Results 91 to 100 of about 27,652 (282)

Superlubricity through graphene multilayers between Ni(111) surfaces [PDF]

open access: yes, 2013
A single graphene layer placed between two parallel Ni(111) surfaces screens the strong attractive force and results in a significant reduction of adhesion and sliding friction.
Cahangirov, S.   +2 more
core   +2 more sources

Engineered Strain in 2D Materials by Direct Growth on Deterministically Patterned Grayscale Topographies

open access: yesAdvanced Science, EarlyView.
ABSTRACT Strain is a proven technique for modifying the bandgap and enhancing carrier mobility in 2D materials. Most current strain engineering techniques rely on the post‐growth transfer of these atomically thin materials from growth substrates to target surfaces, limiting their integration into nanoelectronics.
Berke Erbas   +8 more
wiley   +1 more source

The Influence of Graphene Curvature on Hydrogen Adsorption: Towards Hydrogen Storage Devices

open access: yes, 2013
The ability of atomic hydrogen to chemisorb on graphene makes the latter a promising material for hydrogen storage. Based on scanning tunneling microscopy techniques, we report on site-selective adsorption of atomic hydrogen on convexly curved regions of
Beltram, Fabio   +7 more
core   +1 more source

Halogen‐Bond Coupled Halogenated‐π‐Conjugation Enables Giant Birefringence in Hydrogen‐Bonded Organic Frameworks

open access: yesAdvanced Science, EarlyView.
The perfect crystal packing achieved via the halogen‐bond (XB) coupled halogenated‐π‐conjugation strategy effectively induces an ultrahigh birefringence (Δn = 0.97), which exhibits promising potential in polarization control and phase modulation.
Miao‐Bin Xu   +6 more
wiley   +1 more source

Stimulus‐Induced Self‐Reinforcement in Supramolecular Bamboo Plastics toward Mechanical Robustness and Programmable Shapeability

open access: yesAdvanced Science, EarlyView.
A self‐reinforcement strategy is reported for the fabrication of bamboo plastics utilizing ethanol to induce the supramolecular network reconstruction of cellulose and polyacrylamide molecules. These bamboo plastics exhibit high mechanical strength, excellent thermal stability, resistance to low temperatures, and controllable shapeability.
Jingcai Li   +5 more
wiley   +1 more source

Effect of Sinusoidal Surface Roughness and Energy on the Orientation of Cylinder-Forming Block Copolymer Thin Films

open access: yes, 2018
We explore the relative stability of three possible orientations of cylinder-forming di-block copolymer on a sinusoidally corrugated substrate. The cylinders can be aligned either parallel to the substrate, with their long axis being oriented along or ...
Aissou, Karim   +3 more
core   +3 more sources

Pressure‐Induced Structural and Magnetic Evolution in Layered Antiferromagnet YbMn2Sb2

open access: yesAdvanced Electronic Materials, EarlyView.
Pressure tunes the delicate balance between structure, magnetism, and electronic states in quantum materials. In YbMn2Sb2, high‐pressure X‐ray and neutron diffraction reveal a trigonal‐to‐monoclinic transition near 3.5 GPa, accompanied by unconventional magnetic ordering.
Mingyu Xu   +9 more
wiley   +1 more source

Analysis of Human Head Interaction in Handset Antennas Using Ground Plane Corrugation

open access: yesIEEE Access
This paper presents a novel approach for designing a mobile antenna with a Low Specific Absorption Rate (SAR). First, the relationship between the electric field and the SAR value is constructed based on the Poynting Theorem studied in the near-field ...
Hawraa Moghnieh   +3 more
doaj   +1 more source

Mimicking Life: Autonomous Oscillating Artificial Cilia Driven by Chemical Power

open access: yesAdvanced Intelligent Systems, EarlyView.
The synthesis and motion analysis of chemically actuated, individually autonomous artificial cilia are presented. Driven by an internal chemical reaction, the self‐driven individual cilia require no external stimuli. They undergo periodic oscillatory motion with a 3D beat pattern and exhibit chemotactic shifts, reminiscent of biological systems.
Rajata Suvra Chakrovorty   +2 more
wiley   +1 more source

DETERMINATION OF THE CORRUGATION PARAMETERS AT COMBINED OPERATION OF REDUCTION AND FORMING OF CORRUGATION OF TUBULAR BLANKS

open access: yesАвіаційно-космічна техніка та технологія, 2017
The results of numerical modelling of corrugation forming at combination of reduction and corrugation formation of the tubular blanks are given. There were sequentially modelled initial buckling with symmetrical bulging and further plastic flow.
Володимир Володимирович Борисевич   +1 more
doaj   +1 more source

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