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Author : Wenhai Han
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (321 download)
Download or read book Scanning Tunneling Microscopy of the Transition Metal Dichalcogenide Tantalum Disulfide written by Wenhai Han and published by . This book was released on 1994 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William R. Scougale
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.3/5 (795 download)
Download or read book Engineering of Mixed Phase Transition Metal Dichalcogenide Materials written by William R. Scougale and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of smaller, and new computation devices continues to drive interest in the fundamental physical sciences and their possible applications to improved computation capability. With the infancy of quantum computing, much research has been devoted to developing greater noise tolerance in qubit technologies. In addition, other avenues for improvement remain for classical computing, particularly with scaling electronic systems from 3D to 2D. Recently, transition metal dichalcogenide materials have drawn interest due to their extensive variety of material properties, stable chemical state, and comparably easy exfoliation. These materials are routinely reduced to 2D sheets and can be stacked to produce devices. Unanticipated physical phenomena have been observed in such stacked layers, as seen with magic angle graphene. These properties are driven by moiré interactions between the layers, which can vary continuously with parameters such as lattice size and shape, twist angle, and strain. This produces an incredible number of possible combinations of materials and moiré patterns, all of which could produce useful properties. In this work, a mixed phase growth approach to local nanoscopic measurements is detailed. In particular, it is found that for tungsten disulfide these mixed phase crystals are ideal for examining a broad variety of phase mixing and moiré interactions. Finally, a few physical systems are examined in detail including a 2M-2H vertical heterostructure moiré pattern, the appearance of stripe phase moiré patterning not predicted by rigid modeling, and finally the realization of a possible Kondo Lattice on a 2M-2M-2H moiré region.
Author : Brian William Giambattista
Publisher :
ISBN 13 :
Total Pages : 516 pages
Book Rating : 4.X/5 (1 download)
Download or read book Scanning Tunneling Microscopy of Atoms and Charge-density Waves in Transition Metal Chalcogenides at 4.2k written by Brian William Giambattista and published by . This book was released on 1989 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stefan Heinze
Publisher :
ISBN 13 :
Total Pages : 168 pages
Book Rating : 4.:/5 (517 download)
Download or read book First-principles Theory of Scanning Tunneling Microscopy Applied to Transition Metal Surfaces written by Stefan Heinze and published by . This book was released on 2000 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carlton Gray Slough
Publisher :
ISBN 13 :
Total Pages : 562 pages
Book Rating : 4.X/5 (1 download)
Download or read book Scanning Tunneling Microscopy of Charge-density Waves in Transition Metal Chalcogenides at 77 K written by Carlton Gray Slough and published by . This book was released on 1990 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 原梦菲
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book Scanning Tunneling Microscopic Study of Defects and Heterointerfaces of Transition Metal Dichalcogenides written by 原梦菲 and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Manoj K. Singh
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (125 download)
Download or read book Scanning Tunneling Microscopy Studies of 1T-Tantalum Disulfide and Tin Disulfide written by Manoj K. Singh and published by . This book was released on 2020 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 陈惊雷
Publisher :
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.:/5 (14 download)
Download or read book Scanning Tunneling Microscopic Study of Transition Metal Dichalcogenide Ultrathin Films written by 陈惊雷 and published by . This book was released on 2018 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pengzi Liu
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (932 download)
Download or read book Thickness and Stacking Sequence Deermination of 1T-tantalum Disulfide Using Scanning Transmission Electron Microscopy written by Pengzi Liu and published by . This book was released on 2015 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The layered transition metal dichalcogenide (TMD), 1T-tantalum disulfide (1T-TaS2) exhibits a range of electronic properties when cooled down, including phase transitions associated with charge-density-waves (CDWs), metal-insulator transitions as well as superconductivity upon doping or high pressure. The CDW phase transitions can be modulated by the thickness of 1T-TaS2. To understand the material's potential for electronic applications it is therefore important to identify the dimension and atomic layer stacking of 1T-TaS2 samples with both accuracy and precision. In this work, our goal is to develop a reliable method to extract the thickness and stacking sequence of 1T-TaS2 directly from experimentally recorded images. High-angle annular dark field (HAADF) scanning transmission electron microscopy (STEM) is a powerful method to image materials with atomic resolution. However, considering the two-dimensional nature of projected HAADF-STEM images, we choose the technique of convergent-beam electron diffraction (CBED) performed with atomically small electron beams from STEM. We show that combining experimental and simulated CBED patterns with rich information in the third-direction (i.e. thickness and stacking sequence) is an effective approach to study the structures of layered dichalcogenides. I will discuss the development of a method to extract the thickness and stacking sequence of exfoliated 1T-TaS2 layered structures directly from experimental CBED patterns and STEM images by comparison with simulation results. Starting with multislice simulations of both HAADF-STEM images and CBED patterns for 1T-TaS2 thickness and stacking sequence, I will demonstrate the influence on the image contrast. By comparison of these results with experimental data I show that the thickness of 1TTaS2 with simple stacking (all-A stacking) can be determined with a ± 1 unit cells uncertainty. Variations in the symmetry and the intensity distribution in CBED patterns can be used to distinguish simple all-A (AA ... A) stacking from other stacking. Finally, I will briefly discuss the limitations of this method and future work. ii.
