1 Gramotnev D K, Bozhevolnyi S I. Nanofocusing of electromagnetic radiation. Nat Photonics8, 13-22 (2013).
2 Stöckle R M, Suh Y D, Deckert V, Zenobi R. Nanoscale chemical analysis by tip-enhanced Raman spectroscopy. Chem Phys Lett318, 131-136 (2000).
DOI:
10.1016/S0009-2614(99)01451-7
3 Jiang S, Zhang Y, Zhang R, Hu C R, Liao M H et al. Distinguishing adjacent molecules on a surface using plasmon-enhanced Raman scattering. Nat Nanotechnol10, 865-869 (2015).
DOI:
10.1038/nnano.2015.170
4 Zhong J H, Jin X, Meng L Y, Wang X, Su H S et al. Probing the electronic and catalytic properties of a bimetallic surface with 3 nm resolution. Nat Nanotechnol12, 132-136 (2017).
5 Li J F, Huang Y F, Ding Y, Yang Z L, Li S B et al. Shell-isolated nanoparticle-enhanced Raman spectroscopy. Nature464, 392-395 (2010).
DOI:
10.1038/nature08907
6 Zhang W D, Li C, Gao K, Lu F F, Liu M et al. Surface-enhanced Raman spectroscopy with Au-nanoparticle substrate fabricated by using femtosecond pulse. Nanotechnology29, 205301 (2018).
DOI:
10.1088/1361-6528/aab294
7 Wei H, Hao F, Huang Y Z, Wang W Z, Nordlander P et al. Polarization dependence of surface-enhanced Raman scattering in gold nanoparticle-nanowire systems. Nano Lett8, 2497-2502 (2008).
DOI:
10.1021/nl8015297
8 Xu K C, Wang Z Y, Tan C F, Kang N, Chen L W et al. Uniaxially stretched flexible surface Plasmon resonance film for versatile surface enhanced Raman scattering diagnostics. ACS Appl Mater Interfaces 9, 26341-26349 (2017).
DOI:
10.1021/acsami.7b06669
9 Neacsu C C, Reider G A, Raschke M B. Second-harmonic generation from nanoscopic metal tips: symmetry selection rules for single asymmetric nanostructures. Phys Rev B71, 201402 (2005).
DOI:
10.1103/PhysRevB.71.201402
11 Jin Y J, Chen L W, Wu M X, Lu X Z, Zhou R et al. Enhanced saturable absorption of the graphene oxide film via photonic nanojets. Opt Mater Express6, 1114-1121 (2016).
DOI:
10.1364/OME.6.001114
12 Chen L W, Zheng X R, Du Z R, Jia B H, Gu M et al. A frozen matrix hybrid optical nonlinear system enhanced by a particle lens. Nanoscale7, 14982-14988 (2015).
DOI:
10.1039/C5NR03304G
13 Du Z R, Chen L W, Kao T S, Wu M X, Hong M H. Improved optical limiting performance of laser-ablation-generated metal nanoparticles due to silica-microsphere-induced local field enhancement. Beilstein J Nanotechnol6, 1199-1204 (2015).
DOI:
10.3762/bjnano.6.122
14 Chen C, Hayazawa N, Kawata S. A 1.7 nm resolution chemical analysis of carbon nanotubes by tip-enhanced Raman imaging in the ambient. Nat Commun5, 3312 (2014).
DOI:
10.1038/ncomms4312
15 Zhang R, Zhang Y, Dong Z C, Jiang S, Zhang C et al. Chemical mapping of a single molecule by plasmon-enhanced Raman scattering. Nature498, 82-86 (2013).
DOI:
10.1038/nature12151
16 Nerkararyan K V. Superfocusing of a surface polariton in a wedge-like structure. Phys Lett A237, 103-105 (1997).
DOI:
10.1016/S0375-9601(97)00722-6
17 Lindquist N C, Nagpal P, Lesuffleur A, Norris D J, Oh S H. Three-dimensional plasmonic nanofocusing. Nano Lett10, 1369-1373 (2010).
DOI:
10.1021/nl904294u
18 Volkov V S, Bozhevolnyi S I, Rodrigo S G, Martín-Moreno L, García-Vidal F J et al. Nanofocusing with channel plasmon polaritons. Nano Lett9, 1278-1282 (2009).
DOI:
10.1021/nl900268v
19 Fernández-Domínguez A I, Maier S A, Pendry J B. Collection and concentration of light by touching spheres: a transformation optics approach. Phys Rev Lett105, 266807 (2010).
DOI:
10.1103/PhysRevLett.105.266807
20 Verhagen E, Polman A, Kuipers L K. Nanofocusing in laterally tapered plasmonic waveguides. Opt Express16, 45-57 (2008).
