Article
Chemistry, Multidisciplinary
Joao Otavio Mendes, Andrea Merenda, Karen Wilson, Adam Fraser Lee, Enrico Della Gaspera, Joel van Embden
Summary: The growth of (001) oriented antimony chalcogenide thin films can be controlled by tuning the substrate nanostructure, which is crucial for enhancing the performance of these films.
Article
Materials Science, Multidisciplinary
Ray-Hua Horng, Apoorva Sood, Siddharth Rana, Niall Tumity, Fu-Gow Tarntair, Catherine Langpoklakpam, Hao-Chung Kuo, Jitendra Pratap Singh
Summary: Conductive β-Ga2O3 epilayers grown on the sapphire substrate using MOCVD were studied by Si-ion implanted. A metal-insulator-semiconductor diode (MISD) was fabricated using undoped and Si-implanted β-Ga2O3 epitaxial layer. The electrical and carrier transport properties of different MISD with different distance between cathode and anode contact were investigated.
MATERIALS TODAY ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
T. M. Aper, F. K. Yam, K. G. Saw, Khi Poay Beh, Khaled M. Chahrour
Summary: In this study, indium oxide nanostructured films were synthesized using hydrogen assisted atmospheric pressure chemical vapor deposition technique at different deposition temperatures. The films' surface morphology, crystallinity, and optical properties were characterized, and their photoelectrochemical (PEC) activity was investigated. The sample grown at 950 degrees C exhibited optimal PEC performance, with high photocurrent density, incident photon to current conversion efficiency, and applied bias to photon conversion efficiency. The superior PEC performance of the sample was attributed to the film composition, crystallinity, bandgap reduction, flat band potential, and charge carrier density.
RESULTS IN PHYSICS
(2021)
Review
Chemistry, Multidisciplinary
Shaohua Li, Decai Ouyang, Na Zhang, Yi Zhang, Akshay Murthy, Yuan Li, Shiyuan Liu, Tianyou Zhai
Summary: This review focuses on the use of substrate engineering strategies for the controlled growth of large-scale 2D transition metal dichalcogenides (TMDs). It provides insights into the interaction between TMDs and substrates and summarizes the effects of various substrate engineering approaches on the growth of 2D TMDs. The review also discusses the opportunities and challenges of substrate engineering for the future development of 2D TMDs.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Xiucai Sun, Xiaoting Liu, Zhongti Sun, Xintong Zhang, Yuzhu Wu, Yeshu Zhu, Yuqing Song, Kaicheng Jia, Jincan Zhang, Luzhao Sun, Wan-Jian Yin, Zhongfan Liu
Summary: This study reveals the importance of vapor catalysis in superclean graphene growth through density functional theory calculations, an ideal gas model, and a designed experiment. The study finds that the vapor mainly consists of Cui clusters, which have a significant impact on graphene growth. DFT calculations show that Cu clusters exhibit strong capabilities for adsorption, dehydrogenation, and decomposition, providing a sufficient supply of active carbon atoms for rapid graphene growth. Experimental validation confirms that increasing the amount of Cu vapor improves the growth rate and surface cleanliness of graphene.
Article
Materials Science, Multidisciplinary
Takaaki Sakai, Tohru Kato, Yohei Tanaka, Takashi Goto
Summary: This study investigated the application of LCVD to deposit a dense YSZ film on a porous Ni metal/YSZ substrate at a low temperature. The YSZ film had a columnar structure and small grain sizes. When used as an electrolyte in SOFC, stable power generation was observed, but with lower than theoretical open circuit voltages and higher ohmic loss, possibly due to crack formation in the film. The study also discussed the reason for crack formation.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Physics, Applied
Jiepeng Song, Chun Li, Qiuyu Shang, Yuxuan Ke, Liyun Zhao, Yin Liang, Li Zhang, Qing Zhang
Summary: In this study, millimeter-scale single-crystalline CsPbBr3 microplatelets were fabricated on a SiO2/Si substrate using chemical vapor deposition. The CsPbBr3 microplatelets showed strong green emission at room temperature with superior photo-stability and excitonic features. Whispering-gallery-mode lasing was achieved from microdisks fabricated with focused ion beam, indicating the great potential of CsPbBr3 microplatelets for Si-based photonic devices.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Review
Chemistry, Multidisciplinary
Peng-Xiang Hou, Feng Zhang, Lili Zhang, Chang Liu, Hui-Ming Cheng
Summary: The FCCVD is an important technique for synthesizing high-quality CNTs with various morphologies, offering advantages of simplicity, controllability, and scalability. Researchers review the controlled growth, properties, and applications of CNTs, discussing key challenges and prospects for the future.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Weiyang Liu, Siwei Luo, Xiang Qi, Gencai Guo, Jun Li, Han Tang, Xu Li, Xixi Huang, Zhiyuan Tang, Jianxin Zhong
Summary: Trilayer MoS2 with a twist angle of 12 degrees was successfully fabricated using optimized vapor deposition, and it was found that the twist has a significant influence on the optical properties of MoS2, resulting in exotic optical properties. Regional differences were observed in the interlayer coupling, inversion symmetry, and exciton behavior of the twist region, providing a new approach for designing twist and exploring the influence of twist on the structures of few-layer 2DMs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Anushka Bansal, Maria Hilse, Benjamin Huet, Ke Wang, Azimkhan Kozhakhmetov, Ji Hyun Kim, Saiphaneendra Bachu, Nasim Alem, Ramon Collazo, Joshua A. Robinson, Roman Engel-Herbert, Joan M. Redwing
Summary: Under high temperature hydrogen atmosphere, the deposition of hexagonal boron nitride (hBN) on C-plane and A-plane sapphire substrates have different effects. Compared to C-plane, A-plane sapphire provides a more stable substrate option for high quality hBN growth.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Multidisciplinary
Yu Qiao, Weihan Li, Shifei Chen, Xinchang Wang
Summary: This study explores the method of using K-type thermocouples for contact measurement under complex working conditions, taking hot filament chemical vapor deposition as an example. The optimal thermocouple installation scheme is screened and applied to actual deposition experiments, verifying its accuracy. This scheme can be applied to temperature measurement under similar complex conditions.
