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Articoli di riviste sul tema "Tip-Enhanced and Surface-Enhanced Raman Spectoscopies"

Autore: Grafiati

Pubblicato: 25 gennaio 2025

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1

Bortchagovsky, Eugene G., Stefan Klein e Ulrich C. Fischer. "Surface plasmon mediated tip enhanced Raman scattering". Applied Physics Letters 94, n. 6 (9 febbraio 2009): 063118. http://dx.doi.org/10.1063/1.3081416.

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Pettinger, Bruno, Gennaro Picardi, Rolf Schuster e Gerhard Ertl. "Surface-enhanced and STM-tip-enhanced Raman Spectroscopy at Metal Surfaces". Single Molecules 3, n. 5-6 (novembre 2002): 285–94. http://dx.doi.org/10.1002/1438-5171(200211)3:5/6<285::aid-simo285>3.0.co;2-x.

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3

Hennemann, L. E., A. J. Meixner e D. Zhang. "Surface- and tip-enhanced Raman spectroscopy of DNA". Spectroscopy 24, n. 1-2 (2010): 119–24. http://dx.doi.org/10.1155/2010/428026.

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Calf thymus DNA adsorbed on a rough gold substrate or on an atomically smooth gold (111) surface has been investigated by collecting its unique Raman fingerprints using either surface-enhanced Raman scattering (SERS) or tip-enhanced Raman scattering (TERS). A monolayer coverage of DNA strands adsorbed at both the irregular rough edges of evaporated gold grids and at gold nanoparticles is detected by SERS. Highly improved sensitivity down to single DNA strand spectroscopic determination is accomplished by TERS providing an enhancement factor of at least 1400. Based on our experimental results, we propose that TERS is a promising technique to study the DNA–drug molecule interaction on the level of a single DNA strand.

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4

Pettinger, Bruno. "Single-molecule surface- and tip-enhanced raman spectroscopy". Molecular Physics 108, n. 16 (20 agosto 2010): 2039–59. http://dx.doi.org/10.1080/00268976.2010.506891.

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5

Hartman, Thomas, Caterina S. Wondergem, Naresh Kumar, Albert van den Berg e Bert M. Weckhuysen. "Surface- and Tip-Enhanced Raman Spectroscopy in Catalysis". Journal of Physical Chemistry Letters 7, n. 8 (14 aprile 2016): 1570–84. http://dx.doi.org/10.1021/acs.jpclett.6b00147.

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6

Wang, Jingang, Wenhua Qiao e Xijiao Mu. "Au Tip-Enhanced Raman Spectroscopy for Catalysis". Applied Sciences 8, n. 11 (23 ottobre 2018): 2026. http://dx.doi.org/10.3390/app8112026.

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Plasmon-driven chemical reactions have been a prospective field for surface plasmon resonance and tip-enhanced Raman scattering. In this review, the principles of tip-enhanced Raman spectroscopy (TERS) are first introduced. Following this, the use of Au TERS for plasmon-driven synthesis catalysis is introduced. Finally, the use of Au TERS for catalysis of dissociation reactions is discussed. This review can provide a deeper understanding of Au TERS for plasmon-driven catalysis.

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7

Bello, J. M., e T. Vo-Dinh. "Surface-Enhanced Raman Scattering Fiber-Optic Sensor". Applied Spectroscopy 44, n. 1 (gennaio 1990): 63–69. http://dx.doi.org/10.1366/0003702904085877.

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A fiber-optic system was developed for exciting and collecting surface-enhanced Raman scattering (SERS) signals generated from a sensing plate tip having silver-coated microparticles deposited on a glass support. Various fiber parameters, such as fiber type, fiber-substrate geometry, and other experimental parameters, were investigated to obtain the optimum conditions for the SERS fiber-optic device. In addition, analytical figures of merit relevant to the performance of the SERS fiber-optic sensor, such as SERS spectral characteristics, reproducibility, linear dynamic range, and limit of detection, were also investigated.

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8

Zhang, Jin Z., Damon A. Wheeler, Adam M. Schwartzberg e Jianying Shi. "Basics and practice of surface enhanced Raman scattering (SERS) and tip enhanced Raman scattering (TERS)". Biomedical Spectroscopy and Imaging 3, n. 2 (2014): 121–59. http://dx.doi.org/10.3233/bsi-140086.

