Results 81 to 90 of about 26,518 (213)

Ionogel Actuators: A Review

open access: yesSmartBot, EarlyView.
Ionogels dynamically and functionally couple ionic liquids with polymer networks, enabling multiscale programmable deformation and motion under electrical, magnetic, optical, thermal, humidity, and chemical stimuli. This article systematically elucidates the constituent components, structural design, and multiscale actuation mechanisms of ionogel ...
Dezhou Cao   +5 more
wiley   +1 more source

Transient Analysis of Grounding Systems Associated to Substation Structures under Lightning Strokes

open access: yesJournal of Communications Software and Systems, 2007
In this paper we propose a new formalism for analyzing the transient behavior of grounding systems associated to substation structures (Faraday-cage) under lightning strokesin unsettled regime.
B. Harrat   +4 more
doaj  

Substrate‐Tight Graphene Transmembrane‐nanofluidic Devices

open access: yesSmall, EarlyView.
This study demonstrates that the covalent coupling of a pyrene layer to a silicon nitride substrate using silane and peptide chemistry increases the adhesion of graphene to the substrate and prevents the delamination of graphene. 76.2% of the devices with free‐standing graphene are successful devices for ion transport measurement in 0.1 M HCl ...
Xiaofang Kang   +7 more
wiley   +1 more source

Chebyshev-Type Quadrature Formulas for New Weight Classes

open access: yes, 2011
We give Chebyshev-type quadrature formulas for certain new weight classes. These formulas are of highest possible degree when the number of nodes is a power of 2. We also describe the nodes in a constructive way, which is important for applications.
Vagharshakyan, Armen
core  

TITAN's Digital RFQ Ion Beam Cooler and Buncher, Operation and Performance

open access: yes, 2012
We present a description of the Radio Frequency Quadrupole (RFQ) ion trap built as part of the TITAN facility. It consists of a gas-filled, segmented, linear Paul trap and is the first stage of the TITAN setup with the purpose of cooling and bunching ...
A. Chaudhuri   +63 more
core   +1 more source

Heterogeneous Multilayer Nanopores via Chemically Tuned Dielectric Breakdown for Single‐Molecule Sensing

open access: yesSmall, EarlyView.
A scalable fabrication method based on chemically tuned controlled dielectric breakdown (CT‐CDB) enables heterogeneous multilayer nanopores integrating SiNx with 2D materials such as hBN, MoS2, and graphene. The resulting nanopores exhibit distinct electrokinetic behaviors and low noise, allowing structure‐dependent single‐protein sensing.
Chaoming Gu   +9 more
wiley   +1 more source

Embedded NMR Sensor to Monitor Compressive Strength Development and Pore Size Distribution in Hydrating Concrete

open access: yesSensors, 2013
In cement-based materials porosity plays an important role in determining their mechanical and transport properties. This paper describes an improved low–cost embeddable miniature NMR sensor capable of non-destructively measuring evaporable water loss ...
Floriberto Díaz-Díaz   +4 more
doaj   +1 more source

Thin‐Wall Single‐Crystal Gold Nanoelectrodes toward Advanced Chemical Probing and Imaging

open access: yesSmall, EarlyView.
We present a template‐assisted, non‐self‐limited polyol‐based growth strategy that realizes single‐crystalline, thin‐walled Au UMEs/NEs, as well as multifunctional probes, with high yield (>80%). The method provides precise control over electrode dimensions, from sub‐100 nm to micron‐scale radii and reliably produces long, continuous single‐crystal ...
Milad Sabzehparvar   +6 more
wiley   +1 more source

Empirical consequences of symmetries [PDF]

open access: yes, 2011
`Global' symmetries, such as the boost invariance of classical mechanics and special relativity, can give rise to direct empirical counterparts such as the Galileo-ship phenomenon. However, a widely accepted line of thought holds that `local' symmetries,
Greaves, Hilary, Wallace, David
core   +2 more sources

Combinatorial Synthesis of BaCu2Se2 Thin Films: Effect of Composition on Crystal Structure and Optoelectronic Properties

open access: yesSmall, EarlyView.
The emerging BaCu2Se2 semiconductor compound is synthesized in combinatorial thin film libraries for fast screening of its fundamental properties related to the application in sustainable energy sources. Ba‐rich and Cu‐rich compositions are explored.
Marin Rusu   +16 more
wiley   +1 more source

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