefficient and the resonance condition are derived under dc bias ...
濱口, 浩規   +7 more
core  

Resonant-tunneling transmission-line relaxation oscillator

open access: yes, 1997
Experimental and numerical results are presented for a high-frequency oscillator consisting of a resonant-tunneling diode (RTD) series-embedded in a transmission line, one end of which is short circuited and the other end terminated with a load resistor.
J. F. Harvey   +9 more
core   +1 more source

Noise‐Tunable Memristor Enabling Programmable Probabilistic Neurons for Frequency‐Selective Time‐Series Signal Encoding

open access: yesAdvanced Materials, EarlyView.
Memristors offer tunable resistance and intrinsic instability, making them promising tunable noise sources. We propose a spiking‐rate‐programmable probabilistic neuron using a Ru/TaOx/Pt memristor, where resistance‐dependent noise enables frequency‐selective encoding.
Do Hoon Kim   +8 more
wiley   +1 more source

Resonant Tunneling Characteristics in Symmetrical Triple-Barrier Structures with Outer Well [PDF]

open access: yes, 2004
We propose "novel symmetrical triple-barrier structures with outer wells" and analyze theoretically tunneling characteristics for this structure. First, analytical expressions of the transmission coefficient and the resonance condition have been derived.
濱口, 浩規   +11 more
core  

Tailoring Symmetry Breaking in Engineered van der Waals Superlattices

open access: yesAdvanced Materials, EarlyView.
We pioneer a scheme to tailor superpotentials in graphene based on intrinsic substrate electronic orders rather than twist angle. The resulting superpotential folds graphene's Dirac cones to either Γ$\Gamma$ or K‐points, leading to distinct symmetry behaviors.
Keda Jin   +7 more
wiley   +1 more source

Atomistic simulations of tunneling FETs

open access: yes, 2016
© Springer International Publishing Switzerland 2016.With continuous scaling of semiconductor devices, the number of atoms in transistors becomes countable.
Wang, Jian   +7 more
core   +1 more source

Review of Inorganic Separator Engineering for Next‐Generation Lithium–Sulfur Batteries: Compromise or Cornerstone?

open access: yesAdvanced Materials, EarlyView.
Inorganic compound‐modified separators transform lithium–sulfur batteries from passive polysulfide confinement to active reaction‐pathway regulation. A Practical Relevance Index (PRI)‐guided framework bridges interfacial chemistry of inorganic separators with practical constraints, establishing unified design principles for scalable, high‐energy ...
Yuting Qin   +7 more
wiley   +1 more source

Application of Modified Peck Formula for Metro Shield Tunneling Construction inWater-bearing Sandy Soil Layers in Nanchang

open access: yesChengshi guidao jiaotong yanjiu
[Objective] Due to the influence of geological conditions, tunnel burial depth, tunnel diameter, and properties of the overlying soil layer, the Peck formula exhibits significant deviations when applied to the shield tunneling construction in water ...
ZHOU Chenghua   +5 more
doaj   +1 more source

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