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9

Kaemmer, Stefan B., Ton Ruiter e Bede Pittenger. "Atomic Force Microscopy with Raman and Tip-Enhanced Raman Spectroscopy". Microscopy Today 20, n. 6 (novembre 2012): 22–27. http://dx.doi.org/10.1017/s1551929512000855.

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Both atomic force microscopy (AFM) and Raman spectroscopy are techniques used to gather information about the surface properties of a sample. There are many reasons to combine these two technologies, and this article looks both at the complementary information gained from the techniques and how a researcher having access to a combined system can benefit from the additional information available.

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10

Rasmussen, A., e V. Deckert. "Surface- and tip-enhanced Raman scattering of DNA components". Journal of Raman Spectroscopy 37, n. 1-3 (gennaio 2006): 311–17. http://dx.doi.org/10.1002/jrs.1480.

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11

Pahlow, Susanne, Anne März, Barbara Seise, Katharina Hartmann, Isabel Freitag, Evelyn Kämmer, René Böhme et al. "Bioanalytical application of surface- and tip-enhanced Raman spectroscopy". Engineering in Life Sciences 12, n. 2 (aprile 2012): 131–43. http://dx.doi.org/10.1002/elsc.201100056.

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12

Schultz, Jeremy F., Sayantan Mahapatra, Linfei Li e Nan Jiang. "The Expanding Frontiers of Tip-Enhanced Raman Spectroscopy". Applied Spectroscopy 74, n. 11 (21 agosto 2020): 1313–40. http://dx.doi.org/10.1177/0003702820932229.

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Abstract (sommario):

Fundamental understanding of chemistry and physical properties at the nanoscale enables the rational design of interface-based systems. Surface interactions underlie numerous technologies ranging from catalysis to organic thin films to biological systems. Since surface environments are especially prone to heterogeneity, it becomes crucial to characterize these systems with spatial resolution sufficient to localize individual active sites or defects. Spectroscopy presents as a powerful means to understand these interactions, but typical light-based techniques lack sufficient spatial resolution. This review describes the growing number of applications for the nanoscale spectroscopic technique, tip-enhanced Raman spectroscopy (TERS), with a focus on developments in areas that involve measurements in new environmental conditions, such as liquid, electrochemical, and ultrahigh vacuum. The expansion into unique environments enables the ability to spectroscopically define chemistry at the spatial limit. Through the confinement and enhancement of light at the apex of a plasmonic scanning probe microscopy tip, TERS is able to yield vibrational fingerprint information of molecules and materials with nanoscale resolution, providing insight into highly localized chemical effects.

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13

Liu, Yanqi, Yan Zhao, Lisheng Zhang, Yinzhou Yan e Yijian Jiang. "Controllable plasmon-induced catalytic reaction by surface-enhanced and tip-enhanced Raman spectroscopy". Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 219 (agosto 2019): 539–46. http://dx.doi.org/10.1016/j.saa.2019.04.086.

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14

Stadler, Johannes, Thomas Schmid, Lothar Opilik, Phillip Kuhn, Petra S. Dittrich e Renato Zenobi. "Tip-enhanced Raman spectroscopic imaging of patterned thiol monolayers". Beilstein Journal of Nanotechnology 2 (30 agosto 2011): 509–15. http://dx.doi.org/10.3762/bjnano.2.55.

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Full spectroscopic imaging by means of tip-enhanced Raman spectroscopy (TERS) was used to measure the distribution of two isomeric thiols (2-mercaptopyridine (2-PySH) and 4-mercaptopyridine (4-PySH)) in a self-assembled monolayer (SAM) on a gold surface. From a patterned sample created by microcontact printing, an image with full spectral information in every pixel was acquired. The spectroscopic data is in good agreement with the expected molecular distribution on the sample surface due to the microcontact printing process. Using specific marker bands at 1000 cm−1 for 2-PySH and 1100 cm−1 for 4-PySH, both isomers could be localized on the surface and semi-quantitative information was deduced from the band intensities. Even though nanometer size resolution information was not required, the large signal enhancement of TERS was employed here to detect a monolayer coverage of weakly scattering analytes that were not detectable with normal Raman spectroscopy, emphasizing the usefulness of TERS.

