Article
Chemistry, Multidisciplinary
Zhou Yu, Yu-Xing Xu, Jun-Qing Su, Petar M. Radjenovic, Ya-Hao Wang, Ju-Fang Zheng, Botao Teng, Yong Shao, Xiao-Shun Zhou, Jian-Feng Li
Summary: By utilizing STM breaking junction and shell-isolated nanoparticle-enhanced Raman spectroscopy, researchers investigated the electron transport and adsorption geometries of 4,4'-bipyridine on Au(111). The surface modification with ionic liquids containing specific cations was found to influence the adsorption configurations of the molecules and their single-molecule conductance, with water addition resulting in significant changes. The dihedral angle between the adsorbed pyridyl ring and the surface was observed to decrease with increasing surface electronic density, enhancing electron donation from the surface to the pyridyl ring.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Robert D. Neal, Zachary R. Lawson, Walker J. Tuff, Kaikui Xu, Vishal Kumar, Matiyas T. Korsa, Maksym Zhukovskyi, Matthew R. Rosenberger, Jost Adam, Jordan A. Hachtel, Jon P. Camden, Robert A. Hughes, Svetlana Neretina
Summary: This paper presents a benchtop process for the formation of large-area periodic arrays of gold nanotriangles, addressing the challenge of scaling up the formation of such arrays. The synthesized gold nanotriangles are epitaxially aligned with the substrate, have increased thickness compared to colloidal syntheses, and exhibit atomically flat surface with close-packed gold atoms, resulting in clear and distinct plasmonic modes.
Article
Chemistry, Multidisciplinary
Ayhan Yurtsever, Linhao Sun, Kaito Hirata, Takeshi Fukuma, Siddharth Rath, Hadi Zareie, Shinji Watanabe, Mehmet Sarikaya
Summary: Understanding the mechanisms of self-organization of short peptides is important for the formation of crystalline biomolecular systems and their practical applications. This study focused on the self-organization process of a graphite-binding dodecapeptide on a graphite surface. The observations revealed the formation of homogeneous and heterogeneous layers, with transient crystalline phases, and provided insights into the surface behavior of short peptides on solids.
Article
Chemistry, Physical
T. V. Pavlova, V. M. Shevlyuga, B. V. Andryushechkin, K. N. Eltsov
Summary: This study reports the removal of individual halogen atoms from Si(100)-2x1-Cl and -Br surfaces in STM. The charge states of DBs formed on the Si surface can be manipulated, allowing for tuning the reactivity of the Cl- and Br-terminated surfaces.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Mengzhou Liao, Paolo Nicolini, Tomas Polcar
Summary: Layered materials, such as MoS2, graphite, h-BN, and mica, have complex origins of friction on their surfaces. A new method combining a two-dimensional friction force microscope technology and a two-dimensional friction model can separate anisotropic and isotropic friction forces on these atomically flat surfaces. The study reveals the existence of elemental hopping combinations and the isotropic component in total friction, providing insights into the properties of individual friction components and potential applications of solid lubricants.
Article
Computer Science, Information Systems
Tingting Jin, Jiajie Lin, Tiangui You, Xiaolei Zhang, Hao Liang, Yifan Zhu, Jialiang Sun, Hangning Shi, Chaodan Chi, Min Zhou, Robert Kudrawiec, Shumin Wang, Xin Ou
Summary: This study successfully achieved the transfer of InP and GaSb thin films onto Si substrates using molecular beam epitaxy and the ion-slicing technique combined with selective chemical etching. The sacrificial layers were completely etched off, leaving high-quality and ultra-smooth epitaxial surfaces without the need for chemical mechanical polishing. This method provides a sustainable and cost-effective approach for Si integration.
SCIENCE CHINA-INFORMATION SCIENCES
(2022)
Article
Computer Science, Interdisciplinary Applications
Guiyun Zhou, Lihui Song, Yi Liu
Summary: This article presents a parallel algorithm for assigning hydrologically correct flow directions in flat regions. By constructing local and global graphs, the algorithm calculates geodesic distances and determines the final flow directions. Experimental results demonstrate its good performance.
