Article
Multidisciplinary Sciences
Meihui Wang, Ming Huang, Da Luo, Yunqing Li, Myeonggi Choe, Won Kyung Seong, Minhyeok Kim, Sunghwan Jin, Mengran Wang, Shahana Chatterjee, Youngwoo Kwon, Zonghoon Lee, Rodney S. Ruoff
Summary: Restricting the initial growth temperatures used for chemical vapour deposition of graphene on metal foils produces optimum conditions for growing large areas of fold-free, single-crystal graphene, which exhibit highly uniform transport properties.
Article
Chemistry, Physical
N. Medvedev, H. Noei, S. Toleikis, B. Ziaja
Summary: The study found that nonthermal disintegration is the main damage mechanism for a free-standing graphene layer, with charge-induced disintegration prevailing only at high absorbed doses. It was also discovered that femtosecond optical pulses in the soft UV regime can probe the progressing damage.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
E. Alejandra Huitron Segovia, D. Torres-Torres, A. Garcia-Garcia
Summary: Three-layer graphene oxide sheets rich in epoxy and hydroxyl groups were obtained by oxidation and chemical exfoliation and analyzed by free-standing indentations. This work compares the wrinkled surface behavior before and after loading and the relation with the adhesion effect. The mechano-chemical effects between the tip and graphene oxide during free-standing indentation were found to significantly decrease with increasing tip radius. The morphological and chemical characteristics of the sample were determined by scanning electron microscopy and X-ray photoelectron spectroscopy techniques.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Physics, Applied
Weiwei Gong, Shigui Zheng, Zhijuan Zhang, Haidong Wang
Summary: Using a self-prepared individual carbon nanotube (CNT) mechanical force sensor, the study measured the adhesion between CNT and free-standing monolayer graphene and other bulk substrates under the same conditions, confirming the reliability of the experimental data. The results showed that suspended graphene exhibited the largest adhesion to the CNT, attributed to its low bending stiffness and extreme flexibility as an atomically thin layer. The study's main contribution was the experimental demonstration of the unusually high adhesion on suspended graphene.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Yongheng Zhang, Can Wang, Qichao Tian, Qinghao Meng, Junyu Zong, Yi Zhang
Summary: In this study, we found that Gd-intercalated QFMLG has a stronger interface adsorption energy compared to EMLG, which is beneficial for the growth of quasi-monolayer SnSe2 films. We also observed that SnSe2 films grown on Gd-intercalated QFMLG have a quasi-layered growth mode, while SnSe2 films grown on EMLG have an island growth mode.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Rajendra Singh, Daniel Scheinecker, Ursula Ludacka, Jani Kotakoski
Summary: Graphene, the best known 2D material, is prone to corrugations. Factors such as the size of the free-standing area, preparation method, surface contamination, and electron-beam-induced disorder affect the corrugation in graphene.
Article
Chemistry, Multidisciplinary
Mahmoud Mohamed Saad Abdelnabi, Chiara Izzo, Elena Blundo, Maria Grazia Betti, Marco Sbroscia, Giulia Di Bella, Gianluca Cavoto, Antonio Polimeni, Isabel Garcia-Cortes, Isabel Rucandio, Alejandro Morono, Kailong Hu, Yoshikazu Ito, Carlo Mariani
Summary: Functionalization of graphene by incorporating hydrogen isotopes can lead to the opening of an energy gap, making it promising for various applications. Utilizing high-energy electron ionization and ion irradiation enables the production of low defect, high Deuterium (D) loaded graphene, showing potential for large-scale fabrication of semiconducting graphane.
Article
Physics, Applied
Dimitrios Loufakis, James G. Boyd, Jodie L. Lutkenhaus, Dimitris C. Lagoudas
Summary: This study presents a new method to calculate the compressive piezoresistance of films by measuring the change of resistance in situ under tensile and bending stresses. It was found that for reduced graphene oxide (rGO) films, the compressive piezoresistance is much greater than the tensile piezoresistance. This research is expected to be applied in fields that require mechanically reliable, flexible, and highly conductive materials.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Engineering, Mechanical
Abdoullah Namdar
Summary: This study investigates the application of nonlinear numerical simulation for embankment-subsoil seismic assessment, focusing on the effects of multidirectional seismic loads. Comparisons of statistical results show that applying multidirectional seismic loads to embankment-subsoil models yields better quality outcomes for both low-rise and high-rise embankments compared to applying seismic load in a single horizontal direction.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Chemistry, Physical
Mikolaj Golunski, Sviatoslav Hrabar, Zbigniew Postawa
Summary: Through molecular dynamics simulations, the mechanism of molecular ejection from a monolayer of phenylalanine molecules on two-layer graphene due to projectile bombardment is investigated. The angle of incidence is found to have a significant impact on the efficiency of molecular emission.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Shiekh Zia Uddin, Naoki Higashitarumizu, Hyungjin Kim, I. K. M. Reaz Rahman, Ali Javey
Summary: Strain-tunable TMDC monolayers demonstrate enhanced electroluminescence efficiency without efficiency roll-off, providing a promising approach for practical applications of roll-off free optoelectronic devices based on excitonic materials.