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15

Sheremet, E., A. G. Milekhin, R. D. Rodriguez, T. Weiss, M. Nesterov, E. E. Rodyakina, O. D. Gordan et al. "Surface- and tip-enhanced resonant Raman scattering from CdSe nanocrystals". Physical Chemistry Chemical Physics 17, n. 33 (2015): 21198–203. http://dx.doi.org/10.1039/c4cp05087h.

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16

Dorozhkin, P., E. Kuznetsov, A. Schokin, S. Timofeev e V. Bykov. "AFM + Raman Microscopy + SNOM + Tip-Enhanced Raman: Instrumentation and Applications". Microscopy Today 18, n. 6 (novembre 2010): 28–32. http://dx.doi.org/10.1017/s1551929510000982.

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Abstract (sommario):

Atomic Force Microscopy (AFM) has developed into a very powerful tool for characterization of surfaces and nanoscale objects. Many physical properties of an object can be studied by AFM with nanometer-scale resolution. Local stiffness, elasticity, conductivity, capacitance, magnetization, surface potential and work function, friction, piezo response—these and many other physical properties can be studied with over 30 AFM modes. What is typically lacking in information provided by AFM studies is the chemical composition of the sample and information about its crystal structure. To obtain this information other characterization techniques are required, such as Raman and fluorescence microscopy. The Raman effect (inelastic light scattering) provides extensive information about sample chemical composition, quality of crystal structure, crystal orientation, presence of impurities and defects, and so on. Information provided by Raman and fluorescence spectroscopy is complementary to the information obtained by AFM. So it is a natural requirement in many research fields to integrate these techniques in one piece of equipment—to provide comprehensive physical, chemical, and structural characterization of the same object. Of course, for routine studies of various samples, it is important to be able to obtain AFM and Raman/fluorescence images of exactly the same sample area, preferably with the same sample scan.

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17

Zrimsek, Alyssa B., Naihao Chiang, Michael Mattei, Stephanie Zaleski, Michael O. McAnally, Craig T. Chapman, Anne-Isabelle Henry, George C. Schatz e Richard P. Van Duyne. "Single-Molecule Chemistry with Surface- and Tip-Enhanced Raman Spectroscopy". Chemical Reviews 117, n. 11 (8 dicembre 2016): 7583–613. http://dx.doi.org/10.1021/acs.chemrev.6b00552.

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18

Zaleski, Stephanie, Andrew J. Wilson, Michael Mattei, Xu Chen, Guillaume Goubert, M. Fernanda Cardinal, Katherine A. Willets e Richard P. Van Duyne. "Investigating Nanoscale Electrochemistry with Surface- and Tip-Enhanced Raman Spectroscopy". Accounts of Chemical Research 49, n. 9 (7 settembre 2016): 2023–30. http://dx.doi.org/10.1021/acs.accounts.6b00327.

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19

SAITO, Y., M. MOTOHASHI, N. HAYAZAWA e S. KAWATA. "Stress imagining of semiconductor surface by tip-enhanced Raman spectroscopy". Journal of Microscopy 229, n. 2 (febbraio 2008): 217–22. http://dx.doi.org/10.1111/j.1365-2818.2008.01889.x.

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20

Schultz, Zachary D., Stephan J. Stranick e Ira W. Levin. "Tip-Enhanced Raman Spectroscopy and Imaging: An Apical Illumination Geometry". Applied Spectroscopy 62, n. 11 (novembre 2008): 1173–79. http://dx.doi.org/10.1366/000370208786401635.

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Results are presented illustrating the use of tip-enhanced Raman spectroscopy (TERS) and imaging in a top-illumination geometry. A radially polarized beam is used to generate an electric field component in the direction of beam propagation, normal to the surface, resulting in a 5× increased enhancement compared to a linearly polarized beam. This multiplicative enhancement facilitates a discrimination of the near-field signal from the far-field Raman background. The top illumination configuration facilitates the application of TERS for investigating molecules on a variety of surfaces, such as Au, glass, and Si. The near-field Raman spectra of Si(100), rhodamine B, brilliant cresyl blue, and single wall carbon nanotubes are presented. Sufficient enhancement is obtained to permit a sub-diffraction-limited resolution Raman imaging of the surface distribution of large bundles of carbon nanotubes of various diameters.

