Results 101 to 110 of about 5,542 (248)

Lower bounds in communication complexity and learning theory via analytic methods

open access: yes, 2009
textA central goal of theoretical computer science is to characterize the limits of efficient computation in a variety of models. We pursue this research objective in the contexts of communication complexity and computational learning theory.
Sherstov, Alexander Alexandrovich
core  

Vorticity‐Driven µ‐Platelet Rotation and Selective Packing for Vertical Thermal–Electrical Interconnects

open access: yesAdvanced Functional Materials, EarlyView.
We introduce a capillary‐filtering‐based particle‐filling (CFPF) process that simultaneously forms vertical thermal pathways and electrical vias within µ‐pores. In situ microfluidic analysis reveals that capillary‐driven velocity gradients generate vorticity that governs µ‐platelet rotation and vertical alignment.
Yujin Mun   +11 more
wiley   +1 more source

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan   +9 more
wiley   +1 more source

Long transient oscillations in a class of cooperative cellular neural networks

open access: yes, 2015
The real-time processing capabilities of cellular neural networks (CNNs) are inherently related to the fast convergence time of the solutions toward the asymptotically stable equilibrium points.
Pancioni, Luca   +7 more
core   +1 more source

Controlled Engineering of 2D Alkali‐Iron‐Chloride Compounds and Lateral Quantum Heterostructures Within Confined Graphene Nanoreactors

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a programmable atomic engineering strategy for 2D materials using Å‐scale nanoreactors formed by bilayer graphene (BLG) intercalation. A new class of alkali‐iron‐chloride compounds, along with lateral heterostructures composed of monolayer alkali halides and iron chlorides, is revealed.
Haiming Sun   +6 more
wiley   +1 more source

A Contemporary Study in the Theory of Traveling-Wave Tubes [PDF]

open access: yes, 2018
The traveling-wave tube (TWT) is a widely used amplifier in satellite communications and radar. An electromagnetic signal is fed into one end of the device and is amplified over a distance until it is extracted downstream at the output.
Wong, Patrick
core  

Influence of the tank circuit on the low frequency impedance of an rf-biased R-SQUID

open access: yes, 1984
The dc ‐impedance of an rf‐biased R‐SQUID is studied analytically for the nonhysteretic regime. A mathematical analysis of the intrinsic behavior of an R‐SQUID, including the mutual interaction between the tank circuit and the SQUID loop, is presented ...
Heikki Seppä, Seppä, Heikki
core   +1 more source

Thermally Pre‐Formed Reconfigurable Resistive Random‐Access Memory Crossbar Arrays: A Dual‐Mode Platform for Robust Physically Unclonable Functions and In‐Memory Computing

open access: yesAdvanced Functional Materials, EarlyView.
A reconfigurable RRAM platform utilizing thermally pre‐formed filaments (TPFs) is developed to realize robust hardware security. By exploiting the thermodynamic stochasticity of TPFs, exceptionally reliable physically unclonable functions (PUFs) are achieved.
Seongbin Kwon   +4 more
wiley   +1 more source

Bandgap‐Engineered AlGaAs/GaAs Heterostructures for Wavelength‐Selective Dual‐Polarity Photoelectrochemistry

open access: yesAdvanced Functional Materials, EarlyView.
Bandgap‐engineered AlGaAs/GaAs heterostructures exhibit wavelength‐selective dual‐polarity photoelectrochemistry, switching from photocathodic to photoanodic response depending on excitation wavelength. The polarity transition is governed by band‐selective absorption, built‐in electric‐field‐driven carrier transport, and interfacial charge‐transfer ...
Yukai Mao   +9 more
wiley   +1 more source

QUANTHEM. Data from numerical simulation of integrable quantum circuits. Version 1

open access: yes
The dataset contains data generated in the framework of Horizon Europe ERC QUANTHEM project. The data were obtained from numerical simulation of an integrable quantum circuit (the so-called XXZ integrable quantum circuit) and from numerical evaluation of
Piroli, Lorenzo
core   +1 more source

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