Bibliografias temáticas / Nanoscale chemical imaging

Índice

Artigos de revistas
Teses / dissertações
Capítulos de livros
Trabalhos de conferências
Relatórios de organizações

Literatura científica selecionada sobre o tema "Nanoscale chemical imaging"

Autor: Grafiati

Publicado: 25 de janeiro de 2025

Crie uma referência precisa em APA, MLA, Chicago, Harvard, e outros estilos

Selecione um tipo de fonte:

Consulte a lista de atuais artigos, livros, teses, anais de congressos e outras fontes científicas relevantes para o tema "Nanoscale chemical imaging".

Ao lado de cada fonte na lista de referências, há um botão "Adicionar à bibliografia". Clique e geraremos automaticamente a citação bibliográfica do trabalho escolhido no estilo de citação de que você precisa: APA, MLA, Harvard, Chicago, Vancouver, etc.

Você também pode baixar o texto completo da publicação científica em formato .pdf e ler o resumo do trabalho online se estiver presente nos metadados.

Artigos de revistas sobre o assunto "Nanoscale chemical imaging"

Anderson, IM, JH J. Scott e ZH Levine. "Three-Dimensional Nanoscale Chemical Imaging via EFTEM Spectral Imaging". Microscopy and Microanalysis 12, S02 (31 de julho de 2006): 1550–51. http://dx.doi.org/10.1017/s1431927606068784.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Häberle, T., D. Schmid-Lorch, F. Reinhard e J. Wrachtrup. "Nanoscale nuclear magnetic imaging with chemical contrast". Nature Nanotechnology 10, n.º 2 (5 de janeiro de 2015): 125–28. http://dx.doi.org/10.1038/nnano.2014.299.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Stadler, Johannes, Thomas Schmid e Renato Zenobi. "Nanoscale Chemical Imaging of Single-Layer Graphene". ACS Nano 5, n.º 10 (7 de outubro de 2011): 8442–48. http://dx.doi.org/10.1021/nn2035523.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Nowak, Derek, William Morrison, H. Kumar Wickramasinghe, Junghoon Jahng, Eric Potma, Lei Wan, Ricardo Ruiz et al. "Nanoscale chemical imaging by photoinduced force microscopy". Science Advances 2, n.º 3 (março de 2016): e1501571. http://dx.doi.org/10.1126/sciadv.1501571.

Texto completo da fonte

Resumo:

Correlating spatial chemical information with the morphology of closely packed nanostructures remains a challenge for the scientific community. For example, supramolecular self-assembly, which provides a powerful and low-cost way to create nanoscale patterns and engineered nanostructures, is not easily interrogated in real space via existing nondestructive techniques based on optics or electrons. A novel scanning probe technique called infrared photoinduced force microscopy (IR PiFM) directly measures the photoinduced polarizability of the sample in the near field by detecting the time-integrated force between the tip and the sample. By imaging at multiple IR wavelengths corresponding to absorption peaks of different chemical species, PiFM has demonstrated the ability to spatially map nm-scale patterns of the individual chemical components of two different types of self-assembled block copolymer films. With chemical-specific nanometer-scale imaging, PiFM provides a powerful new analytical method for deepening our understanding of nanomaterials.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Wilson, Andrew J., Dinumol Devasia e Prashant K. Jain. "Nanoscale optical imaging in chemistry". Chemical Society Reviews 49, n.º 16 (2020): 6087–112. http://dx.doi.org/10.1039/d0cs00338g.

Texto completo da fonte

Resumo:

New advances in label-free optical imaging methods are allowing a wide range of chemical processes in surface science, catalysis, and photochemistry to be probed on the nanoscale and single-molecule levels.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Retterer, Scott T., Jennifer L. Morrell-Falvey e Mitchel J. Doktycz. "Nano-Enabled Approaches to Chemical Imaging in Biosystems". Annual Review of Analytical Chemistry 11, n.º 1 (12 de junho de 2018): 351–73. http://dx.doi.org/10.1146/annurev-anchem-061417-125635.

