Molybdenum disulfide is a highly esteemed 2D material with interesting applications in nanoelectronics, composites, biotechnology and beyond. Its production through liquid-phase exfoliation in HO is low-cost and eco-friendly. Herein, we present a detailed experimental and theoretical investigation seeking to explain the peculiar stability of MoS in HO medium. By combining different microscopic (SEM, AFM and OM), spectrometric (Raman, UV-vis and AFM-FTIR), scattering (DLS) and ab initio simulation techniques, an edge-functionalization hypothesis for the excellent solvent properties of water for producing few-layer MoS has been demonstrated.
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http://dx.doi.org/10.1039/c9cp06422b | DOI Listing |
Microsyst Nanoeng
December 2024
Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, 32611, USA.
Nanoelectromechanical systems (NEMS) incorporating atomic or molecular layer van der Waals materials can support multimode resonances and exotic nonlinear dynamics. Here we investigate nonlinear coupling of closely spaced modes in a bilayer (2L) molybdenum disulfide (MoS) nanoelectromechanical resonator. We model the response from a drumhead resonator using equations of two resonant modes with a dispersive coupling term to describe the vibration induced frequency shifts that result from the induced change in tension.
View Article and Find Full Text PDFBiosensors (Basel)
December 2024
Department of Physics and Quantum Photonics Institute, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
Two-dimensional materials with a nanostructure have been introduced as promising candidates for SERS platforms for sensing application. However, the dynamic control and tuning of SERS remains a long-standing problem. Here, we demonstrated active tuning of the enhancement factor of the first- and second-order Raman mode of monolayer (1L) MoS transferred onto a flexible metallic nanotip array.
View Article and Find Full Text PDFACS Appl Bio Mater
December 2024
Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom Campus, Thiruvananthapuram, 695581 Kerala, India.
Cardiovascular disease is the primary cause of mortality worldwide, as stated by the World Health Organization. We utilized the red fluorescence emitted by copper nanoclusters (CuNCs) to detect cardiac Troponin T (cTnT). We designed a fluorescent probe to detect cTnT using an on-off-on technique.
View Article and Find Full Text PDFMacromol Rapid Commun
December 2024
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
Water-based lubricants have the advantages of low cost, easy cleaning, and environmental friendliness, and are suitable for various lubrication applications. However, the limited tribological properties of pure water-based lubricants restrict their use. To improve these properties, water-based lubrication additives can be employed.
View Article and Find Full Text PDFACS Omega
December 2024
2D Materials and Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India.
The demand for compact energy storage devices necessitates the development of high-performance anode materials directly integrated with current collectors, minimizing or eliminating the need for binders or additives. With its layered structure and high theoretical capacity, molybdenum disulfide (MoS) is regarded as a promising anode material for lithium-ion batteries (LIBs). Here, we report chemical vapor deposition (CVD) growth of self-integrated, vertically aligned MoS nanosheets with embedded molybdenum dioxide (MoO) directly on a molybdenum foil and explore its potential as an anode material for LIBs.
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