Recent progress and remaining challenges of 2D material-based terahertz detectors

2019 ◽  
Vol 102 ◽  
pp. 103024 ◽  
Author(s):  
Yingxin Wang ◽  
Weidong Wu ◽  
Ziran Zhao
Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 4987
Author(s):  
Jianlong Liu ◽  
Xin Li ◽  
Ruirui Jiang ◽  
Kaiqiang Yang ◽  
Jing Zhao ◽  
...  

Terahertz waves are expected to be used in next-generation communications, detection, and other fields due to their unique characteristics. As a basic part of the terahertz application system, the terahertz detector plays a key role in terahertz technology. Due to the two-dimensional structure, graphene has unique characteristics features, such as exceptionally high electron mobility, zero band-gap, and frequency-independent spectral absorption, particularly in the terahertz region, making it a suitable material for terahertz detectors. In this review, the recent progress of graphene terahertz detectors related to photovoltaic effect (PV), photothermoelectric effect (PTE), bolometric effect, and plasma wave resonance are introduced and discussed.


2019 ◽  
Vol 14 (2) ◽  
pp. 1900240 ◽  
Author(s):  
Baitao Zhang ◽  
Jun Liu ◽  
Cong Wang ◽  
Kejian Yang ◽  
Chaokuei Lee ◽  
...  

2017 ◽  
Vol 53 (1) ◽  
pp. 82-90 ◽  
Author(s):  
Xiao-Peng He ◽  
Yi Zang ◽  
Tony D. James ◽  
Jia Li ◽  
Guo-Rong Chen ◽  
...  

We highlight recent progress from our labs for the development of fluorescent glycoprobes for sensing ions/lectins and targeted detection of intracellular species, including the construction of their 2D material composites for targeted fluorescence imaging and theranostics.


2017 ◽  
Vol 5 (7) ◽  
pp. 3039-3068 ◽  
Author(s):  
Vincent Ming Hong Ng ◽  
Hui Huang ◽  
Kun Zhou ◽  
Pooi See Lee ◽  
Wenxiu Que ◽  
...  

Beyond the inaugural synthesis of multi-layered Ti3C2Txby etching Ti3AlC2with hydrofluoric acid (HF), novel routes with a myriad of reducing agents, etchants and intercalants have since been explored and have added many new members to the two-dimensional (2D) material constellation.


2020 ◽  
pp. 1901066
Author(s):  
Rui Yang ◽  
Jingzhuo Zhou ◽  
Chuang Yang ◽  
Ling Qiu ◽  
Huiming Cheng

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Wei Wang ◽  
Xing Wu ◽  
Jian Zhang

We demonstrate how abreaction corrected transmission electron microscopy (TEM) analysis techniques that are commonly used in nanostructure characterization can be used to study the morphology of graphene and other 2D materials at atomic scale, even subangstrom scale, and evolution of nanostructure and from which we determine the graphene components nanofabrication process. The key contributions of this work are perhaps focused on two areas: (1) recent progress on graphene characterization from the TEM aspect and (2) how the electron beam can be used to fabricate nanoribbon from graphene or similar 2D material.


Author(s):  
Teruo Someya ◽  
Jinzo Kobayashi

Recent progress in the electron-mirror microscopy (EMM), e.g., an improvement of its resolving power together with an increase of the magnification makes it useful for investigating the ferroelectric domain physics. English has recently observed the domain texture in the surface layer of BaTiO3. The present authors ) have developed a theory by which one can evaluate small one-dimensional electric fields and/or topographic step heights in the crystal surfaces from their EMM pictures. This theory was applied to a quantitative study of the surface pattern of BaTiO3).


Author(s):  
Dawn A. Bonnell ◽  
Yong Liang

Recent progress in the application of scanning tunneling microscopy (STM) and tunneling spectroscopy (STS) to oxide surfaces has allowed issues of image formation mechanism and spatial resolution limitations to be addressed. As the STM analyses of oxide surfaces continues, it is becoming clear that the geometric and electronic structures of these surfaces are intrinsically complex. Since STM requires conductivity, the oxides in question are transition metal oxides that accommodate aliovalent dopants or nonstoichiometry to produce mobile carriers. To date, considerable effort has been directed toward probing the structures and reactivities of ZnO polar and nonpolar surfaces, TiO2 (110) and (001) surfaces and the SrTiO3 (001) surface, with a view towards integrating these results with the vast amount of previous surface analysis (LEED and photoemission) to build a more complete understanding of these surfaces. However, the spatial localization of the STM/STS provides a level of detail that leads to conclusions somewhat different from those made earlier.


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