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21

Pettinger, Bruno, Gennaro Picardi, Rolf Schuster e Gerhard Ertl. "Surface-enhanced and STM tip-enhanced Raman spectroscopy of CN − ions at gold surfaces". Journal of Electroanalytical Chemistry 554-555 (settembre 2003): 293–99. http://dx.doi.org/10.1016/s0022-0728(03)00242-0.

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22

Swiech, D., Y. Ozaki, Y. Kim e E. Proniewicz. "Correction: Surface- and tip-enhanced Raman scattering of bradykinin onto the colloidal suspended Ag surface". Physical Chemistry Chemical Physics 17, n. 29 (2015): 19672. http://dx.doi.org/10.1039/c5cp90117k.

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23

Sereda, Valentin, e Igor K. Lednev. "Two Mechanisms of Tip Enhancement of Raman Scattering by Protein Aggregates". Applied Spectroscopy 71, n. 1 (20 luglio 2016): 118–28. http://dx.doi.org/10.1177/0003702816651890.

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Tip-enhanced Raman spectroscopy (TERS) is a powerful tool for probing the surface of biological species with nanometer spatial resolution. Here, we report the TER spectra of an individual insulin fibril, the protein cast film and a short peptide (LVEALYL) microcrystal mimicking the fibril core. Two different types of TER spectra were acquired depending on the “roughness” of the probed surface at the molecular level. A fully reproducible, low-intensity, normal Raman-type spectrum was characteristic of the top flat surface of the microcrystal while highly variable, higher intensity TER spectra were obtained for the edges of the microcrystal, cast film, and fibril. As a result, two tip enhancement mechanisms of Raman scattering, long- and short-range, were proposed by analogy with the physical and chemical enhancement mechanisms, respectively, known for surface-enhanced Raman spectroscopy.

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24

El-Khoury, P. Z., P. Abellan, Y. Gong, F. S. Hage, J. Cottom, A. G. Joly, R. Brydson, Q. M. Ramasse e W. P. Hess. "Visualizing surface plasmons with photons, photoelectrons, and electrons". Analyst 141, n. 12 (2016): 3562–72. http://dx.doi.org/10.1039/c6an00308g.

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Multidimensional imaging of surface plasmons via hyperspectral dark field optical microscopy, tip-enhanced Raman scattering, nonlinear photoemission electron microscopy, and electron energy loss spectroscopy.

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25

Anderson, Mark S. "Concurrent surface enhanced infrared and Raman spectroscopy with single molecule sensitivity". Review of Scientific Instruments 94, n. 2 (1 febbraio 2023): 025103. http://dx.doi.org/10.1063/5.0136908.

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Surface enhanced infrared absorption (SEIRA) and surface enhanced Raman Spectroscopy (SERS) were simultaneously measured from the same location on plasmonically active substrates. The spectra were acquired using an optical photothermal infrared spectrometer coupled with a Raman spectrometer. The sensitivity of this approach enables exceptionally small quantities of molecules to be interrogated while providing complementary information from both infrared and Raman spectroscopy. This arrangement provides additional improvement of SEIRA through the enhancement of both the optical photothermal detector signal and the infrared absorption. The plasmonic substrates tested were silver nanospheres and a gold coated atomic force microscope tip. The concurrent acquisition of SEIRA and SERS is further demonstrated by nano-sampling material onto an atomic force microscope tip. The analytes, Buckminsterfullerene and 1,2-bis(4-pyridyl) ethylene, were analyzed individually and as mixtures. The concurrent acquisition of SERIA and SERS is a unique approach. It has general applications in trace surface analysis and for the analysis of returned planetary samples.

