Journal
CHEMICAL REVIEWS
Volume 117, Issue 7, Pages 5095-5109Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemrev.6b00337
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Funding
- National Key Technologies R&D Program of China [2016YFA0201104]
- National Basic Research Program of China (973 Program) [2015CB932403]
- National Science Foundation of China [61422501, 11374023, 11374152, 11674012, 61176120, 61378059, 11574142, 61521004]
- Beijing Natural Science Foundation [L140007]
- Foundation for the Author of National Excellent Doctoral Dissertation of China [201420]
- National Program for Support of Top-Notch Young Professionals
- 1000 Young Talent Plan
- Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
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In this paper, we review nano-Raman techniques based on aperture scanning near-field optical microscopy (SNOM). Fundamentals of SNOM and aperture tip -based near-field Raman spectroscopy and their applications in key technical issues, including Raman signal intensity and collection time, are introduced. Recent advances in the tip design are discussed, and applications of the aperture-SNOM-based nano-Raman technique are presented. We attempt to identify the most pressing open questions in this field. We believe that, by improving the power transmission efficiency and combining the local field enhancing technique with the tip-enhanced spectroscopy, the performance of aperture-SNOM can be significantly improved. Its nanometer-scale excitation volume and the consequent low background make the aperture-tip technique feasible for many important samples that cannot be measured by other optical nanospectroscopies.
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