scholarly journals Surface passivated and encapsulated ZnO atomic layers by high-κ ultrathin MgO layers

Nanoscale ◽  
2019 ◽  
Vol 11 (26) ◽  
pp. 12502-12506
Author(s):  
C. E. Ekuma ◽  
S. Najmaei ◽  
M. Dubey
Keyword(s):  
Physical Properties ◽  
Surface Passivation ◽  
Van Der Waals ◽  
Materials By Design ◽  
Vertically Aligned ◽  
Van Der Waals Materials ◽  
Mgo Layers

Atomically transparent vertically aligned ZnO-based van der Waals materials have been developed by surface passivation and encapsulation with atomic layers of MgO using materials by design, and their physical properties have been investigated.

Layer-Dependent Ferroelectricity in 2H-Stacked Few-Layer α-In2Se3

2021 ◽  
Author(s):  
Baohua Lv ◽  
Zhi Yan ◽  
Wuhong Xue ◽  
Ruilong Yang ◽  
Jiayi Li ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Physical Properties ◽  
Magnetic Order ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Van Der Waals Materials

Atomically thin two-dimensional (2D) van der Waals materials have exhibited many exotic layer-dependent physical properties including electronic structure, magnetic order, etc. Here, we report a striking even-odd layer dependent oscillation...

Two-dimensional topological insulators exfoliated from Na3Bi-like Dirac semimetals

2021 ◽  
Author(s):  
Xiaoqiu Guo ◽  
Ruixin Yu ◽  
Jingwen Jiang ◽  
Zhuang Ma ◽  
Xiuwen Zhang
Keyword(s):  
Physical Properties ◽  
Epitaxial Growth ◽  
Topological Insulators ◽  
2D Materials ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Dirac Semimetals

Topological insulation is widely predicted in two-dimensional (2D) materials realized by epitaxial growth or van der Waals (vdW) exfoliation. Such 2D topological insulators (TI’s) host many interesting physical properties such...

Chemical Pressure Boost Record‐High Superconductivity in van der Waals Materials FeSe 1− x S x

2021 ◽  
pp. 2102917
Author(s):  
Ruijin Sun ◽  
Shifeng Jin ◽  
Jun Deng ◽  
Munan Hao ◽  
Xin Zhong ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Chemical Pressure ◽  
Van Der Waals Materials

scholarly journals Carrier-capture-assisted optoelectronics based on van der Waals materials to imitate medicine-acting metaplasticity

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Qianfan Nie ◽  
Caifang Gao ◽  
Feng-Shou Yang ◽  
Ko-Chun Lee ◽  
Che-Yi Lin ◽  
...  
Keyword(s):  
Weight Change ◽  
Synaptic Weight ◽  
Van Der Waals ◽  
Low Frequency ◽  
Photonic Devices ◽  
Frequency Noise ◽  
Carrier Capture ◽  
Electronic Engineering ◽  
Neural Simulation ◽  
Van Der Waals Materials

AbstractRecently, researchers have focused on optoelectronics based on two-dimensional van der Waals materials to realize multifunctional memory and neuron applications. Layered indium selenide (InSe) semiconductors satisfy various requirements as photosensitive channel materials, and enable the realization of intriguing optoelectronic applications. Herein, we demonstrate InSe photonic devices with different trends of output currents rooted in the carrier capture/release events under various gate voltages. Furthermore, we reported an increasing/flattening/decreasing synaptic weight change index (∆Wn) via a modulated gate electric field, which we use to imitate medicine-acting metaplasticity with effective/stable/ineffective features analogous to the synaptic weight change in the nervous system of the human brain. Finally, we take advantage of the low-frequency noise (LFN) measurements and the energy-band explanation to verify the rationality of carrier capture-assisted optoelectronics applied to neural simulation at the device level. Utilizing optoelectronics to simulate essential biomedical neurobehaviors, we experimentally demonstrate the feasibility and meaningfulness of combining electronic engineering with biomedical neurology.

scholarly journals Intercorrelated ferroelectrics in 2D van der Waals materials

2021 ◽  
Author(s):  
Yan Liang ◽  
Shiying Shen ◽  
Baibiao Huang ◽  
Ying Dai ◽  
Yandong Ma
Keyword(s):  
Van Der Waals ◽  
Out Of Plane ◽  
Fundamental Phenomenon ◽  
Van Der Waals Materials

2D intercorrelated ferroelectrics, exhibiting a coupled in-plane and out-of-plane ferroelectricity, is a fundamental phenomenon in the field of condensed-mater physics. The current research is based on the paradigm of bi-directional...

van der Waals Epitaxy of InAs Nanowires Vertically Aligned on Single-Layer Graphene

Nano Letters ◽  
2012 ◽  
Vol 12 (3) ◽  
pp. 1431-1436 ◽  
Author(s):  
Young Joon Hong ◽  
Wi Hyoung Lee ◽  
Yaping Wu ◽  
Rodney S. Ruoff ◽  
Takashi Fukui
Keyword(s):  
Van Der Waals ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Inas Nanowires ◽  
Vertically Aligned

2D van der Waals materials for ultrafast pulsed fiber lasers: review and prospect

2021 ◽  
Author(s):  
Yani Zhang ◽  
Zhuo-ying Song ◽  
Dun Qiao ◽  
Xiaohui Li ◽  
Zhe Guang ◽  
...  
Keyword(s):  
Fiber Lasers ◽  
Van Der Waals ◽  
Fast Response ◽  
High Threshold ◽  
Absorption Characteristic ◽  
Saturable Absorption ◽  
Metal Chalcogenides ◽  
Ultrafast Optical ◽  
Van Der Waals Materials ◽  
Pulsed Fiber Lasers

Abstract 2D van der Waals materials are crystals composed of atomic layers, which have atomic thickness scale layers and rich distinct properties, including ultrafast optical response, surface effects, light-mater interaction, small size effects, quantum effects and macro quantum tunnel effects. With the exploration of saturable absorption characteristic of 2D van der Waals materials, a series of potential applications of 2D van der Waals materials as high threshold, broadband and fast response saturable absorbers (SAs) in ultrafast photonics have been proposed and confirmed. Herein, the photoelectric characteristics, nonlinear characteristic measurement technique of 2D van der Waals materials and the preparation technology of SAs are systematically described. Furthermore, the ultrafast pulsed fiber lasers based on classical 2D van der Waals materials including graphene, Transition Metal Chalcogenides (TMCs), Topological Insulators (TIs) and Black Phosphorus (BP) have been fully summarized and analyzed. On this basis, opportunities and directions in this field, as well as the research results of ultrafast pulsed fiber lasers based on the latest 2D van der Waals materials (such as PbO, FePSe3, graphdiyne, bismuthene, Ag2S and MXene etc.), are reviewed and summarized.

Tin diselenide van der Waals materials as new candidates for mid-infrared waveguide chips

Nanoscale ◽  
2019 ◽  
Vol 11 (30) ◽  
pp. 14113-14117 ◽  
Author(s):  
Mengfei Xue ◽  
Qi Zheng ◽  
Runkun Chen ◽  
Lihong Bao ◽  
Shixuan Du ◽  
...  
Keyword(s):  
Near Field ◽  
Van Der Waals ◽  
Building Blocks ◽  
Two Dimensional ◽  
Mid Infrared ◽  
Near Field Imaging ◽  
Van Der Waals Materials ◽  
Field Imaging

Near-field imaging of mid-infrared waveguide in SnSe2 slabs promotes two-dimensional van der Waals materials as building blocks for integrated MIR chips.

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