Oxygen-defect-dependent ferromagnetism and strain modulation in free-standing two-dimensional TiO2 monolayers

2018 ◽  
Vol 20 (42) ◽  
pp. 27176-27184 ◽  
Author(s):  
Lifen Wang ◽  
Gang Zhou ◽  
Yun Shan ◽  
Zhichun Huang ◽  
Lizhe Liu
Keyword(s):  
Magnetic Behavior ◽  
Two Dimensional ◽  
Oxygen Defect ◽  
Free Standing ◽  
Oxygen Defects ◽  
Strain Modulation ◽  
External Strain

In TiO2 monolayers, magnetic behavior can be generated by oxygen defects and can be regulated by external strain.

scholarly journals A First-Principle Study of Monolayer Transition Metal Carbon Trichalcogenides

2021 ◽  
Author(s):  
Muhammad Yar Khan ◽  
Yan Liu ◽  
Tao Wang ◽  
Hu Long ◽  
Miaogen Chen ◽  
...  
Keyword(s):  
Phonon Dispersion ◽  
Magnetic Ordering ◽  
Dimensional Structure ◽  
First Principle ◽  
Two Dimensional ◽  
Biaxial Strain ◽  
Half Metallic ◽  
First Principle Calculations ◽  
Potential Applications ◽  
External Strain

AbstractMonolayer MnCX3 metal–carbon trichalcogenides have been investigated by using the first-principle calculations. The compounds show half-metallic ferromagnetic characters. Our results reveal that their electronic and magnetic properties can be altered by applying uniaxial or biaxial strain. By tuning the strength of the external strain, the electronic bandgap and magnetic ordering of the compounds change and result in a phase transition from the half-metallic to the semiconducting phase. Furthermore, the vibrational and thermodynamic stability of the two-dimensional structure has been verified by calculating the phonon dispersion and molecular dynamics. Our study paves guidance for the potential applications of these two mono-layers in the future for spintronics and straintronics devices.

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...

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.

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

Preparation of a two-dimensional flexible MnO2/graphene thin film and its application in a supercapacitor

2016 ◽  
Vol 4 (27) ◽  
pp. 10618-10626 ◽  
Author(s):  
Zhimin Li ◽  
Yufeng An ◽  
Zhongai Hu ◽  
Ning An ◽  
Yadi Zhang ◽  
...  
Keyword(s):  
Thin Film ◽  
Spin Coating ◽  
Hydrothermal Process ◽  
Graphene Film ◽  
Two Dimensional ◽  
Supercapacitor Electrode ◽  
Free Standing

A novel two-dimensional (2D) free standing and flexible MnO2/graphene film (MGF) supercapacitor electrode is successfully fabricated by a spin-coating and hydrothermal process.

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