Article
Chemistry, Multidisciplinary
Maria Grazia Betti, Ernesto Placidi, Chiara Izzo, Elena Blundo, Antonio Polimeni, Marco Sbroscia, Jose Avila, Pavel Dudin, Kailong Hu, Yoshikazu Ito, Deborah Prezzi, Miki Bonacci, Elisa Molinari, Carlo Mariani
Summary: By exposing fully free-standing nanoporous samples of graphene to atomic hydrogen in ultrahigh vacuum, the researchers achieved an unprecedented level of hydrogenation, converting conductive graphene into a wide gap semiconductor. The experimental results confirmed the theoretical predictions of a stable, double-sided fully hydrogenated configuration without pi states.
Article
Multidisciplinary Sciences
Vikki Anand Varma, Jaskaran Singh, Sujin B. B. Babu
Summary: Synthesizing thin films using self assembly is an important challenge for making engineered materials for applications such as photonics and filtration. In this study, a simple model of prolate ellipsoidal particles with two directional bonds was presented and their phase behavior was examined using Monte Carlo simulation. It was found that anisotropic particles with patches can form two different types of 3D ordered structures, along with a thermodynamically stable monolayer. The phase diagram suggests that the desired 2D superstructure can be achieved through self assembly.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Chemistry, Multidisciplinary
Pariya Nazari, Rainer Baeuerle, Johannes Zimmermann, Christian Melzer, Christopher Schwab, Anna Smith, Wolfgang Kowalsky, Jasmin Aghassi-Hagmann, Gerardo Hernandez-Sosa, Uli Lemmer
Summary: This article introduces a highly sensitive microfiber strain sensor that can detect mechanical deformations in applications with limited space, especially for in situ lithium-ion battery thickness monitoring. The sensor is fabricated using a wet-spinning method with a composite of conductive particles embedded in an elastomer. It shows high strain sensitivity, extremely low strain detection limit (0.00005), and high durability of 10,000 cycles. The real-time thickness change of a Li-ion battery pouch cell during charge and discharge cycles is successfully monitored using this sensor, demonstrating its accuracy and ease of applicability. This work presents a promising approach with the least material complexity for soft microfiber strain gauges.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Hui Yan, Meng Zhang, Shuang Wang, Heng Li, Sandor Kunsagi-Mate, Shougen Yin
Summary: Graphene's exceptional mechanical flexibility and strength make it an ideal platform for strain engineering, allowing for versatile modulation and enhancement of its optical properties. By transferring monolayer graphene onto monodisperse Au nanoparticles, both uniaxial and biaxial strain can be achieved with negligible charge doping. This study examines the phonon frequency and crystallographic orientation of graphene wrinkles under strain, showing significant red shifts in the G and 2D peaks under tensile strain.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Tianxiao Niu, Guoxin Cao, Chunyang Xiong
Article
Chemistry, Physical
Yunpeng Ren, Guoxin Cao
Article
Chemistry, Physical
Hailong Liu, Guoxin Cao
JOURNAL OF PHYSICAL CHEMISTRY C
(2016)
Article
Nanoscience & Nanotechnology
Si Xiong, Guoxin Cao
Article
Chemistry, Physical
Lixin Zhou, Guoxin Cao
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2016)
Article
Multidisciplinary Sciences
Hailong Liu, Guoxin Cao
SCIENTIFIC REPORTS
(2016)
Article
Oceanography
Nirnimesh Kumar, Falk Feddersen
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2017)
Article
Mechanics
Guoxin Cao, Tianxiao Niu
Article
Engineering, Mechanical
Guoxin Cao, Yanwei Liu, Tianxiao Niu
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2018)
Article
Mechanics
Tianxiao Niu, Guoxin Cao, Chunyang Xiong
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2018)
Review
Materials Science, Multidisciplinary
Guoxin Cao, Huajian Gao
PROGRESS IN MATERIALS SCIENCE
(2019)
Article
Chemistry, Physical
Yunpeng Ren, Guoxin Cao
Article
Engineering, Mechanical
Si Xiong, Guoxin Cao
EXTREME MECHANICS LETTERS
(2017)
Article
Materials Science, Multidisciplinary
Liusi Yang, Tianxiao Niu, Hui Zhang, Wenjing Xu, Mingchu Zou, Lu Xu, Guoxin Cao, Anyuan Cao
Review
Astronomy & Astrophysics
Cao GuoXin
SCIENTIA SINICA-PHYSICA MECHANICA & ASTRONOMICA
(2017)