COMPUTERS & GEOSCIENCES
(2022)
Article
Chemistry, Physical
Cristiano Calabretta, Viviana Scuderi, Ruggero Anzalone, Marco Mauceri, Danilo Crippa, Annalisa Cannizzaro, Simona Boninelli, Francesco La Via
Summary: This study provides a comprehensive investigation into the effects of nitrogen and aluminum doping on the physical properties of 3C-SiC. It was observed that as the dopant concentration increased, the average length of stacking faults increased while their density decreased.
Article
Chemistry, Multidisciplinary
Aurelie Lecestre, Mickael Martin, Filadelfo Cristiano, Thierry Baron, Guilhem Larrieu
Summary: The paper presents a top-down approach for obtaining III-V nanowires on Si based on a thin III-V epitaxial layer. Through several complementary metal-oxide-semiconductor-compatible fabrication steps, high-quality III-V nanowires with uniform diameter were successfully fabricated. Moreover, detailed studies on the balance between plasma properties and the protective layer formation during reactive-ion etching process were conducted to control the morphology of the nanowires.
Article
Materials Science, Multidisciplinary
Subrata Mandal, Chirantan Das, Subhrajit Sikdar, Basudev Nag Chowdhury, Pintu Singha, Aritra Banerjee, Anupam Karmakar, Sanatan Chattopadhyay
Summary: In this study, a substrate engineered patterned array of square-shaped features of size 1.5 μm x 1.5 μm, comprising of <111>/[100]-planes of p-Si substrate, was successfully developed using electron beam lithography assisted selective anisotropic wet etching. The exposed <111>/[100]-planes were confirmed by FESEM imaging and X-ray diffraction study. The surface engineered Si-substrates have potential applications in electronic, optoelectronic, and bio-sensing devices.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Truong Ba Tai, Jihoon Son, Hyeyoung Shin
Summary: In this study, we theoretically investigated the reaction mechanisms during the atomic layer deposition (ALD) of HfO2 thin film on silicon (Si) surface. We found that controlling the concentration of hydroxyl groups on the surface is crucial for enhancing the activity of the ligand-exchange reactions (LERs) and promoting HfO2-ALD.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Peizhi Wang, Marco Castelli, Fengzhou Fang
Summary: This study investigates the role of plasma-generated photons in the atomic layer etching (ALE) process of chlorinated Si(111) surfaces using density functional theory (DFT) and time-dependent DFT calculations. The results show that chlorination can effectively reduce the energy barrier for removal of the targeted Si atomic layer, and the irradiation of plasma-generated photons further decreases the energy barrier for desorption. These findings provide fundamental understanding and guidance for the application of in-plasma photo-assisted ALE technique.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Salizhan Kylychbekov, Yaran Allamyradov, Zikrulloh Khuzhakulov, Inomjon Majidov, Simran Banga, Justice ben Yosef, Liviu Duta, Ali Oguz Er
Summary: This study investigated the effects of substrate temperature and ablation wavelength/mechanism on the properties of hydroxyapatite (HA) coatings. The results indicated that increasing temperature led to increased crystallinity of the coatings. However, temperatures above 700℃ negatively affected protein adsorption and adhesion properties of the coatings.
Article
Materials Science, Multidisciplinary
Wenxiao Hu, Kai Chen, Tao Tao, Xinxin Yu, Jianjun Zhou, Zili Xie, Bin Liu, Rong Zhang
Summary: This paper presents a study on high-quality (100) single-crystal diamond film grown by microwave plasma chemical vapor deposition (MPCVD). By optimizing the pre-etching process, a smooth surface chemical vapor deposition (CVD) diamond layer with low roughness and high growth rate was achieved, showing potential for high-performance hydrogen-terminal diamond-based electronic devices.
Article
Biochemistry & Molecular Biology
Guo Zhu, Mengxin Han, Baijun Xiao, Zhiyin Gan
Summary: Sputtered Cu/Si thin films were prepared at different sputtering pressures, and their characteristics were analyzed using XRD and AFM. A simulation approach for magnetron sputtering deposition was proposed, which involved MC and MD methods to simulate sputtered atom transport and deposition. The experimental and simulation results were consistent, showing that decreasing the sputtering pressure resulted in smoother Cu thin films and improved crystal quality. This work provides a realistic simulation scheme and theoretical guidance for the preparation of high-quality sputtered films.
