Academic literature on the topic 'In situ scanning tunneling micoscopy (STM)'

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Journal articles on the topic "In situ scanning tunneling micoscopy (STM)"

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Sharma, Sagar B., Vincent Maurice, Lorena H. Klein, and Philippe Marcus. "Local inhibition by 2-mercaptobenzothiazole of early stage intergranular corrosion of copper." Journal of The Electrochemical Society 167 (November 30, 2020): 161504. https://doi.org/10.1149/1945-7111/abcc36.

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Corrosion inhibition by 2-mercaptobenzothiazole (MBT) at the surface termination of various types of grain boundaries (GBs) was studied at the nanometer scale on microcrystalline copper in HCl acid solution using <em>in situ</em> electrochemical scanning tunneling microscopy (ECSTM). Macroscopic electrochemical analysis by cyclic voltammetry showed highly effective inhibition of Cu(I) active dissolution blocked by MBT pre-adsorption in a potential range of 0.15-0.2&nbsp;V. ECSTM analysis of the initial stages of intergranular corrosion confirmed the mitigation of net intergranular dissolution by the pre-adsorbed MBT surface layer but also revealed the local accumulation of reaction products in the GB regions. For Coincidence Site Lattice boundaries other than coherent twins, intergranular dissolution, mitigated by the pre-adsorbed MBT layer, and protection by intergranular formation of a film of reaction products were observed. For random GBs, protection by reaction products was dominant, in agreement with their more reactive intrinsic character, generating more Cu(I) ions under anodic polarization and thus promoting the formation of a protective film of reaction products. Coherent twins did not show preferential intergranular reactivity compared to adjacent grains, indicating equally strong efficiency than on grains. These results bring new insight on how inhibition operates locally at various types of GBs.
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Schneeweiss, Marie Anne, Dieter M. Kolb, Dezhong Liu, and Daniel Mandler. "Anodic oxidation of Au(111)." Canadian Journal of Chemistry 75, no. 11 (1997): 1703–9. http://dx.doi.org/10.1139/v97-603.

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The initial stages of the anodic oxidation of Au(111) were investigated by means of cyclic voltammetry as well as in situ scanning tunneling microscopy (STM). The results suggest that the place exchange process, which initiates the oxide formation, starts at step edges. The oxide phase was imaged in situ by scanning tunneling and atomic force microscopy (AFM). The topographic information acquired by the two techniques is compared. Keywords: gold, gold oxide, corrosion, scanning tunneling microscopy (STM), atomic force microscopy (AFM).
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Müller, C., K. Németh, S. Vesztergom, T. Pajkossy, and T. Jacob. "The interface between HOPG and 1-butyl-3-methyl-imidazolium hexafluorophosphate." Physical Chemistry Chemical Physics 18, no. 2 (2016): 916–25. http://dx.doi.org/10.1039/c5cp05406k.

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The interface between highly oriented pyrolytic graphite (HOPG) and 1-butyl-3-metyl-imidazolium hexafluorophosphate (BMIPF<sub>6</sub>) has been studied using cyclic voltammetry, electrochemical impedance spectroscopy, immersion charge measurements and in situ scanning tunneling microscopy (in situ STM).
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Peña Román, Ricardo Javier, Yves Auad, Lucas Grasso, et al. "Design and implementation of a device based on an off-axis parabolic mirror to perform luminescence experiments in a scanning tunneling microscope." Review of Scientific Instruments 93, no. 4 (2022): 043704. http://dx.doi.org/10.1063/5.0078423.

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We present the design, implementation, and illustrative results of a light collection/injection strategy based on an off-axis parabolic mirror collector for a low-temperature Scanning Tunneling Microscope (STM). This device allows us to perform STM induced Light Emission (STM-LE) and Cathodoluminescence (STM-CL) experiments and in situ Photoluminescence (PL) and Raman spectroscopy as complementary techniques. Considering the Étendue conservation and using an off-axis parabolic mirror, it is possible to design a light collection and injection system that displays 72% of collection efficiency (considering the hemisphere above the sample surface) while maintaining high spectral resolution and minimizing signal loss. The performance of the STM is tested by atomically resolved images and scanning tunneling spectroscopy results on standard sample surfaces. The capabilities of our system are demonstrated by performing STM-LE on metallic surfaces and two-dimensional semiconducting samples, observing both plasmonic and excitonic emissions. In addition, we carried out in situ PL measurements on semiconducting monolayers and quantum dots and in situ Raman on graphite and hexagonal boron nitride (h-BN) samples. Additionally, STM-CL and PL were obtained on monolayer h-BN gathering luminescence spectra that are typically associated with intragap states related to carbon defects. The results show that the flexible and efficient light injection and collection device based on an off-axis parabolic mirror is a powerful tool to study several types of nanostructures with multiple spectroscopic techniques in correlation with their morphology at the atomic scale and electronic structure.
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Goritzka, Jan C., Benjamin Herd, Philipp P. T. Krause, Jens Falta, J. Ingo Flege, and Herbert Over. "Insights into the gas phase oxidation of Ru(0001) on the mesoscopic scale using molecular oxygen." Physical Chemistry Chemical Physics 17, no. 21 (2015): 13895–903. http://dx.doi.org/10.1039/c4cp06010e.

