Results 11 to 20 of about 184,911 (217)

Fabrication and Mechanical Testing of Ultralight Folded Lattice-Core Sandwich Cylinders

open access: yesEngineering, 2020
In this research, two novel folded lattice-core sandwich cylinders were designed, manufactured, and tested. The lattice core has periodic zigzag corrugations, whose ridges and valleys are directed axially or circumferentially.
Wanxin Li   +3 more
doaj   +1 more source

Design and analysis of modified recycling folded cascode amplifier with improved transconductance and slew rate

open access: yesEngineering and Applied Science Research, 2020
To improve the transconductance of operational transconductance amplifier (OTA), various architectures namely recycling folded cascode (RFC), Improved recycling folded cascode (IRFC), modified recycling folded cascode (MRFC) and high recycling folded ...
Sudheer Raja Venishetty   +1 more
doaj   +1 more source

Is the horizon of an eternal black hole really smooth?

open access: yesJournal of High Energy Physics, 2023
We point out that in many eternal black holes, including a Schwarzschild eternal black hole and an eternal black hole in AdS 5, instant folded strings are created in the past wedge and render the region just outside the horizon singular.
Nissan Itzhaki
doaj   +1 more source

Strong Coupling of Folded Phonons with Plasmons in 6H-SiC Micro/Nanocrystals

open access: yesMolecules, 2018
Silicon carbide (SiC) has a large number of polytypes of which 3C-, 4H-, 6H-SiC are most common. Since different polytypes have different energy gaps and electrical properties, it is important to identify and characterize various SiC polytypes.
Yao Huang   +4 more
doaj   +1 more source

Origami-inspired perovskite X-ray detector by printing and folding

open access: yesnpj Flexible Electronics, 2023
X-ray detectors are of pivotal importance for the scientific and technological progress in a wide range of medical, industrial, and scientific applications. Here, we take advantage of the printability of perovskite-based semiconductors and achieve a high
Henning Mescher   +13 more
doaj   +1 more source

Covering folded shapes

open access: yesJournal of Computational Geometry, 2014
Can folding a piece of paper flat make it larger? We explore whether a shape S must be scaled to cover a flat-folded copy of itself. We consider both single folds and arbitrary folds (continuous piecewise isometries \(S\to\mathbb{R}^2\)).
Oswin Aichholzer   +8 more
doaj   +1 more source

Folded double-skin façade (DSF): in-depth evaluation of fold influence on the thermal and flow performance in naturally ventilated channels

open access: yesInternational Journal of Sustainable Energy, 2022
Numerous studies have only focused on vertical air channel performance, but there is still a need to perform in-depth research on the flow and heat transfer characteristics of atypical double skin façade (DSF) such as folded cases.
Javad Ahmadi   +2 more
doaj   +1 more source

String theory and the arrow of time

open access: yesJournal of High Energy Physics, 2021
Time-like linear dilaton triggers, at the classical level, the creation of closed folded strings at an instant. We show that in cosmology these instant folded strings induce negative pressure at no energy cost.
Nissan Itzhaki
doaj   +1 more source

Role of tryptophan side chain dynamics on the Trp-cage mini-protein folding studied by molecular dynamics simulations. [PDF]

open access: yesPLoS ONE, 2014
The 20 residue Trp-cage mini-protein is one of smallest proteins that adopt a stable folded structure containing also well-defined secondary structure elements. The hydrophobic core is arranged around a single central Trp residue.
Srinivasaraghavan Kannan   +1 more
doaj   +1 more source

Through‐Space Conjugated Electron Transport Materials for Improving Efficiency and Lifetime of Organic Light‐Emitting Diodes

open access: yesAdvanced Science, 2022
Thermally stable electron transport (ET) materials with high electron mobility and high triplet state energy level are highly desired for the fabrication of efficient and stable organic light‐emitting diodes (OLEDs).
Pingchuan Shen   +5 more
doaj   +1 more source

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