Unit-cell-thick domain in free-standing quasi-two-dimensional ferroelectric material

2021 ◽  
Vol 5 (4) ◽  
Author(s):  
Yuwei Guo ◽  
Berit Goodge ◽  
Lifu Zhang ◽  
Jie Jiang ◽  
Yu Chen ◽  
...  
Keyword(s):  
Ferroelectric Material ◽  
Unit Cell ◽  
Two Dimensional ◽  
Free Standing

Topotactic Growth of Free-Standing Two-Dimensional Perovskite Niobates with Low Symmetry Phase

Nano Letters ◽  
2021 ◽  
Author(s):  
Fei Zhou ◽  
Yang Li ◽  
Xingqi Liao ◽  
Shuren Lin ◽  
Haizeng Song ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Free Standing ◽  
Symmetry Phase ◽  
Low Symmetry

Mechanics of free-standing inorganic and molecular 2D materials

Nanoscale ◽  
2021 ◽  
Author(s):  
Xianghui Zhang ◽  
Andre Beyer
Keyword(s):  
Recent Progress ◽  
Mechanical Characterization ◽  
2D Materials ◽  
Two Dimensional ◽  
Free Standing ◽  
Inorganic As

The discovery of graphene has triggered a great interest in inorganic as well as molecular two-dimensional (2D) materials. In this review, we summarize recent progress in the mechanical characterization of...

Enhanced field emission performance of MXene-TiO2 composite film

Nanoscale ◽  
2021 ◽  
Author(s):  
Bingjun Yang ◽  
Jiangtao Chen ◽  
xiaonan Wu ◽  
Bao Liu ◽  
Lingyang Liu ◽  
...  
Keyword(s):  
Composite Film ◽  
Field Emission ◽  
Two Dimensional ◽  
Field Emission Display ◽  
Free Standing ◽  
Emission Performance ◽  
Field Emitters ◽  
Field Emission Performance

A facile method to produce MXene-TiO2 composite is demonstrated for enhanced field emission display applications. The field emission performance of two-dimensional free-standing and linear-shaped field emitters has been systematically investigated...

A two-dimensional analytical unit cell model for redox flow battery evaluation and optimization

2021 ◽  
Vol 506 ◽  
pp. 230192
Author(s):  
Yunxiang Chen ◽  
Jie Bao ◽  
Zhijie Xu ◽  
Peiyuan Gao ◽  
Litao Yan ◽  
...  
Keyword(s):  
Cell Model ◽  
Unit Cell ◽  
Two Dimensional ◽  
Redox Flow Battery ◽  
Unit Cell Model ◽  
Flow Battery

The Elastic Moduli of Silver Thin Films Measured with a New Microtensile Tester

1991 ◽  
Vol 239 ◽  
Author(s):  
J. Ruud ◽  
D. Josell ◽  
A. L. Greer ◽  
F. Spaepen
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Diffraction Grating ◽  
Strain Measurement ◽  
Elastic Moduli ◽  
Two Dimensional ◽  
Bulk Crystals ◽  
Free Standing ◽  
Tensile Direction ◽  
Silver Thin Films

ABSTRACTA new design for a thin film microtensile tester is presented. The strain is measured directly on the free-standing thin film from the displacement of laser spots diffracted from a thin grating applied to its surface by photolithography. The diffraction grating is two-dimensional, allowing strain measurement both along and transverse to the tensile direction. In principle, both Young's modulus and Poisson's ratio of a thin film can be determined. Ag thin films with strong <111> texture were tested. The measured Young moduli agreed with those measured on bulk crystals, but the measured Poisson ratios were low, most likely due to slight transverse folding of the film that developed during the test.

Irreducible first Brillouin zone for two-dimensional magnonic crystals with asymmetric complex lattices

2021 ◽  
pp. 2150170
Author(s):  
Hui Yang ◽  
Guo-Hong Yun ◽  
Yong-Jun Cao
Keyword(s):  
Brillouin Zone ◽  
Unit Cell ◽  
Square Lattice ◽  
Two Dimensional ◽  
Area Formula ◽  
Irreducible Part ◽  
Full Band ◽  
Magnonic Crystals ◽  
Magnonic Crystal ◽  
Complex Basis

Two-dimensional (2D) magnonic crystal (MC) with an asymmetric complex basis is proposed in this paper, and its band structures are calculated in the whole area of the first Brillouin zone (BZ). This kind of MCs is composed of two different atoms in the unit cell, and the symmetry of the unit cell is broken due to changes in the position of the second atom, so the irreducible part of the BZ is no longer the small area [Formula: see text] for square lattice, and it must be expanded to the whole first BZ. Only by investigating the whole first BZ, can we get the true full band-gap for this kind of MCs.

A Novel Micromechanical Resonator Using Two-Dimensional Phononic Crystal Slab

2011 ◽  
Vol 254 ◽  
pp. 195-198
Author(s):  
Nan Wang ◽  
Fu Li Hsiao ◽  
Moorthi Palaniapan ◽  
Ming Lin Julius Tsai ◽  
Jeffrey B.W. Soon ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Phononic Crystal ◽  
Acoustic Resonance ◽  
Two Dimensional ◽  
Free Standing ◽  
Sensing Applications ◽  
Aln Film ◽  
Digital Transducers ◽  
Square Array ◽  
Quality Factor Q

Two-dimensional (2-D) Silicon phononic crystal (PnC) slab of a square array of cylindrical air holes in a 10μm thick free-standing silicon plate with line defects is characterized as a cavity-mode PnC resonator. Piezoelectric aluminum nitride (AlN) film is deployed as the inter-digital transducers (IDT) to transmit and detect acoustic waves, thus making the whole microfabrication process CMOS-compatible. Both the band structure of the PnC and the transmission spectrum of the proposed PnC resonator are analyzed and optimized using finite element method (FEM). The measured quality factor (Q factor) of the microfabricated PnC resonator is over 1,000 at its resonant frequency of 152.46MHz. The proposed PnC resonator shows promising acoustic resonance characteristics for RF communications and sensing applications.

Two-Dimensional Quantum Transport in Free-Standing InSb Nanosheets

Nano Letters ◽  
2018 ◽  
Vol 19 (1) ◽  
pp. 561-569 ◽  
Author(s):  
Ning Kang ◽  
Dingxun Fan ◽  
Jinhua Zhi ◽  
Dong Pan ◽  
Sen Li ◽  
...  
Keyword(s):  
Quantum Transport ◽  
Two Dimensional ◽  
Free Standing
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