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We present an extensive mesoscale study of the initial gas phase oxidation of Ru(0001), employing in situ low-energy electron microscopy (LEEM), micro low-energy electron diffraction (μ-LEED) and scanning tunneling microscopy (STM).
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Tewari, Sumit, Koen M. Bastiaans, Milan P. Allan, and Jan M. van Ruitenbeek. "Robust procedure for creating and characterizing the atomic structure of scanning tunneling microscope tips." Beilstein Journal of Nanotechnology 8 (November 13, 2017): 2389–95. http://dx.doi.org/10.3762/bjnano.8.238.

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Scanning tunneling microscopes (STM) are used extensively for studying and manipulating matter at the atomic scale. In spite of the critical role of the STM tip, procedures for controlling the atomic-scale shape of STM tips have not been rigorously justified. Here, we present a method for preparing tips in situ while ensuring the crystalline structure and a reproducibly prepared tip structure up to the second atomic layer. We demonstrate a controlled evolution of such tips starting from undefined tip shapes.
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Zhang, Sun, Shen, et al. "Recent Progress with In Situ Characterization of Interfacial Structures under a Solid–Gas Atmosphere by HP-STM and AP-XPS." Materials 12, no. 22 (2019): 3674. http://dx.doi.org/10.3390/ma12223674.

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: Surface science is an interdisciplinary field involving various subjects such as physics, chemistry, materials, biology and so on, and it plays an increasingly momentous role in both fundamental research and industrial applications. Despite the encouraging progress in characterizing surface/interface nanostructures with atomic and orbital precision under ultra-high-vacuum (UHV) conditions, investigating in situ reactions/processes occurring at the surface/interface under operando conditions becomes a crucial challenge in the field of surface catalysis and surface electrochemistry. Promoted by such pressing demands, high-pressure scanning tunneling microscopy (HP-STM) and ambient pressure X-ray photoelectron spectroscopy (AP-XPS), for example, have been designed to conduct measurements under operando conditions on the basis of conventional scanning tunneling microscopy (STM) and photoemission spectroscopy, which are proving to become powerful techniques to study various heterogeneous catalytic reactions on the surface. This report reviews the development of HP-STM and AP-XPS facilities and the application of HP-STM and AP-XPS on fine investigations of heterogeneous catalytic reactions via evolutions of both surface morphology and electronic structures, including dehydrogenation, CO oxidation on metal-based substrates, and so on. In the end, a perspective is also given regarding the combination of in situ X-ray photoelectron spectroscopy (XPS) and STM towards the identification of the structure–performance relationship.
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ITAYA, KINGO. "Scanning Tunneling Microscopy(STM). Application for Chemistry. In-Situ STM of Solid-Liquid Interfaces." Nihon Kessho Gakkaishi 35, no. 2 (1993): 135–36. http://dx.doi.org/10.5940/jcrsj.35.135.

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Lo, W. K., and J. C. H. Spence. "STM imaging of the sample or the tip ? an in situ REM study." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (1992): 1126–27. http://dx.doi.org/10.1017/s0424820100130262.

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Image interpretation for Scanning Tunneling Microscopy (STM) is complicated by inadequate tip characterization. Tip and surface features can be difficult to separate, especially for rough surfaces. Figure 1, an STM image of a gold platelet deposited onto graphite, illustrates some of the possible problems. The doubled image of the platelet and step, for example, is a commonly encountered image artifact caused by tunneling from multiple tip asperities. The shape of the platelet(s) may also be an artifact since they are usually round. Ordinarily, to confirm the interpretation of such objects, experiments would be repeated using different tips and specimens to test for reproducibility. This is not an ideal procedure since the exact experimental conditions are difficult to duplicate. Alternatively, by comparing images of the same topography taken by STM and an independent imaging method, one can expose these artifacts.STM image artifacts were studied using an STM operating inside a Philips EM 400T TEM. This allowed imaging of the same region by Reflection Electron Microscopy (REM) and STM, independently of each other.
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Schouteden, K., D. A. Muzychenko, and C. Van Haesendonck. "Spin-Polarized Scanning Tunneling Spectroscopy of Self-Organized Nanoscale Co Islands on Au(111) Surfaces." Journal of Nanoscience and Nanotechnology 8, no. 7 (2008): 3616–20. http://dx.doi.org/10.1166/jnn.2008.412.