Texto completo da fonte

Resumo:

Understanding and predicting how biosystems function require knowledge about the dynamic physicochemical environments with which they interact and alter by their presence. Yet, identifying specific components, tracking the dynamics of the system, and monitoring local environmental conditions without disrupting biosystem function present significant challenges for analytical measurements. Nanomaterials, by their very size and nature, can act as probes and interfaces to biosystems and offer solutions to some of these challenges. At the nanoscale, material properties emerge that can be exploited for localizing biomolecules and making chemical measurements at cellular and subcellular scales. Here, we review advances in chemical imaging enabled by nanoscale structures, in the use of nanoparticles as chemical and environmental probes, and in the development of micro- and nanoscale fluidic devices to define and manipulate local environments and facilitate chemical measurements of complex biosystems. Integration of these nano-enabled methods will lead to an unprecedented understanding of biosystem function.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Cimatu, K. A., S. M. Mahurin, K. A. Meyer e R. W. Shaw. "Nanoscale Chemical Imaging of Zinc Oxide Nanowire Corrosion". Journal of Physical Chemistry C 116, n.º 18 (27 de abril de 2012): 10405–14. http://dx.doi.org/10.1021/jp301922a.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Kelly, K. F., E. T. Mickelson, R. H. Hauge, J. L. Margrave e N. J. Halas. "Nanoscale imaging of chemical interactions: Fluorine on graphite". Proceedings of the National Academy of Sciences 97, n.º 19 (29 de agosto de 2000): 10318–21. http://dx.doi.org/10.1073/pnas.190325397.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Kumar, Naresh, Bert M. Weckhuysen, Andrew J. Wain e Andrew J. Pollard. "Nanoscale chemical imaging using tip-enhanced Raman spectroscopy". Nature Protocols 14, n.º 4 (25 de março de 2019): 1169–93. http://dx.doi.org/10.1038/s41596-019-0132-z.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Prater, C. B., M. Lo, Q. Hu, H. Yang, C. Marcott e K. Kjoller. "Nanoscale Chemical Imaging via AFM coupled IR Spectroscopy". Microscopy and Microanalysis 21, S3 (agosto de 2015): 1869–70. http://dx.doi.org/10.1017/s1431927615010120.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Mais fontes

Teses / dissertações sobre o assunto "Nanoscale chemical imaging"

Wolf, Daniel, e Christian Kübel. "Electron Tomography for 3D imaging of Nanoscale Materials". Carl Hanser Verlag, 2018. https://slub.qucosa.de/id/qucosa%3A33863.

Texto completo da fonte

Resumo:

Over the last two decades, electron tomography, the combination of tomographic methods and transmission electron microscopy (TEM), has considerably contributed to provide new insights into the three-dimensional structure of nanoscale materials. In particular, emerging advances in nanoscience are inevitably linked to developments in quantitative two-dimensional (2D) and three-dimensional (3D) TEM characterization techniques. In many cases, ET is employed to reconstruct the 3D shape (faceting of crystals) and the distribution or the arrangement (assembly) of nanoparticles down to the nanometer and atomic scale. Moreover, it is used to reconstruct the full 3D morphology of complex nanomaterials and composites, which can be evaluated further as a basis for quantitative modelling of physical properties. Beyond these capabilities, ET reveals the 3D chemical composition of nanostructures by combining it with spectroscopic methods, such as, electron energy-loss spectroscopy (EELS) and energy-dispersive X-ray spectroscopy (EDS). In specific cases, ET applied together with electron holography enables reconstructing electrostatic potentials in 3D, for example space-charge related diffusion potentials at pn-junctions in semiconductors. In ferromagnetic materials, this approach also allows for the 3D reconstruction of the internal remanent magnetic induction (B-field).

Estilos ABNT, Harvard, Vancouver, APA, etc.

Cooney, Gary Sean. "Spectroscopie Raman exaltée de pointe pour la caractérisation de systèmes biologiques : de l'imagerie chimique et structurale nanométrique à l’air à son développement en milieu liquide". Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0267.

Texto completo da fonte

Resumo:

