Bibliographies thématiques / Nanoscale chemical imaging

Sommaire

  1. Articles de revues
  2. Thèses
  3. Chapitres de livres
  4. Actes de conférences
  5. Rapports d'organisations

Littérature scientifique sur le sujet « Nanoscale chemical imaging »

Auteur : Grafiati
Publié le 25 janvier 2025

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres

Choisissez une source :

Consultez les listes thématiques d’articles de revues, de livres, de thèses, de rapports de conférences et d’autres sources académiques sur le sujet « Nanoscale chemical imaging ».

À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.

Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.

Articles de revues sur le sujet "Nanoscale chemical imaging"

1

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

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
2

Häberle, T., D. Schmid-Lorch, F. Reinhard et J. Wrachtrup. « Nanoscale nuclear magnetic imaging with chemical contrast ». Nature Nanotechnology 10, no 2 (5 janvier 2015) : 125–28. http://dx.doi.org/10.1038/nnano.2014.299.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
3

Stadler, Johannes, Thomas Schmid et Renato Zenobi. « Nanoscale Chemical Imaging of Single-Layer Graphene ». ACS Nano 5, no 10 (7 octobre 2011) : 8442–48. http://dx.doi.org/10.1021/nn2035523.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
4

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, no 3 (mars 2016) : e1501571. http://dx.doi.org/10.1126/sciadv.1501571.

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.
5

Wilson, Andrew J., Dinumol Devasia et Prashant K. Jain. « Nanoscale optical imaging in chemistry ». Chemical Society Reviews 49, no 16 (2020) : 6087–112. http://dx.doi.org/10.1039/d0cs00338g.

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.
6

Retterer, Scott T., Jennifer L. Morrell-Falvey et Mitchel J. Doktycz. « Nano-Enabled Approaches to Chemical Imaging in Biosystems ». Annual Review of Analytical Chemistry 11, no 1 (12 juin 2018) : 351–73. http://dx.doi.org/10.1146/annurev-anchem-061417-125635.

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.
7

Cimatu, K. A., S. M. Mahurin, K. A. Meyer et R. W. Shaw. « Nanoscale Chemical Imaging of Zinc Oxide Nanowire Corrosion ». Journal of Physical Chemistry C 116, no 18 (27 avril 2012) : 10405–14. http://dx.doi.org/10.1021/jp301922a.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
8

Kelly, K. F., E. T. Mickelson, R. H. Hauge, J. L. Margrave et N. J. Halas. « Nanoscale imaging of chemical interactions : Fluorine on graphite ». Proceedings of the National Academy of Sciences 97, no 19 (29 août 2000) : 10318–21. http://dx.doi.org/10.1073/pnas.190325397.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
9

Kumar, Naresh, Bert M. Weckhuysen, Andrew J. Wain et Andrew J. Pollard. « Nanoscale chemical imaging using tip-enhanced Raman spectroscopy ». Nature Protocols 14, no 4 (25 mars 2019) : 1169–93. http://dx.doi.org/10.1038/s41596-019-0132-z.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
10

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

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
Plus de sources

Thèses sur le sujet "Nanoscale chemical imaging"

1

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

Texte intégral
Résumé :
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).
Styles APA, Harvard, Vancouver, ISO, etc.
2

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.

Texte intégral
Résumé :
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
Styles APA, Harvard, Vancouver, ISO, etc.
3

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.

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.

Chapitres de livres sur le sujet "Nanoscale chemical imaging"

1

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

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
2

Ovchinnikova, Olga S. « Toward Nanoscale Chemical Imaging : The Intersection of Scanning Probe Microscopy and Mass Spectrometry ». Dans 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.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
3

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

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.
4

Schmid, Gregor, Martin Obst, Juan Wu et Adam Hitchcock. « 3D Chemical Imaging of Nanoscale Biological, Environmental, and Synthetic Materials by Soft X-Ray STXM Spectrotomography ». Dans 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.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
5

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

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
6

Verrecchia, Eric P., et Luca Trombino. « The Future of Soil Micromorphology ». Dans 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.

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.
7

Liew, Thomas, R. Ji et G. L. Chen. « High Spatial Resolution Chemical Imaging of Tribo- Surfaces in Magnetic Recording ». Dans 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.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
8

Sharma, Rohit, Mr Siddhartha, Mr Ghazi et Ms Sweety Pal. « ADVANCEMENT IN MEDICAL IMAGING : NANOTECHNOLOGY ». Dans 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.

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.
9

Chopra, Dimple Sethi. « Nanocomposites in Drug Delivery and Imaging Applications ». Dans 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.

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.
10

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

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.

Actes de conférences sur le sujet "Nanoscale chemical imaging"

1

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

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.
2

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

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.
3

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

Texte intégral
Résumé :
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.
Styles APA, Harvard, Vancouver, ISO, etc.
4

Xia, Qing, et Ji-Xin Cheng. « Mid-infrared photothermal microscopy : imaging chemicals and chemistry on the nanoscale ». Dans Enhanced Spectroscopies and Nanoimaging 2024, sous la direction de Prabhat Verma et Yung Doug Suh, 36. SPIE, 2024. http://dx.doi.org/10.1117/12.3028124.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
5

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

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
6

Zenobi, Renato. « Tip-enhanced Raman spectroscopy for nanoscale chemical analysis and imaging ». Dans Optical Sensors, sous la direction de Robert A. Lieberman, Francesco Baldini et Jiri Homola. SPIE, 2018. http://dx.doi.org/10.1117/12.2271262.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
7

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

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
8

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

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
9

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

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
10

Minn, Khant, Blake Birmingham, Howard Lee et Zhenrong Zhang. « Nano-focusing of light with optical fiber probe for nanoscale chemical imaging ». Dans Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXI, sous la direction de Israel Gannot et Katy Roodenko. SPIE, 2021. http://dx.doi.org/10.1117/12.2581553.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.

Rapports d'organisations sur le sujet "Nanoscale chemical imaging"

1

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

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
Vous pouvez également être intéressé par les bibliographies sur le sujet « Nanoscale chemical imaging » pour d’autres types de sources :
Articles de revues
Nous offrons des réductions sur tous les plans premium pour les auteurs dont les œuvres sont incluses dans des sélections littéraires thématiques. Contactez-nous pour obtenir un code promo unique!

Vers la bibliographie