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Magnetic monolayer and bilayer Co islands of only a few nanometer in size were grown by atomic deposition on atomically flat Au(111) films. The islands were studied in situ by scanning tunneling microscopy (STM) and spectroscopy at low temperatures. Spin-resolved tunneling spectroscopy, using an STM tip with a magnetic coating, revealed that the Co islands exhibit a net magnetization perpendicular to the substrate surface due to the presence of spin-polarized d-states. A random distribution of islands with either upward or downward pointing magnetization was observed, without any specific correlation of magnetization orientation with island size or island height.
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Dissertations / Theses on the topic "In situ scanning tunneling micoscopy (STM)"

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Foley, Andrew. "Operation of Cold STM System In Conjunction With In Situ Molecular Beam Epitaxy." Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1354026504.

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Dehiwala, Liyanage Chamathka H. "In-situ scanning tunneling microscopy studies of the SEI formation on graphite anodes in propylene carbonate." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1574502965210263.

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Iffländer, Tim. "Electronic and Magnetic Properties of the Fe/GaAs(110) Interface." Doctoral thesis, 2015. http://hdl.handle.net/11858/00-1735-0000-0028-86DE-A.

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Books on the topic "In situ scanning tunneling micoscopy (STM)"

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Cuevas, J. C., D. Roditchev, T. Cren, and C. Brun. Proximity Effect A New Insight from In Situ Fabricated Hybrid Nanostructures. Edited by A. V. Narlikar. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780198738169.013.4.

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This article investigates the proximity effect on small length and energy scales in novel low-dimensional systems using in situ fabricated superconducting nanostructures (SNSs) and scanning tunneling microscopy/spectroscopy (STM/STS) techniques. After a brief historical review of research on superconductivity and the proximity effect, the article describes how to build a variety of in situ superconducting hybrid nanostructures and how to investigate the proximity density of states with the help of STM/STS. It then considers the proximity effect in a correlated 2D disordered metal and in diffusive SNS junctions before discussing proximity Josephson vortices. It also examines the proximity effect between two dissimilar superconductors and concludes by highlighting several fundamental problems related to proximity effect in the framework of quasiclassical microscopic Usadel theory.
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Book chapters on the topic "In situ scanning tunneling micoscopy (STM)"

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Chen, C. Julian. "Tip Treatment." In Introduction to Scanning Tunneling Microscopy. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198856559.003.0014.

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This chapter discusses various methods for tip treatment. First, a general discussion about the experimental facts of STM and AFM tips is presented, which points to the subtleties and significance of the last few atoms at the tip apex. The standard method of making an STM tip is the electrochemical etching of a tungsten wire. The experimental procedure is described in detail. The study of the tip using field-ion microscopy is outlined. The tungsten tips freshly made from electrochemical etching often do not provide atomic resolution. Ex-situ and in-situ tip treatments are necessary. Several ex-situ tip treatment methods are described, inducing annealing, field evaporation, and annealing with a field. In-situ tip treatment method such as high-field treatment and controlled collision are described. Then, tip treatment for electrochemical STM is described. Tip treatment methods for spin-polarized STM are described. Finally, tip functionalization, especially with Xe atom and CO molecule, is described.
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Chen, C. Julian. "Piezoelectric Scanner." In Introduction to Scanning Tunneling Microscopy. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198856559.003.0010.

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This chapter discusses the physical principle, design, and characterization of piezoelectric scanners, which is the heart of STM and AFM. The concept of piezoelectricity is introduced at the elementary level. Two major piezoelectric materials used in STM and AFM, quartz and lead zirconate titanate ceramics (PZT), are described. After a brief discussion of the tripod scanner and the bimorph, much emphasis is on the most important scanner in STM and AFM: the tube scanner. A step-by-step derivation of the deflection formula is presented. The in-situ testing and calibration method based on pure electrical measurements is described. The formulas of the resonance frequencies are also presented. To compensate the non-linear behavior of the tube scanner, an improved design, the S-scanner, is described. Finally, a step-by-step procedure to repole a depoled piezo is presented.
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Conference papers on the topic "In situ scanning tunneling micoscopy (STM)"

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Pickering, Howard W., and Toshio Sakurai. "Scanning Tunneling Microscopy and Its Applications in Corrosion Science." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91081.