Article
Chemistry, Physical
Anqi Song, Erik S. Skibinski, William J. I. DeBenedetti, Amnon G. Ortoll-Bloch, Melissa A. Hines
JOURNAL OF PHYSICAL CHEMISTRY C
(2016)
Article
Chemistry, Physical
William J. I. DeBenedetti, Erik S. Skibinski, Joshua A. Hinckley, Sara B. Nedessa, Melissa A. Hines
JOURNAL OF PHYSICAL CHEMISTRY C
(2016)
Article
Chemistry, Physical
Erik S. Skibinski, Anqi Song, William J. I. DeBenedetti, Amnon G. Ortoll-Bloch, Melissa A. Hines
JOURNAL OF PHYSICAL CHEMISTRY C
(2016)
Article
Chemistry, Physical
William J. I. DeBenedetti, Thomas L. Li, Melissa A. Hines
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Erik S. Skibinski, William J. I. DeBenedetti, Melissa A. Hines
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Physical
William J. I. DeBenedetti, Erik S. Skibinski, Dapeng Jing, Anqi Song, Melissa A. Hines
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Chemistry, Multidisciplinary
Matej Velicky, Gavin E. Donnelly, William R. Hendren, Stephen McFarland, Declan Scullion, William J. I. DeBenedetti, Gabriela Calinao Correa, Yimo Han, Andrew J. Wain, Melissa A. Hines, David A. Muller, Kostya S. Novoselov, Hector D. Abruna, Robert M. Bowman, Elton J. G. Santos, Fumin Huang
Article
Multidisciplinary Sciences
Jan Balajka, Melissa A. Hines, William J. I. DeBenedetti, Mojmir Komora, Jiri Pavelec, Michael Schmid, Ulrike Diebold
Article
Chemistry, Physical
William J. I. DeBenedetti, Melissa A. Hines
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Physical
Alice Galdi, William J. I. DeBenedetti, Jan Balajka, Luca Cultrera, Ivan V. Bazarov, Jared M. Maxson, Melissa A. Hines
JOURNAL OF CHEMICAL PHYSICS
(2020)
Article
Chemistry, Multidisciplinary
Matej Velicky, Gavin E. Donnelly, William R. Hendren, William J. I. DeBenedetti, Melissa A. Hines, Kostya S. Novoselov, Hector D. Abruna, Fumin Huang, Otakar Frank
ADVANCED MATERIALS INTERFACES
(2020)
Article
Physics, Applied
Alice Galdi, Jan Balajka, William J. I. DeBenedetti, Luca Cultrera, Ivan V. Bazarov, Melissa A. Hines, Jared M. Maxson
Summary: Research found that cesium antimonide photocathodes grown on 3C-SiC substrates exhibit larger island size and significantly reduced roughness, with the local electric fields they generate contributing to a decrease in MTE.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
William J. DeBenedetti, Melissa A. Hines
Summary: Fluorination can enhance the photoreactivity of TiO2 nanocrystals and the fluorinated surface exhibits excellent contamination resistance. The rough morphology and isotropic etching of the fluorinated surface indicate the surface instability caused by fluorine and the unique reaction dynamics of XeF2.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Physics, Multidisciplinary
C. T. Parzyck, A. Galdi, J. K. Nangoi, W. J. DeBenedetti, J. Balajka, B. D. Faeth, H. Paik, C. Hu, T. A. Arias, M. A. Hines, D. G. Schlom, K. M. Shen, J. M. Maxson
Summary: Epitaxial thin films of Cs3Sb on 3C-SiC(001) demonstrate higher quantum efficiency, better electronic structure, and permit angle-resolved photoemission spectroscopy measurements.
PHYSICAL REVIEW LETTERS
(2022)
Meeting Abstract
Chemistry, Multidisciplinary
Melissa Hines, Erik Skibinski, William DeBenedetti
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2017)