Article
Chemistry, Physical
Chamseddine Bouhafs, Sergio Pezzini, Fabian R. Geisenhof, Neeraj Mishra, Vaidotas Miseikis, Yuran Niu, Claudia Struzzi, R. Thomas Weitz, Alexei A. Zakharov, Stiven Forti, Camilla Coletti
Summary: The study successfully synthesized rhombohedral graphene with a thickness of up to 9 layers, with alternating crystal domains identified in Raman spectroscopy. Microscopic and spectroscopic analyses suggest that rhombohedral-stacking formation is correlated to underlying copper step-bunching.
Article
Materials Science, Multidisciplinary
Mattia Pierpaoli, Miroslaw Sawczak, Anna Dettlaff
Summary: Carbon nanostructured films were synthesized by chemical vapor deposition on stainless steel sheets, forming iron and chromium oxide layers between the steel and carbonaceous layer. Different synthesis temperatures resulted in varied morphologies and densities of carbon microspheres, impacting the electrochemical behavior. Nanostructured carbon coatings exhibited better corrosion resistance than raw stainless steel.
Article
Chemistry, Physical
Gulyaim Sagandykova, Piotr Piszczek, Aleksandra Radtke, Radik Mametov, Oleksandra Pryshchepa, Dorota Gabrys, Mateusz Kolankowski, Pawel Pomastowski
Summary: Mass spectrometric techniques are valuable tools for studying sample composition. This work introduces a new approach using laser desorption ionization (LDI) plates prepared through chemical vapor deposition (CVD) for improved sensitivity and stability in detecting low molecular weight compounds. The use of silver nanostructured substrates shows promise in various applications, including molecular profiling and targeted analysis of small biomolecules.
Article
Physics, Multidisciplinary
Jia-Jun Ma, Kang Wu, Zhen-Yu Wang, Rui-Song Ma, Li-Hong Bao, Qing Dai, Jin-Dong Ren, Hong-Jun Gao
Summary: A novel two-step ambient pressure chemical vapor deposition (CVD) pathway has been reported to grow high-quality MoS2 monolayer on the SiO2 substrate with large crystal size. Electronic information inferred from the four-probe scanning tunneling microscope (4P-STM) image explains the threshold voltage variations observed, while direct van der Pauw transport also confirms its relatively high carrier mobility.