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Abstract Scanning tunneling microscopy (STM) is described with a view to its application for the study of corrosion reactions. The principles of STM are presented in terms of the theory, construction of the microscope including field ion capability for characterizing the probe tip, and its applications for characterizing surfaces. Recent results will be presented to illustrate its versatility for the study of surface structure, chemisorption and surface reactions, including the study of atomic hydrogen adsorption on the Si(111)-7 x 7 surface and real time (in-situ) studies of anodic copper dissolution in aqueous solution, the latter being carried out using a modified commercial STM for use in liquids.
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Miyasaka, Akihiro, and Hiroyuki Ogawa. "Application of Scanning Tunneling Microscope for in Situ Observation of Stainless Steel Surface in Aqueous Solutions." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90139.

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Abstract The Scanning Tunneling Microscope (STM) was applied to the observation of engineering metal surfaces in air and in aqueous solutions. It was found that STM could operate in these conditions on industrial metals such as stainless steels. STM images obtained in air and an aqueous solution were in good agreement with a high magnification scanning electron micrograph. High resolution images on the nanometer scale could be obtained in brine using STM. These results indicate the promising application of STM to corrosion research.
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McCormick, Larry D. "A Discussion of the Applications of Scanning Tunneling Microscopy to Corrosion Research." In CORROSION 1989. NACE International, 1989. https://doi.org/10.5006/c1989-89042.

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Abstract This paper presents brief discussions of the capabilities and requirements of scanning tunneling microscopy (STM) with the goal of demonstrating the unique potential for this technique for in situ electrochemistry and corrosion research. STM images of aluminum and titanium in water are included.
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Akiyama, T. "Insulated Conductive Probes for in situ Experiments in Structural Biology." In SCANNING TUNNELING MICROSCOPY/SPECTROSCOPY AND RELATED TECHNIQUES: 12th International Conference STM'03. AIP, 2003. http://dx.doi.org/10.1063/1.1639691.

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Tabayashi, Daiji. "In Situ EC-AFM Observation on Pb Electrodes in Sulfuric Acid Solution with or without Lignin." In SCANNING TUNNELING MICROSCOPY/SPECTROSCOPY AND RELATED TECHNIQUES: 12th International Conference STM'03. AIP, 2003. http://dx.doi.org/10.1063/1.1639743.

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Su, C. "In-situ Measurement of In-Plane and Out-of-Plane Force Gradient with a Torsional Resonance Mode AFM." In SCANNING TUNNELING MICROSCOPY/SPECTROSCOPY AND RELATED TECHNIQUES: 12th International Conference STM'03. AIP, 2003. http://dx.doi.org/10.1063/1.1639717.

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Nakamoto, Keiichi. "In-Situ Observation of Freeze Fractured and Deep Etched Red Blood Cells with a High-Vacuum Low-Temperature Atomic Force Microscope." In SCANNING TUNNELING MICROSCOPY/SPECTROSCOPY AND RELATED TECHNIQUES: 12th International Conference STM'03. AIP, 2003. http://dx.doi.org/10.1063/1.1639731.

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Hagendorf, Ch. "In Situ-STM of Growth, Atomic and Electronic Structure of Thin NiO Films on Ag(001) at Elevated Temperatures (350 – 475 K)." In SCANNING TUNNELING MICROSCOPY/SPECTROSCOPY AND RELATED TECHNIQUES: 12th International Conference STM'03. AIP, 2003. http://dx.doi.org/10.1063/1.1639787.

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Schulte, Albert. "STM tips for in-situ scanning tunneling microscopy in aqueous solutions prepared using electrophoretic deposition of paint." In Micromachining and Microfabrication, edited by Craig R. Friedrich and Yuli Vladimirsky. SPIE, 1998. http://dx.doi.org/10.1117/12.324078.

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Desai, A. V., and M. A. Haque. "Design and Fabrication of a Novel MEMS Device for High Resolution Force and Displacement Measurement." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59432.

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We present the design and fabrication of a MEMS device for high resolution force and displacement measurements. Both quantitative and qualitative measurements can be performed in-situ in scanning, transmission and tunneling electron microcopy (SEM, TEM and STM), where the small chamber size makes it challenging to integrate conventional force-displacement sensors. The device exploits the amplification of displacement and attenuation of structural stiffness due to buckling of slender silicon beams to obtain pico-Newton force and nanometer displacement resolution. The design uses buckling of two sets of beams of slightly different lengths to create a loading device. The amplification of the specimen deformation into the micron range enables measurement by visual inspection (optical microscope) without using complex displacement sensing mechanism. Co-fabrication of the specimen with the device is possible, thus eliminating the problems associated with alignment and positioning. The device can be used for characterization of materials such as carbon nanotube-polymer interfaces, nanoscale thin films and mechanical testing of single biological cells.
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