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26

Voylov, Dmitry N., Vera Bocharova, Nickolay V. Lavrik, Ivan Vlassiouk, Georgios Polizos, Alexei Volodin, Yury M. Shulga et al. "Noncontact tip-enhanced Raman spectroscopy for nanomaterials and biomedical applications". Nanoscale Advances 1, n. 9 (2019): 3392–99. http://dx.doi.org/10.1039/c9na00322c.

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Capocefalo, Angela, Tanja Deckert-Gaudig, Francesco Brasili, Paolo Postorino e Volker Deckert. "Unveiling the interaction of protein fibrils with gold nanoparticles by plasmon enhanced nano-spectroscopy". Nanoscale 13, n. 34 (2021): 14469–79. http://dx.doi.org/10.1039/d1nr03190b.

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A combined label-free spectroscopic approach at the nanoscale, based on tip-enhanced and surface-enhanced Raman spectroscopies, enabled to identify the key mechanisms in the degradation of amyloid fibrils mediated by gold nanoparticles.

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Zhang, Ping, Xirui Tian, Shaoxiang Sheng, Chen Ma, Linjie Chen, Baojie Feng, Peng Cheng et al. "Vibrational Property of α-Borophene Determined by Tip-Enhanced Raman Spectroscopy". Molecules 27, n. 3 (27 gennaio 2022): 834. http://dx.doi.org/10.3390/molecules27030834.

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We report a Raman characterization of the α borophene polymorph by scanning tunneling microscopy combined with tip-enhanced Raman spectroscopy. A series of Raman peaks were discovered, which can be well related with the phonon modes calculated based on an asymmetric buckled α structure. The unusual enhancement of high-frequency Raman peaks in TERS spectra of α borophene is found and associated with its unique buckling when landed on the Ag(111) surface. Our paper demonstrates the advantages of TERS, namely high spatial resolution and selective enhancement rule, in studying the local vibrational properties of materials in nanoscale.

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Barrios, Carlos A., Andrey V. Malkovskiy, Alexander Kisliuk, Alexei P. Sokolov e Mark D. Foster. "Toward Robust High Resolution Chemical Imaging". Microscopy Today 17, n. 3 (maggio 2009): 36–37. http://dx.doi.org/10.1017/s1551929500050094.

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Resonant plasmon excitations at the surface of noble metals can localize and amplify an electromagnetic field in a very small volume and are the enabling element of surface enhanced optical microscopies. Tip enhanced Raman spectroscopy (TERS) combines scanning probe microscopy (SPM) with Raman spectroscopy, taking advantage of this enhancing mechanism. So far a 20 nm lateral resolution in chemical imaging of a surface has been achieved. So far a 20 nm lateral resolution in chemical imaging of a surface has been achieved.

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Milekhin, Ilya A., Alexander G. Milekhin e Dietrich R. T. Zahn. "Surface- and Tip-Enhanced Raman Scattering by CdSe Nanocrystals on Plasmonic Substrates". Nanomaterials 12, n. 13 (26 giugno 2022): 2197. http://dx.doi.org/10.3390/nano12132197.

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This work presents an overview of the latest results and new data on the optical response from spherical CdSe nanocrystals (NCs) obtained using surface-enhanced Raman scattering (SERS) and tip-enhanced Raman scattering (TERS). SERS is based on the enhancement of the phonon response from nanoobjects such as molecules or inorganic nanostructures placed on metal nanostructured substrates with a localized surface plasmon resonance (LSPR). A drastic SERS enhancement for optical phonons in semiconductor nanostructures can be achieved by a proper choice of the plasmonic substrate, for which the LSPR energy coincides with the laser excitation energy. The resonant enhancement of the optical response makes it possible to detect mono- and submonolayer coatings of CdSe NCs. The combination of Raman scattering with atomic force microscopy (AFM) using a metallized probe represents the basis of TERS from semiconductor nanostructures and makes it possible to investigate their phonon properties with nanoscale spatial resolution. Gap-mode TERS provides further enhancement of Raman scattering by optical phonon modes of CdSe NCs with nanometer spatial resolution due to the highly localized electric field in the gap between the metal AFM tip and a plasmonic substrate and opens new pathways for the optical characterization of single semiconductor nanostructures and for revealing details of their phonon spectrum at the nanometer scale.