Cette thèse a pour objectif le développement de la spectroscopie Raman exaltée de pointe (TERS) pour des applications en milieux liquides, et plus particulièrement pour l’étude de membranes lipidiques et de protéines amyloïdes qui sont impliquées dans des maladies neurodégénératives comme la maladie d’Alzheimer. La TERS s’affranchit de la limite de diffraction de la spectroscopie Raman conventionnelle en combinant la haute résolution spatiale de la microscopie à sonde locale et la spécificité chimique de la spectroscopie Raman exaltée de surface (SERS). En utilisant une pointe de microscope à sonde locale métallisée et effilée au niveau nanométrique, la TERS génère une exaltation localisée du signal Raman au sommet de la pointe. Ceci permet l’étude de biomolécules optiquement non-résonnantes à l’échelle nanométrique sans marquage moléculaire et de manière non-destructive. Les défis clés qui sont traités dans ce travail incluent la fabrication de pointes actives en TERS, l’optimisation d’un nouveau système TERS en réflexion totale interne (RTI) pour des utilisations en environnements liquides, et l’exploitation de données complexes obtenues par imagerie TERS hyperspectrale. Des protéines amyloïdes sous forme de fibrilles de protéine Tau ont été étudiées au moyen de notre instrument de RTI-TERS en prenant des fibrilles induites par de l’héparine comme référence pour évaluer la performance du système. Des études TERS de fibrilles Tau induites par de l’ARN ont donné un aperçu des mécanismes de formation sous-jacents des fibrilles amyloïdes. Par ailleurs, ces données ont été utilisées pour explorer le potentiel des méthodes chimiométriques, telles que l’Analyse en Composantes Principales (ACP) et l’Analyse en Cluster Hiérarchique (ACH), pour leur analyse fine. Ces méthodes ont été évaluées dans le contexte des méthodes plus traditionnelles de sélection de pics individuels. Cette thèse détaille aussi le développement d’un système RTI-TERS compatible avec le milieu liquide et son application à l’étude de bicouches lipidiques supportées en milieux aqueux. Cette avancée permet la caractérisation nanométrique de membranes lipidiques dans des milieux biologiquement pertinents et plus réalistes que l’air. Dans la perspective de futurs travaux examinant les interactions protéines-lipides, ces innovations sont cruciales pour comprendre la formation des fibrilles amyloïdes et leurs effets délétères sur les cellules neuronales. Au final, cette thèse a amélioré la TERS en tant qu’outil pour étudier les structures biomoléculaires à l’échelle nanométrique dans le contexte des maladies neurodégénératives, et le système RTI-TERS optimisé fournit une plateforme pour de futures recherches dans des applications biologiques et biomédicales
The aims of this thesis are the development of tip-enhanced Raman spectroscopy (TERS) for applications in liquid media, specifically for the study of lipid membranes and amyloid proteins which are implicated in neurodegenerative diseases like Alzheimer’s. TERS overcomes the diffraction limit of conventional Raman spectroscopy by combining the high spatial resolution of scanning probe microscopy with the chemical specificity of surface-enhanced Raman spectroscopy (SERS). By employing a metal-coated nano-tapered scanning probe microscopy probe tip, TERS generates a localised enhancement of the Raman signal at the tip apex. This enables the study of optically non-resonant biomolecules at the nanoscale in a label-free and non-destructive manner. The key challenges that are addressed in this work include the fabrication of TERS-active tips, the optimisation of our novel total-internal reflection (TIR)-TERS system for use in liquid environments, and the handling of the complex data obtained from hyperspectral TERS imaging. Amyloid proteins in the form of Tau fibrils were studied using this TIR-TERS setup with heparin-induced Tau fibrils being a benchmark for evaluating the performance of the system. TERS studies of RNA-induced Tau fibrils provided insight into the underlying formation mechanisms of amyloid fibrils. In addition, these data were used to explore the use of chemometric methods, such as Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA), for their fine analysis. These methods were evaluated in the context of more traditional peak-picking methods. This thesis also details the development of a liquid-compatible TIR-TERS system and its application to the study of supported lipid bilayers in aqueous media. This advancement enables the nanoscale investigation of lipid membranes in biologically relevant media, which is more representative compared to TERS in air. With the outlook of future works investigating protein-lipid interactions, these innovations are crucial for understanding amyloid fibril formation and their deleterious effects on neuronal cells. To conclude, this thesis enhances TERS as a tool for studying biomolecular structures in the context of neurodegenerative diseases at the nanoscale, and the optimised TIR-TERS system provides a platform for future research in biological and biomedical applications

Estilos ABNT, Harvard, Vancouver, APA, etc.

Paulite, Melissa Joanne. "Nanoscale Chemical Imaging of Synthetic and Biological Materials using Apertureless Near-field Scanning Infrared Microscopy". Thesis, 2012. http://hdl.handle.net/1807/34838.