Article
Materials Science, Multidisciplinary
Jiaxin Yan, Ashutosh Rath, Hongyu Wang, Shu Hearn Yu, Stephen J. Pennycook, Daniel H. C. Chua
MATERIALS RESEARCH LETTERS
(2019)
Article
Chemistry, Multidisciplinary
Zakaria M. Abd El-Fattah, Vahagn Mkhitaryan, Jens Brede, Laura Fernandez, Cheng Li, Qiushi Guo, Arnab Ghosh, Alvaro Rodriguez Echarri, Doron Naveh, Fengnian Xia, J. Enrique Ortega, F. Javier Garcia de Abajo
Article
Chemistry, Physical
Sushanta K. Das, Subash Chandra Sahu, Arnab Ghosh, Suddhasatwa Basu, Brahmananda Chakraborty, Bikash Kumar Jena
Article
Chemistry, Physical
Zhen Quan Cavin Ng, Ashutosh Rath, Sing Teng Chua, Shun Okano, Andrew T. S. Wee, Stephen J. Pennycook, Ken Okano, Daniel H. C. Chua
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Multidisciplinary Sciences
Yunshan Zhao, Xiangjun Liu, Ashutosh Rath, Jing Wu, Baowen Li, WuXing Zhou, Guofeng Xie, Gang Zhang, John T. L. Thong
SCIENTIFIC REPORTS
(2020)
Article
Nanoscience & Nanotechnology
Suman Mandal, Ajoy Mandal, Gourhari Jana, Samik Mallik, Satyajit Roy, Arnab Ghosh, Pratim Kumar Chattaraj, Dipak K. Goswami
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
Sushanta K. Das, Subash Chandra Sahu, Arnab Ghosh, Bikash Kumar Jena
Article
Chemistry, Multidisciplinary
Soumya Sarkar, Sinu Mathew, Sandhya Chintalapati, Ashutosh Rath, Majid Panahandeh-Fard, Surajit Saha, Sreetosh Goswami, Sherman Jun Rong Tan, Kian Ping Loh, Mary Scott, Thirumalai Venkatesan
Article
Chemistry, Physical
Jiaxin Yan, Ashutosh Rath, Hongyu Wang, Zhen Quan Cavin Ng, Stephen J. Pennycook, Daniel H. C. Chua
Summary: Internal cooling exacerbates scarce energy supply, making thermal shielding material a prospective solution to reduce energy consumption. A combination of magnetron sputtering and chemical vapor deposition was utilized to fabricate efficient, transparent, and direct substrate bonding tungsten suboxide thermal shield. The study found that W17O47 nano-needles performed better in terms of thermal shielding, reflecting and absorbing near-infrared light while allowing visible spectrum transmission, resulting in a 5 degrees C overall passive cooling effect.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Sol Lee, Joong-Eon Jung, Han-gyu Kim, Yangjin Lee, Je Myoung Park, Jeongsu Jang, Sangho Yoon, Arnab Ghosh, Minseol Kim, Joonho Kim, Woongki Na, Jonghwan Kim, Hyoung Joon Choi, Hyeonsik Cheong, Kwanpyo Kim
Summary: A new hexagonal polymorph, gamma-GeSe, has been synthesized from the family of IV-VI monochalcogenides, with high electrical conductivity and potential for constructing vertical van der Waals heterostructures.
Article
Chemistry, Physical
Arnab Ghosh, Himanshu Saini, Arijit Sarkar, Puspendu Guha, Aneeya K. Samantara, Ranjit Thapa, Suman Mandal, Ajoy Mandal, J. N. Behera, Samit K. Ray, Dipak K. Goswami
Summary: Graphitic carbon nitride (g-C3N4) has emerged as a potential alternative in photocatalysis, with studies showing the ability to modulate its optical/electronic properties through nitrogen-vacancy and hydrogen substitution. Different variants of g-C3N4 samples demonstrated specific characteristics, such as high photoluminescence and smaller bandgap, leading to applications in light-emitting devices and efficient broadband photodetection. The heterojunction devices showed improved performance due to reduced carrier recombinations and broadened absorption regime.
APPLIED SURFACE SCIENCE
(2021)
Article
Electrochemistry
Shu Hearn Yu, Pranjal Kumar Gogoi, Ashutosh Rath, Haiwen Dai, Zhen Quan Cavin Ng, Kazu Suenaga, Stephen J. Pennycook, Daniel H. C. Chua
Summary: This study highlights the significance of Controlled Surface Sulfidation (CSS) for the hydrogen evolution reaction on bimetallic NiMoO4 microcuboids supported on Ni foam. Notably, CSS-NiS2/MoS2 electrode demonstrates superior performance over FS-NiS2/MoS2 with lower overpotentials and higher current densities, indicating the potential of CSS as an effective strategy to modulate the electrochemical properties of materials for energy storage and conversion applications.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Imran Uddin, Shaik M. Abzal, Kurapati Kalyan, Sailakshmi Janga, Ashutosh Rath, Rajkumar Patel, Deepak K. Gupta, T. R. Ravindran, Hira Ateeq, Mohd Sajid Khan, Jatis K. Dash
Summary: In this study, starch-stabilized bismuth sulfide nanoparticles were synthesized and characterized. The nanoparticles showed stable properties, quasispherical shape, and inhibitory effects on bacterial strains.
Article
Materials Science, Multidisciplinary
Siddharth Sradhasagar, Sagar Mallick, Ashutosh Rath, Soobhankar Pati, Amritendu Roy
Summary: This study reports the effect of Fe3+ doping at the Ti4+ sites and secondary phases on the ionic conductivity of NASICON structured lithium titanium phosphate (LiTi2(PO4)3). Li1+xTi2-x-Fex(PO4)3 (x = 0.0, 0.1 and 0.2) was synthesized and the results showed that the ionic conductivity of the samples changed due to the alteration of ion conduction paths upon doping.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Zhen Quan Cavin Ng, Ashutosh Rath, Andrew T. S. Wee, Stephen J. Pennycook, Daniel H. C. Chua
ACS APPLIED NANO MATERIALS
(2019)