Author : Morten Østergaard Pedersen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (471 download)
Download or read book Scanning Tunneling Microscopy Studies of Growth and Adsorption on Transition Metal Surfaces written by Morten Østergaard Pedersen and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Christopher Caulfield
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (594 download)
Download or read book Transition-metal Dichalcogenides and the Scanning Tunnelling Microscope written by John Christopher Caulfield and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 李星燁
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Scanning Tunneling Microscopy and Spectroscopy Investigations Into Transition Metal Substitution in Monolayer Lateral MoSe2-WSe2 Heterojunctions written by 李星燁 and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Probing Transition Metal Dichalcogenide Monolayers and Heterostructures by Optical Spectroscopy and Scanning Tunneling Spectroscopy written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We then compare our results with the exciton lifetime in MoS2/WS2 and MoSe2/WSe2 heterostructures. In TMDC/TMDC heterostructures, the decrease in exciton lifetime is twice that in WS2/graphene heterostructures and due predominantly to charge transfer between the layers. Finally, we probe the band alignment in MoS2/WS2 heterostructures using scanning tunneling microscopy (STM) and spectroscopy (STS).We confirm the monolayer band gaps and the predicted type II band alignment in the heterostructure. Drawing from all the research presented, we arrive at a favorable conclusion about the viability of TMDC based devices.
Author : Chen Wang
Publisher :
ISBN 13 :
Total Pages : 374 pages
Book Rating : 4.X/5 (2 download)
Download or read book Scanning Tunneling Microscopy and Spectroscopy written by Chen Wang and published by . This book was released on 1991 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vinod Kumar Khanna
Publisher : Springer
ISBN 13 : 8132236254
Total Pages : 471 pages
Book Rating : 4.1/5 (322 download)
Download or read book Integrated Nanoelectronics written by Vinod Kumar Khanna and published by Springer. This book was released on 2016-09-16 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keeping nanoelectronics in focus, this book looks at interrelated fields namely nanomagnetics, nanophotonics, nanomechanics and nanobiotechnology, that go hand-in-hand or are likely to be utilized in future in various ways for backing up or strengthening nanoelectronics. Complementary nanosciences refer to the alternative nanosciences that can be combined with nanoelectronics. The book brings students and researchers from multiple disciplines (and therefore with disparate levels of knowledge, and, more importantly, lacunae in this knowledge) together and to expose them to the essentials of integrative nanosciences. The central idea is that the five identified disciplines overlap significantly and arguably cohere into one fundamental nanotechnology discipline. The book caters to interdisciplinary readership in contrast to many of the existing nanotechnology related books that relate to a specific discipline. The book lays special emphasis on nanoelectronics since this field has advanced most rapidly amongst all the nanotechnology disciplines and with significant commercial pervasion. In view of the significant impact that nanotechnology is predicted to have on society, the topics and their interrelationship in this book are of considerable interest and immense value to students, professional engineers, and reserachers.
Author :
Publisher :
ISBN 13 :
Total Pages : 45 pages
Book Rating : 4.:/5 (227 download)
Download or read book Scanning Tunneling Microscopy Investigations of Metal Dichalcogenide Materials written by and published by . This book was released on 1993 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scanning tunneling microscopy (STM) and atomic force microscopy (AFM) have been used to characterize the atomic level structure of electronic properties, reactivity and wear of metal dichalcogenide materials that are or have potential as solid state lubricants. Single crystals Of MoS2, Ni(x)Mo(l-x) S2, MoS(2-x)Se(x) and MoS(2-x)Te(x) have been prepared to determine how chemical modifications affect the local structure and electronic properties of this lubricant. STM images of Ni-doped MoS2 show localized electronic states due to the Ni atoms, while images of Se- and Te-doped materials indicate that anion substitution is electronically delocalized. AFM studies of Te-doped MoS2 show, however, that the tellurium dopants form atomic scale structural protrusions that may reduce sliding friction. AFM has also been used to characterize nanometer scale wear and oxidation on MoS2 and NbSe2 surfaces. In atmosphere at room-temperature AFM studies showed that NbSe2 wears approximately three times faster than MoS2. Furthermore, oxidation studies demonstrated that NbSe2 was significantly more reactive than MoS2 with molecular oxygen. These results indicate that the intrinsic stability of the MoS2 surface make it an effective lubricant, AFM was also used to elucidate the growth of MoO3 on the surface Of MoS2 during oxidation, and to study wear properties of these MoO3 crystallites. The AFM tip was used to define lines with 10 nm resolution in MoO3 and to manipulate distinct MoO3 structures on the MoS2 surface. In addition, metal- substitution in TaS2 has been studied systematically using STM and theoretical methods.
Author :
Publisher :
ISBN 13 :
Total Pages : 668 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1994 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