Texto completo da fonte

Resumo:

Apertureless near-field scanning infrared microscopy is a technique in which an impinging infrared beam is scattered by a sharp atomic force microscopy (AFM) tip oscillating at the resonant frequency of the cantilever in close proximity to a sample. Several advantages offered by near-field imaging include nanoscale imaging with high spatial resolution (near-field imaging is not restricted by the diffraction limit of light) and the ability to differentiate between chemical properties of distinct compounds present in the sample under study due to differences in the scattered field. An overview of the assembly, tuning, and implementation of the near-field instrumentation is provided, as well as detailed descriptions about the samples probed and other instrumentation used. A description of the near-field phenomena, a comparison between aperture and apertureless-type near-field microscopy, and the coupled dipoles model explaining the origin of the chemical contrast present in near-field infrared imaging was discussed. Simultaneous topographic and chemical contrast images were collected at different wavelengths for the block copolymer thin film, polystyrene-b-poly(methyl ethacrylate) (PS-b-PMMA) and for amyloid fibrils synthesized from the #21-31 peptide of β2-microglobulin. In both cases it was observed that the experimental scattered field spectrum correlates strongly with that calculated using the far-field absorption spectrum, and using near-field microscopy, nanoscale structural and/or compositional variations were observed, which would not have been possible using ensemble FTIR measurements. Lastly, tip-enhanced Raman spectra of the #21-31 and #16-22 peptide fragments from the β2-microglobulin and Aβ(1-40) peptide were collected, examined, and an outline of the optimization conditions described.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Capítulos de livros sobre o assunto "Nanoscale chemical imaging"

Aronova, M. A., Y. C. Kim, A. A. Sousa, G. Zhang e R. D. Leapman. "Nanoscale Imaging of Chemical Elements in Biomedicine". In IFMBE Proceedings, 357–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14998-6_91.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Ovchinnikova, Olga S. "Toward Nanoscale Chemical Imaging: The Intersection of Scanning Probe Microscopy and Mass Spectrometry". In Scanning Probe Microscopy of Functional Materials, 181–98. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7167-8_7.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Mehdizadeh, B., K. Vessalas, B. Ben, A. Castel, S. Deilami e H. Asadi. "Advances in Characterization of Carbonation Behavior in Slag-Based Concrete Using Nanotomography". In Lecture Notes in Civil Engineering, 297–308. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_30.

Texto completo da fonte

Resumo:

AbstractExposure of concrete to the atmosphere causes absorption of CO2 and carbonation via a chemical reaction between the CO2 and calcium hydroxide and calcium-silicate-hydrate reaction products inside the concrete. A greater understanding of carbonation behavior and its micro- and nanoscale impacts is needed to predict and model concrete durability, cracking potential and steel depassivation behaviors. New and sophisticated techniques have emerged to analyze the microstructural behavior of concrete subjected to carbonation. High-resolution full-field X-ray imaging is providing new insights to nanoscale behavior. Full-field nano-images provide significant insight into 3D structural identification and mapping. Nanotomographic modeling of an accelerated carbonated test specimen can also provide a 3D view of the pore structure that resides inside slag-based concrete. This is critical for better understanding of the capillary porosity and pore solution behaviors of concrete in situ. We investigated the analysis of durability properties, including the carbonation behavior of slag-based concrete, by evaluating microstructural and nanotomographic identification techniques.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Schmid, Gregor, Martin Obst, Juan Wu e Adam Hitchcock. "3D Chemical Imaging of Nanoscale Biological, Environmental, and Synthetic Materials by Soft X-Ray STXM Spectrotomography". In X-ray and Neutron Techniques for Nanomaterials Characterization, 43–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-48606-1_2.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Menoni, C. S., I. Kuznetsov, T. Green, W. Chao, E. R. Bernstein, D. C. Crick e J. J. Rocca. "Soft X-Ray Laser Ablation Mass Spectrometry for Chemical Composition Imaging in Three Dimensions (3D) at the Nanoscale". In Springer Proceedings in Physics, 221–30. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73025-7_34.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Verrecchia, Eric P., e Luca Trombino. "The Future of Soil Micromorphology". In A Visual Atlas for Soil Micromorphologists, 151–55. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67806-7_6.

Texto completo da fonte

Resumo:

AbstractThe advancement of technology opens up new opportunities to soil micromorphology. Although a description using an optical microscope of the fabric and the various constituents of soils will be always necessary to investigate soil evolution, the uncovered thin section leaves soil material on which analyses can be performed. Since the 1970s, it was possible to observe thin sections at high resolution with the scanning electron microscope in its backscattered electron mode (see “10.1007/978-3-030-67806-7_1#Sec7”). It was also possible to generate chemical images with electron microprobes. But these conventional techniques, as well as new ones, greatly improve the study of matter interactions in soils, not only by enhancing the spatial resolution with incredible precision but also by providing chemical and mineralogical images, which substantially increased the accuracy of micromorphological diagnostics. By coupling morphological and chemical approaches, including stable isotope imaging in soil material, the future of soil micromorphology will undoubtedly offer new opportunities to solve specific problems, especially in the field of organomineral interactions in soils. It is wise to say that soil micromorphology, with its analytical and holistic approaches, will make it possible to build the necessary solid foundations needed for investigations that are increasingly oriented towards nanoscale objects: it will remind us that the trees should not hide the forest.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Liew, Thomas, R. Ji e G. L. Chen. "High Spatial Resolution Chemical Imaging of Tribo- Surfaces in Magnetic Recording". In Fundamentals of Tribology and Bridging the Gap Between the Macro- and Micro/Nanoscales, 869–76. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0736-8_62.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Sharma, Rohit, Mr Siddhartha, Mr Ghazi e Ms Sweety Pal. "ADVANCEMENT IN MEDICAL IMAGING: NANOTECHNOLOGY". In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 5, 152–63. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3becs5p2ch2.

Texto completo da fonte

Resumo:

The integration of nanomaterials has significantly enhanced the sensitivity, specificity, and versatility of imaging modalities. In this chapter we explored the utilization of nanoscale contrast agents, such as quantum dots and magnetic nanoparticles, to improve the visualization of tissues and targets. Targeted imaging, enabled by functionalizing nanoparticles with specific ligands, has emerged as a promising strategy to enhance accuracy and reduce false positives. Molecular imaging, facilitated by nanotechnology, allows for real-time monitoring of cellular and molecular events, providing insights into disease mechanisms. Moreover, the miniaturization of imaging devices, a product of nanoscale components, is transforming point-of-care diagnostics and healthcare accessibility. The safety and biocompatibility of nanomaterials are also addressed, crucial for the clinical translation of these innovations.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Chopra, Dimple Sethi. "Nanocomposites in Drug Delivery and Imaging Applications". In Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials, 1539–54. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-8591-7.ch063.

Texto completo da fonte

Resumo:

Nanocomposites are a class of materials in which one or more phases with nanoscale dimensions are embedded in a metal, ceramic, or polymer matrix. The properties of nanocomposites depend on matrix, loading, degree of dispersion, size, shape, and orientation of the nanoscale phase and interaction between the matrix and the nanoscale phase. Nanocomposites are generally prepared using direct melt intercalation. The formation of nanocomposite is ascertained by XRD pattern, FTIR spectra, electron microscopy, and thermal analysis like DSC and TGA. Nanocomposites have properties of nanoparticles, multifunctional capabilities, chemical functionalization, huge interphase zone. Novel nanomaterials offer a new chemotherapeutic route for cancer treatment by combining cell imaging and hyperthermia in a synergistic way. In spite of toxicity and safety concerns, multifunctional nanocomposite still interest the researchers because of emergence of versatile properties, better understanding of disease biomarkers, and quest for ways to improve biocompatibility.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Chopra, Dimple Sethi. "Nanocomposites in Drug Delivery and Imaging Applications". In Multifunctional Nanocarriers for Contemporary Healthcare Applications, 415–30. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-4781-5.ch015.

Texto completo da fonte

Resumo:

Estilos ABNT, Harvard, Vancouver, APA, etc.

Trabalhos de conferências sobre o assunto "Nanoscale chemical imaging"

Greaves, George E., Holger W. Auner, Alexandra E. Porter e Chris C. Phillips. "Nanoscale Mid-IR Spectroscopic Imaging of Cellular Ultrastructure." In Imaging Systems and Applications, ITh5C.2. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/isa.2024.ith5c.2.

Texto completo da fonte

Resumo:

Our knowledge of cells’ internal organelles, comes mostly from EM but here we image them optically, for the first time. Our ~20nm resolution beats diffraction by ~400x, and our mid-IR spectroscopy gives lable-free chemical contrast.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Meng, Zhao-Dong, En-Ming You, Jun Yi e Zhong-Qun Tian. "Single-molecule MIR absorption detection and nanoscale imaging". In CLEO: Applications and Technology, JTh2A.123. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.jth2a.123.

