Article
Materials Science, Multidisciplinary
Zijun Zhang, Chenyang Xu, Fuming Deng, Kang Zheng, Zhenhai Guo, Lei Zhang, Yiran Gao
Summary: The study used hot filament chemical vapor deposition to fill the pores on the cobalt removal surface of PCD tools, and maintaining a carbon concentration of about 2% efficiently improved the cutting performance and durability of the tools.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Multidisciplinary Sciences
Yongjiu Yuan, Xin Li, Lan Jiang, Misheng Liang, Xueqiang Zhang, Shouyu Wu, Junrui Wu, Mengyao Tian, Yang Zhao, Liangti Qu
Summary: The authors have developed a maskless ultrafast fabrication method for producing micron-sized micro-supercapacitors. These micro-supercapacitors demonstrate high specific capacitance, voltage windows, energy density, and power density. They can be integrated with other micro devices and have potential for use in various applications.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jaeho Shin, Jihoon Ko, Seongmin Jeong, Phillip Won, Younggeun Lee, Jinmo Kim, Sukjoon Hong, Noo Li Jeon, Seung Hwan Ko
Summary: Researchers have achieved monolithic quasi-3D digital patterning of PDMS using laser pyrolysis, which allows for rapid fabrication of high-quality 2D or 3D PDMS structures and can be applied in microfluidics and biomedical applications.
Article
Chemistry, Physical
Bakhtiar Ali, Han Xu, Dashavir Chetty, Robert T. Sang, Igor Litvinyuk, Maksym Rybachuk
Summary: The degree of laser-induced graphitization in single crystal chemical vapor deposited diamond was studied. The sp(3) phase transitions to sp(2) aromatic crystalline graphitic fraction below a critical fluence, above which amorphous carbon is formed. The increase in fluence leads to a significant increase in the depth of graphitized areas and cleavage of C=O bonds.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Dong Yeong Kim, Thomas J. Smart, Jochen Mannhart, Wolfgang Braun
Summary: This study investigates the use of thermal laser epitaxy (TLE) for growing carbon films on sapphire substrates. The results show that the crystallinity of carbon films can be controlled by the substrate temperature during growth. The study also characterizes the dependence of the growth rate on the power of the source-evaporating laser beam.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Yuanyuan Guo, Quan Wang, Hao Li, Yixun Gao, Xuezhu Xu, Biao Tang, Yao Wang, Bai Yang, Yi-Kuen Lee, Paddy J. French, Guofu Zhou
Summary: In this work, a technology for in situ fluorescent patterning using laser direct writing on cellulose film was developed. The technology allows for adjustable fluorescent intensity and surface microstructure of patterns, simplifies the manufacturing process, and reduces costs. The fabricated fluorescent patterns exhibit excellent anti-counterfeiting performance, optical properties, and acid/base resistance.
Article
Materials Science, Coatings & Films
Frederic Schell, Sabri Alamri, Tobias Steege, Christoph Zwahr, Tim Kunze, Andres Lasagni
Summary: Pulsed lasers can generate microtextures that change the surface properties of materials, allowing for stable wettability. In this study, stainless-steel samples with different surface finishes were textured using nanosecond Direct Laser Interference Patterning, and the wettability transition was analyzed by monitoring water contact angle. The results showed a transition from hydrophilic to hydrophobic and demonstrated the effect of surface roughness on the final wetting state.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Matteo Mastellone, Alessandro Bellucci, Marco Girolami, Valerio Serpente, Riccardo Polini, Stefano Orlando, Antonio Santagata, Elisa Sani, Frank Hitzel, Daniele M. Trucchi
Summary: This study demonstrates, for the first time, the achievement of two-dimensional laser-induced periodic surface structures with deep-subwavelength periodicity on diamond surfaces. The method involves using two temporally delayed and cross-polarized femtosecond-laser pulses to achieve distinctive nanotexturing, which can be controlled by varying the number of pulses. The effective treatment of large areas of diamond surfaces under scanning mode leads to significantly enhanced absorptance in the visible range, paving the way for the development of metasurfaces for future diamond-based optoelectronic devices.