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Gu, Kai, Ming Sun e Yang Zhang. "Tip-Enhanced Raman Spectroscopy Based on Spiral Plasmonic Lens Excitation". Sensors 22, n. 15 (28 luglio 2022): 5636. http://dx.doi.org/10.3390/s22155636.

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In this study, we proposed the idea of replacing the traditional objective lens in bottom-illumination mode with a plasmonic lens (PL) to achieve tip-enhanced Raman spectroscopy (TERS). The electric field energy of surface plasmon polaritons (SPPs) of the spiral PL was found to be more concentrated at the focal point without any sidelobe using the finite-difference time domain (FDTD) method compared with that of a symmetry-breaking PL. This property reduces far-field background noise and increases the excitation efficiency of the near-field Raman signal. The disadvantage of only the near-field Raman scattering of samples at the center of the structure being detected when using an ordinary PL in TERS is overcome by using our proposed method of changing only the polarization of the incident light.

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Taguchi, Atsushi, Jun Yu, Prabhat Verma e Satoshi Kawata. "Optical antennas with multiple plasmonic nanoparticles for tip-enhanced Raman microscopy". Nanoscale 7, n. 41 (2015): 17424–33. http://dx.doi.org/10.1039/c5nr05022g.

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Sheremet, Evgeniya, Raul D. Rodriguez, Dietrich R. T. Zahn, Alexander G. Milekhin, Ekaterina E. Rodyakina e Alexander V. Latyshev. "Surface-enhanced Raman scattering and gap-mode tip-enhanced Raman scattering investigations of phthalocyanine molecules on gold nanostructured substrates". Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena 32, n. 4 (luglio 2014): 04E110. http://dx.doi.org/10.1116/1.4890126.

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Nie, Xiao-Lei, Hai-Ling Liu, Zhong-Qin Pan, Saud Asif Ahmed, Qi Shen, Jin-Mei Yang, Jian-Bin Pan et al. "Recognition of plastic nanoparticles using a single gold nanopore fabricated at the tip of a glass nanopipette". Chemical Communications 55, n. 45 (2019): 6397–400. http://dx.doi.org/10.1039/c9cc01358j.

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Merlen, A., M. Chaigneau e S. Coussan. "Vibrational modes of aminothiophenol: a TERS and DFT study". Physical Chemistry Chemical Physics 17, n. 29 (2015): 19134–38. http://dx.doi.org/10.1039/c5cp01579k.

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Schultz, Zachary D., James M. Marr e Hao Wang. "Tip enhanced Raman scattering: plasmonic enhancements for nanoscale chemical analysis". Nanophotonics 3, n. 1-2 (1 aprile 2014): 91–104. http://dx.doi.org/10.1515/nanoph-2013-0040.

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Abstract (sommario):

AbstractTip enhanced Raman scattering (TERS) is an emerging technique that uses a metalized scanning probe microscope tip to spatially localize electric fields that enhances Raman scattering enabling chemical imaging on nanometer dimensions. Arising from the same principles as surface enhanced Raman scattering (SERS), TERS offers unique advantages associated with controling the size, shape, and location of the enhancing nanostructure. In this article we discuss the correlations between current understanding of SERS and how this relates to TERS, as well as how TERS provides new understanding and insights. The relationship between plasmon resonances and Raman enhancements is emphasized as the key to obtaining optimal TERS results. Applications of TERS, including chemical analysis of carbon nanotubes, organic molecules, inorganic crystals, nucleic acids, proteins, cells and organisms, are used to illustrate the information that can be gained. Under ideal conditions TERS is capable of single molecule sensitivity and sub-nanometer spatial resolution. The ability to control plasmonic enhancements for chemical analysis suggests new experiments and opportunities to understand molecular composition and interactions on the nanoscale.

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Lee, Joonhee, Nicholas Tallarida, Laura Rios e V. Ara Apkarian. "The Raman Spectrum of a Single Molecule on an Electrochemically Etched Silver Tip". Applied Spectroscopy 74, n. 11 (18 settembre 2020): 1414–22. http://dx.doi.org/10.1177/0003702820949274.