Texto completo da fonte

Resumo:

Near-field MIR detection exhibits tremendous potential in sub-diffraction optics, particularly in fields such as plasmonics, polariton research, nanoscale chemical identification, and bio-medical studies. However, the limited sensitivity of MIR detection in the near field poses significant insufficiency in detecting a single molecule. In this study, we introduce the vibration-excited fluorescence (VEF) method, which encodes the vibrational fingerprints into molecular fluorescence thus enables high-efficiency MIR detection. We combine this method with the scattering type of scanning near-field microscopy (s-SNOM) to enhance its capabilities. The VEF method demonstrates ultrahigh sensitivity at the level of individual molecules, which is achieved by pre-exciting vibrational states of molecules in microspheres on film (MSoF) using single-wavelength MIR radiation. The activated molecules are subsequently pumped to electronic excitation to emit fluorescence, thus converting MIR absorption into fluorescence intensity variation. Fluorescence change can be captured at the sensitivity of one single photon, which has not been achieved by MIR detection method. Based on our quantitative calibration, the VEF technique improves MIR absorption detection efficiency by eight orders of magnitude, thus enabling single-molecule detection. Leveraging the power of SNOM, this approach exhibits ultrahigh sensitivity in identifying nanoscale chemical heterogeneity at the molecular level.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Sanap, Balaji, Takuo Tanaka e Taka-aki Yano. "SERS Detection of Chemical Reactions Induced by Optical Heat". In JSAP-Optica Joint Symposia, 17a_A34_5. Washington, D.C.: Optica Publishing Group, 2024. https://doi.org/10.1364/jsapo.2024.17a_a34_5.

Texto completo da fonte

Resumo:

Surface Enhanced Raman Scattering (SERS) is a powerful technique that enables molecular fingerprint-based ultra-sensitive detection through an enhanced electromagnetic field generated by plasmonic metal nanoparticles. This technique has found extensive use in various fields, including chemical sensing, biological imaging, and photochemical reactions, due to its ability to enhance reaction rates and decrease energy barriers at the nanoscale.

Estilos ABNT, Harvard, Vancouver, APA, etc.

Xia, Qing, e Ji-Xin Cheng. "Mid-infrared photothermal microscopy: imaging chemicals and chemistry on the nanoscale". In Enhanced Spectroscopies and Nanoimaging 2024, editado por Prabhat Verma e Yung Doug Suh, 36. SPIE, 2024. http://dx.doi.org/10.1117/12.3028124.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Kuznetsov, Ilya, Jorge Filevich, Feng Dong, Mark Woolston, Weilun Chao, Erik H. Anderson, Elliot R. Bernstein, Dean C. Crick, Jorge J. Rocca e Carmen S. Menoni. "Ultrasensivite three dimensional nanoscale chemical imaging". In 2015 IEEE Photonics Conference (IPC). IEEE, 2015. http://dx.doi.org/10.1109/ipcon.2015.7323706.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Zenobi, Renato. "Tip-enhanced Raman spectroscopy for nanoscale chemical analysis and imaging". In Optical Sensors, editado por Robert A. Lieberman, Francesco Baldini e Jiri Homola. SPIE, 2018. http://dx.doi.org/10.1117/12.2271262.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Rose, Volker, John W. Freeland, R. Garrett, I. Gentle, K. Nugent e S. Wilkins. "Nanoscale chemical imaging using synchrotron x-ray enhanced scanning tunneling microscopy". In SRI 2009, 10TH INTERNATIONAL CONFERENCE ON RADIATION INSTRUMENTATION. AIP, 2010. http://dx.doi.org/10.1063/1.3463236.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Menoni, Carmen S. "Nanoscale chemical imaging by extreme ultraviolet laser ablation time of flight spectrometry". In Compact EUV & X-ray Light Sources. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/euvxray.2018.et2b.1.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Menoni, Carmen S., Ilya Kuznetsov e Jorge J. Rocca. "Nanoscale Three Dimensional Chemical Imaging by Extreme Ultraviolet Laser Ablation Mass Spectrometry". In Latin America Optics and Photonics Conference. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/laop.2018.tu3e.1.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Minn, Khant, Blake Birmingham, Howard Lee e Zhenrong Zhang. "Nano-focusing of light with optical fiber probe for nanoscale chemical imaging". In Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXI, editado por Israel Gannot e Katy Roodenko. SPIE, 2021. http://dx.doi.org/10.1117/12.2581553.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Relatórios de organizações sobre o assunto "Nanoscale chemical imaging"

Lal, Surbhi, e Martha Alexander. A Multimodality Ultramicrospectroscope (MUMS): Nanoscale Imaging with Integrated Spectroscopies for Chemical and Biomolecular Identification. Fort Belvoir, VA: Defense Technical Information Center, novembro de 2010. http://dx.doi.org/10.21236/ada544990.

Texto completo da fonte

Estilos ABNT, Harvard, Vancouver, APA, etc.

Oferecemos descontos em todos os planos premium para autores cujas obras estão incluídas em seleções literárias temáticas. Contate-nos para obter um código promocional único!