Article
Multidisciplinary Sciences
Nikolai Schroeder, Fabian Nyenhuis, Robert Baumann, Lucinda Mulko, Thomas Kiedrowski, Johannes Albert L'huillier, Andres Fabian Lasagni
Summary: The study revealed that adjusting the substrate temperature can significantly impact the structure depth and morphology of steel surfaces, resulting in different types of LIPSS being produced.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Jianchao Zhai, Quanli Zhang, Yandan Zhu
Summary: This study investigates the influence of laser parameters on the surface characteristics of chemical vapor deposition (CVD) diamond. Simulation is used to establish temperature field, thermal stress field, and phase field to explain the deterioration of diamond surface during laser machining. The results show that high temperature induced by laser and the local anisotropy of polycrystalline CVD diamond contribute to the uneven removal of materials, resulting in irregular gullies on the machined surface. The thermal effect of picosecond laser leads to the gasification of a large amount of material, with less accumulation in the processing area. Graphitization of diamond is induced in the groove, with less graphitization at the edge. Additionally, the CVD diamond surface undergoes oxidation and nitridation during laser ablation. By optimizing the machining parameters based on surface morphology and three-dimensional topography, different surface microstructures can be fabricated on CVD diamond.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Avik Samanta, Wuji Huang, Martell Bell, Scott K. Shaw, Nicholas Charipar, Hongtao Ding
Summary: An innovative laser-assisted functionalization method is proposed to fabricate a superhydrophobic-superhydrophilic patterned surface on a large-area metal alloy, with two different strategies demonstrated. Adjusting laser parameters allows for surface topography patterning and anti-reflection surface properties to be achieved. This method decouples extreme wettability from surface topography, showing simplicity, robustness, and feasibility.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Yunhai Liu, Lei Chen, Bangzheng Jiang, Yangqin Liu, Bin Zhang, Chen Xiao, Junyan Zhang, Linmao Qian
Summary: The low friction behavior of hydrogenated diamond-like carbon (H-DLC) films under reciprocating and unidirectional motions differs significantly. Reciprocating sliding reduces the friction coefficient while increasing surface wear compared to unidirectional sliding. The uniformity and structure of the transfer layer and worn surface strongly depend on the sliding motions.
Article
Chemistry, Physical
Bakhtiar Ali, Han Xu, Robert T. Sang, Igor V. Litvinyuk, Maksym Rybachuk
Summary: The optimal conditions for converting the tetrahedral sp3 phase of diamond into an aromatic sp2 phase with high crystallinity were investigated using an ultra-short femto-second pulsed laser. The highest conversion efficiency was achieved at an energy density of 1.2 J/cm2 and 32,000 pulses. The results also showed the formation of carbyne and carbonyl bonds during the phase transition.
Article
Multidisciplinary Sciences
Yuri N. Palyanov, Yuri M. Borzdov, Alexander G. Sokol, Yuliya Bataleva, Igor N. Kupriyanov, Vadim N. Reutsky, Michael Wiedenbeck, Nikolay Sobolev
Summary: The study introduces a new model of diamond formation, suggesting that localized electric fields play a significant role in the process. Experimental evidence supports the effectiveness of the model under lithospheric mantle conditions.