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We recorded the Raman spectrum of a single azobenzene thiol molecule upon picking it up from an atomically flat gold surface, using an electrochemically etched silver tip, in an ultrahigh vacuum cryogenic scanning tunneling microscope. While suppressed at the junction, the stationary spectrum appeared once the molecule was transferred to the tip, with line intensities that increased by a factor of ∼5 as the tip was retracted from 1 nm to 161 nm. The effect, and the enhanced tensorial Raman spectrum was reproduced using an explicit treatment of the electromagnetic fields to identify a cis-azobenzene thiol molecule, adsorbed on a nanometric asperity removed from the tip apex, lying in the plane normal to the tip z-axis, with enhanced incident and radiative local fields polarized in the same plane. Tips decorated with asperities break the rules and give unique insights on Raman driven by cavity modes of a plasmonic junction.

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Zhang, Jingran, Yongda Yan, Zhenjiang Hu e Xuesen Zhao. "Fabrication of copper substrates for surface-enhanced Raman scattering using the microscratching method". Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 232, n. 7 (1 settembre 2016): 1310–15. http://dx.doi.org/10.1177/0954405416666908.

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The method of a tip-based microscratching is used to fabricate micro/nano structures on single crystal copper (110) and (111) planes under room temperature. The surface-enhanced Raman scattering enhancement performance of the structured Cu surface has been studied by rhodamine 6G probe molecules. Such micro/nano structures can be machined by varying the scratching parameters such as the feed and the normal load. Experimental results show that the high surface-enhanced Raman scattering enhancement is attributed to the nanostructures formed by pile-ups between adjacent grooves and nanocracks at the bottom of the microsquare. In addition, the Raman intensity of the crystallographic plane (110) is stronger than that of the crystallographic plane (111). This work verifies that the microscratching method is a feasible way to machine active surface-enhanced Raman scattering substrates on Cu surfaces with low cost and high efficiency.

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Kazemi-Zanjani, Nastaran, Pierangelo Gobbo, Ziyan Zhu, Mark S. Workentin e François Lagugné-Labarthet. "High-resolution Raman imaging of bundles of single-walled carbon nanotubes by tip-enhanced Raman spectroscopy". Canadian Journal of Chemistry 93, n. 1 (gennaio 2015): 51–59. http://dx.doi.org/10.1139/cjc-2014-0247.

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Bundles of single-walled carbon nanotubes (SWCNTs) prepared by plasma torch method and further purified, are deposited over a glass coverslip to estimate the spatial resolution of tip-enhanced Raman spectroscopy measurements. For this purpose, near-field Raman maps and spectra of isolated bundles of carbon nanotubes are collected using optimized experimental conditions such as a tightly focused beam using a 1.4 numerical aperture oil immersion microscope objective and a gold coated atomic force microscope probe illuminated by a radially polarized 632.8 nm wavelength to selectively excite the localized surface plasmon confined at the extremity of the tip. The near-field nature of the collected Raman signals is evaluated through measuring the decay of the Raman signal with respect to the tip-sample separation.

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40

Kou, Xiaolong, Qian Zhou, Dong Wang, Jinghe Yuan, Xiaohong Fang e Lijun Wan. "High-resolution imaging of graphene by tip-enhanced coherent anti-Stokes Raman scattering". Journal of Innovative Optical Health Sciences 12, n. 01 (gennaio 2019): 1841003. http://dx.doi.org/10.1142/s1793545818410031.

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Abstract (sommario):

Coherent anti-Stokes Raman scattering (CARS) is able to enhance molecular signals by vibrational coherence compared to weak Raman signal. The surface or tip enhancement are successful technologies, which make it possible for Raman to detect single molecule with nanometer resolution. However, due to technical difficulties, tip-enhanced CARS (TECARS) is not as successful as expected. For single molecular detection, high sensitivity and resolution are two main challenges. Here, we reported the first single atom layer TECARS imaging on Graphene with the highest resolution about 20[Formula: see text]nm, which has ever been reported. The highest EF[Formula: see text] is about 104, the similar order of magnitude with SECARS (EF of tip is usually smaller than that of substrates). Such resolution and sensitivity is promising for medical, biology and chemical applications in the future.

