Results 61 to 70 of about 99,897 (293)

Predicting Atomic Charges in MOFs by Topological Charge Equilibration

open access: yesAdvanced Functional Materials, EarlyView.
An atomic charge prediction method is presented that is able to accurately reproduce ab‐initio‐derived reference charges for a large number of metal–organic frameworks. Based on a topological charge equilibration scheme, static charges that fulfill overall neutrality are quickly generated.
Babak Farhadi Jahromi   +2 more
wiley   +1 more source

Development of a new prototype system for measuring the permittivity of dielectric materials

open access: yesThe Journal of Engineering, 2014
A simple prototype for measuring the properties of dielectric materials is introduced in this Letter. A homogeneous dielectric sample placed in a field produced by a nearby antenna will affect the input impedance of the antenna.
Jiajia Jiang, Wen Geyi
doaj   +1 more source

Determination of the Permittivity of Transmission Lines at Milli-Kelvin Temperatures

open access: yesIEEE Access, 2023
Many quantum technologies rely heavily on propagation of RF and microwave signals through devices at cryogenic temperatures, and detailed understanding of materials and signal propagation is therefore key to improving the performance of quantum circuits.
Manoj Stanley   +6 more
doaj   +1 more source

In-situ measurement of the permittivity of helium using microwave NbN resonators

open access: yes, 2008
By measuring the electrical transport properties of superconducting NbN quarter-wave resonators in direct contact with a helium bath, we have demonstrated a high-speed and spatially sensitive sensor for the permittivity of helium. In our implementation a
A. Monfardini   +7 more
core   +3 more sources

A study on the transferable skills of the engineering students at Universiti Tun Hussein Onn Malaysia [PDF]

open access: yes, 2017
The purpose of this study was to identify the students' levels of awareness of the importance of transferable skills and the mastery of the aspects of adaptive, critical thinking, and problem-solving.
Abd Baser, Jamil   +3 more
core   +3 more sources

Atomic‐Scale Light Coupling Control in Ultrathin Photonic Membranes

open access: yesAdvanced Functional Materials, EarlyView.
Ultrathin photonic nanomembranes provide atomic‐scale control over the coupling between incident light and high‐Q photonic modes, enabling angstrom‐level resonance tuning and strong field confinement. When integrated with TMD monolayers, they further yield enhanced light–matter interactions, offering a versatile platform for advancing quantum photonics,
Chih‐Zong Deng   +8 more
wiley   +1 more source

Nanoscale dielectric properties of insulating thin films: From single point measurements to quantitative images [PDF]

open access: yes, 2010
Dielectric relaxation (DR) has shown to be a very useful technique to study dielectric materials like polymers and other glass formers, giving valuable information about the molecular dynamics of the system at different length and time scales.
Alegría, Angel   +6 more
core   +4 more sources

Measurement of Complex Permittivity in Free Space

open access: yesProcedia Engineering, 2015
AbstractThe paper describes the measurement of complex permittivity in free space. It is an advanced non-contact method which is used to find the electromagnetic properties of materials. In this case it involves the materials which are used in aviation technology, especially for hardening the avionics against electromagnetic interference. A specialized
Skočík, Petr, Neumann, Petr
openaire   +2 more sources

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

open access: yesAdvanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan   +6 more
wiley   +1 more source

A computational model for path loss in wireless sensor networks in orchard environments. [PDF]

open access: yes, 2014
A computational model for radio wave propagation through tree orchards is presented. Trees are modeled as collections of branches, geometrically approximated by cylinders, whose dimensions are determined on the basis of measurements in a cherry orchard ...
Anastassiu, Hristos T   +6 more
core   +3 more sources

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