Article
Chemistry, Multidisciplinary
Bruno Henriques, Douglas Fabris, Bogdan Voisiat, Aldo R. Boccaccini, Andres Fabian Lasagni
Summary: This study investigates the influence of processing parameters on the morphology and microstructure of zirconia surfaces using direct laser interference patterning (DLIP). Homogeneous line-like patterns with varying depths, widths, and aspect ratio are successfully fabricated using proper processing parameters. Ablated regions show signs of photophysical ablation mechanism. Sub-micrometric pores and nanodroplets are registered for all conditions, while sub-micrometric cracks are developed only for higher fluences. These results have important implications for the fabrication of multifunctional zirconia surfaces for advanced biomedical and engineering applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Instruments & Instrumentation
Tianyi Zhou, Wenxiang Ding, Mengjia Gaowei, Gianluigi De Geronimo, Jen Bohon, John Smedley, Erik Muller
JOURNAL OF SYNCHROTRON RADIATION
(2015)
Article
Instruments & Instrumentation
Mengnan Zou, Mengjia Gaowei, Tianyi Zhou, Anirudha V. Sumant, Cherno Jaye, Daniel A. Fisher, Jen Bohon, John Smedley, Erik M. Muller
JOURNAL OF SYNCHROTRON RADIATION
(2018)
Article
Biochemistry & Molecular Biology
Shaoqing Yang, Tao Wang, Jen Bohon, Marie-Eve Laliberte Gagne, Marilene Bolduc, Denis Leclerc, Huilin Li
JOURNAL OF MOLECULAR BIOLOGY
(2012)
Article
Instruments & Instrumentation
Erik M. Muller, John Smedley, Jen Bohon, Xi Yang, Mengjia Gaowei, John Skinner, Gianluigi De Geronimo, Michael Sullivan, Marc Allaire, Jeffrey W. Keister, Lonny Berman, Annie Heroux
JOURNAL OF SYNCHROTRON RADIATION
(2012)
Article
Instruments & Instrumentation
Jeffrey W. Keister, John Smedley, Erik M. Muller, Jen Bohon, Annie Heroux
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2011)
Article
Instruments & Instrumentation
B. Ravel, K. Attenkofer, J. Bohon, E. Muller, J. Smedley
REVIEW OF SCIENTIFIC INSTRUMENTS
(2013)
Article
Instruments & Instrumentation
Jen Bohon, Rhijuta D'Mello, Corie Ralston, Sayan Gupta, Mark R. Chance
JOURNAL OF SYNCHROTRON RADIATION
(2014)
Review
Biochemistry & Molecular Biology
Jen Bohon
PROTEIN AND PEPTIDE LETTERS
(2019)
Article
Biochemistry & Molecular Biology
Yang Du, Nguyen Minh Duc, Soren G. F. Rasmussen, Daniel Hilger, Xavier Kubiak, Liwen Wang, Jennifer Bohon, Hee Ryung Kim, Marcin Wegrecki, Awuri Asuru, Kyung Min Jeong, Jeongmi Lee, Mark R. Chance, David T. Lodowski, Brian K. Kobilka, Ka Young Chung
Article
Instruments & Instrumentation
Awuri Asuru, Erik R. Farquhar, Michael Sullivan, Donald Abel, John Toomey, Mark R. Chance, Jen Bohon
JOURNAL OF SYNCHROTRON RADIATION
(2019)
Article
Nanoscience & Nanotechnology
Mengnan Zou, Jen Bohon, John Smedley, James Distel, Kyle Schmitt, Ren-Yuan Zhu, Liyuan Zhang, Erik M. Muller
Article
Microbiology
Mohammad Khursheed Siddiqi, Chae Kim, Tracy Haldiman, Miroslava Kacirova, Benlian Wang, Jen Bohon, Mark R. Chance, Janna Kiselar, Jiri G. Safar
Summary: Research has found structural differences between different strains of human prions, which are correlated with their susceptibility to inactivation. The seeding activity of different prion strains is primarily determined by the structure of solvent-exposed domains. The structural characteristics of human prion strains suggest that subtle changes in surface domain organization play a critical role in the infectivity, propagation rate, and targeting of specific brain structures.
Article
Biology
Nikesh Patel, Sam Clark, Eva U. Weiss, Carlos P. Mata, Jen Bohon, Erik R. Farquhar, Daniel P. Maskell, Neil A. Ranson, Reidun Twarock, Peter G. Stockley
Summary: The study investigated the roles of RNA sequence/structure motifs and Packaging Signals (PSs) in regulating assembly of an HBV genome transcript, revealing their crucial importance for correct assembly of core protein and RNA, and suggesting potential similar roles in vivo in coordination with other molecular factors.
COMMUNICATIONS BIOLOGY
(2021)
Proceedings Paper
Instruments & Instrumentation
John Smedley, Erik Muller, Don Pinelli, Wenxiang Ding, Mengjia Gaoweia, Tianyi Zhou, Jen Bohon
PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION (SRI2015)
(2016)
Proceedings Paper
Instruments & Instrumentation
Jen Bohon, Michael Sullivan, Joseph Dvorak, Don Abel, John Toomey, Mark R. Chance
PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION (SRI2015)
(2016)