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41

Guo, Yinsheng, Song Jiang, Xu Chen, Michael Mattei, Jon A. Dieringer, John P. Ciraldo e Richard P. Van Duyne. "Using a Fabry–Perot Cavity to Augment the Enhancement Factor for Surface-Enhanced Raman Spectroscopy and Tip-Enhanced Raman Spectroscopy". Journal of Physical Chemistry C 122, n. 26 (12 giugno 2018): 14865–71. http://dx.doi.org/10.1021/acs.jpcc.8b05253.

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42

Pettinger, Bruno, Katrin F. Domke, Dai Zhang, Gennaro Picardi e Rolf Schuster. "Tip-enhanced Raman scattering: Influence of the tip-surface geometry on optical resonance and enhancement". Surface Science 603, n. 10-12 (giugno 2009): 1335–41. http://dx.doi.org/10.1016/j.susc.2008.08.033.

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43

Todd, Elizabeth A., e Michael D. Morris. "Micron Surface-Enhanced Raman Spectroscopy of Intact Biological Organisms and Model Systems". Applied Spectroscopy 48, n. 5 (maggio 1994): 545–48. http://dx.doi.org/10.1366/0003702944924790.

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Abstract (sommario):

Surface-enhanced Raman spectra have been obtained within intact zebrafish embryos and inside the 500-fL pores of a Nucleopore filter membrane with the use of coated microelectrodes with 1–3 μm active silver tip diameters. The spectra obtained demonstrate the microelectrode's ability to penetrate biological membranes as well as restricted volumes.

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44

Dab, C., C. Awada, A. Merlen e A. Ruediger. "Near-field chemical mapping of gold nanostructures using a functionalized scanning probe". Physical Chemistry Chemical Physics 19, n. 46 (2017): 31063–71. http://dx.doi.org/10.1039/c7cp06004a.

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Abstract (sommario):

We report on photochemical and photophysical properties produced by Surface Plasmon Resonance (SPR) on metallic nanograins by means of high resolution Functionalized Tip-Enhanced Raman Spectroscopy (F-TERS).

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45

Hübner, Jakob, Tanja Deckert-Gaudig, Julien Glorian, Volker Deckert e Denis Spitzer. "Surface characterization of nanoscale co-crystals enabled through tip enhanced Raman spectroscopy". Nanoscale 12, n. 18 (2020): 10306–19. http://dx.doi.org/10.1039/d0nr00397b.

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46

Xiao, Lifu, Karen A. Bailey, Hao Wang e Zachary D. Schultz. "Probing Membrane Receptor–Ligand Specificity with Surface- and Tip- Enhanced Raman Scattering". Analytical Chemistry 89, n. 17 (14 agosto 2017): 9091–99. http://dx.doi.org/10.1021/acs.analchem.7b01796.

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47

Sharma, Gaurav, Tanja Deckert-Gaudig e Volker Deckert. "Tip-enhanced Raman scattering—Targeting structure-specific surface characterization for biomedical samples". Advanced Drug Delivery Reviews 89 (luglio 2015): 42–56. http://dx.doi.org/10.1016/j.addr.2015.06.007.

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48

Zhuang, MuDe, Zheng Liu, Bin Ren e ZhongQun Tian. "Surface bonding on silicon surfaces as probed by tip-enhanced Raman spectroscopy". Science China Chemistry 53, n. 2 (febbraio 2010): 426–31. http://dx.doi.org/10.1007/s11426-010-0068-1.

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49

You, Xiao, Clayton B. Casper, Emily E. Lentz, Dorothy A. Erie e Joanna M. Atkin. "Fabrication of a Biocompatible Mica/Gold Surface for Tip‐Enhanced Raman Spectroscopy". ChemPhysChem 21, n. 3 (8 gennaio 2020): 188–93. http://dx.doi.org/10.1002/cphc.201901002.

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50

Kharlamova, Marianna V. "Advances in Surface-Enhanced and Tip-Enhanced Raman Spectroscopy, Mapping and Methods Combined with Raman Spectroscopy for the Characterization of Perspective Carbon Nanomaterials". Nanomaterials 13, n. 17 (4 settembre 2023): 2495. http://dx.doi.org/10.3390/nano13172495.

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