DOI:
10.1364/OE.16.000045
21 Tugchin B N, Janunts N, Klein A E, Steinert M, Fasold S et al. Plasmonic tip based on excitation of radially polarized conical surface plasmon polariton for detecting longitudinal and transversal fields. ACS Photonics2, 1468-1475 (2015).
DOI:
10.1021/acsphotonics.5b00339
22 Stadler J, Schmid T, Zenobi R. Developments in and practical guidelines for tip-enhanced Raman spectroscopy. Nanoscale4, 1856-1870 (2012).
DOI:
10.1039/C1NR11143D
23 Huang T X, Huang S C, Li M H, Zeng Z C, Wang X et al. Tip-enhanced Raman spectroscopy: tip-related issues. Anal Bioanal Chem407, 8177-8195 (2015).
DOI:
10.1007/s00216-015-8968-8
24 Verma P. Tip-enhanced Raman spectroscopy: technique and recent advances. Chem Rev117, 6447-6466 (2017).
DOI:
10.1021/acs.chemrev.6b00821
25 Ropers C, Neacsu C C, Elsaesser T, Albrecht M, Raschke M B et al. Grating-coupling of surface plasmons onto metallic tips: a nanoconfined light source. Nano Lett7, 2784-2788 (2007).
DOI:
10.1021/nl071340m
26 Neacsu C C, Berweger S, Olmon R L, Saraf L V, Ropers C et al. Near-field localization in plasmonic superfocusing: a nanoemitter on a tip. Nano Lett10, 592-596 (2010).
DOI:
10.1021/nl903574a
27 Berweger S, Atkin J M, Olmon R L, Raschke M B. Light on the tip of a needle: plasmonic nanofocusing for spectroscopy on the nanoscale. J Phys Chem Lett3, 945-952 (2012).
DOI:
10.1021/jz2016268
28 Xu T, Wang C T, Du C L, Luo X G. Plasmonic beam deflector. Opt Express16, 4753-4759 (2008).
DOI:
10.1364/OE.16.004753
29 Xu T, Du C L, Wang C T, Luo X G. Subwavelength imaging by metallic slab lens with nanoslits. Appl Phys Lett91, 201501 (2007).
DOI:
10.1063/1.2811711
30 Luo X G, Ishihara T. Surface plasmon resonant interference nanolithography technique. Appl Phys Lett84, 4780 (2004).
DOI:
10.1063/1.1760221
31 Sadiq D, Shirdel J, Lee J S, Selishcheva E, Park N et al. Adiabatic nanofocusing scattering-type optical nanoscopy of individual gold nanoparticles. Nano Lett11, 1609-1613 (2011).
DOI:
10.1021/nl1045457
32 Müller M, Kravtsov V, Paarmann A, Raschke M B, Ernstorfer R. Nanofocused Plasmon-driven sub-10 fs electron point source. ACS Photonics3, 611-619 (2016).
DOI:
10.1021/acsphotonics.5b00710
33 Schmidt S, Piglosiewicz B, Sadiq D, Shirdel J, Lee J S et al. Adiabatic nanofocusing on ultrasmooth single-crystalline gold tapers creates a 10-nm-sized light source with few-cycle time resolution. ACS Nano6, 6040-6048 (2012).
DOI:
10.1021/nn301121h
34 Berweger S, Atkin J M, Olmon R L, Raschke M B. Adiabatic Tip-Plasmon focusing for Nano-Raman spectroscopy. J Phys Chem Lett1, 3427-3432 (2010).
DOI:
10.1021/jz101289z
35 Kravtsov V, Atkin J M, Raschke M B. Group delay and dispersion in adiabatic plasmonic nanofocusing. Opt Lett38, 1322-1324 (2013).
DOI:
10.1364/OL.38.001322
36 Esmann M, Becker S F, da Cunha B B, Brauer J H, Vogelgesang R et al. k-space imaging of the eigenmodes of sharp gold tapers for scanning near-field optical microscopy. Beilstein J Nanotechnol4, 603-610 (2013).
DOI:
10.3762/bjnano.4.67
37 Mihaljevic J, Hafner C, Meixner A J. Grating enhanced apertureless near-field optical microscopy. Opt Express23, 18401-18414 (2015).
DOI:
10.1364/OE.23.018401
38 Lee J S, Han S, Shirdel J, Koo S, Sadiq D et al. Superfocusing of electric or magnetic fields using conical metal tips: effect of mode symmetry on the plasmon excitation method. Opt Express19, 12342-12347 (2011).
DOI:
10.1364/OE.19.012342
39 Andrey P. Nanofocusing of surface Plasmons at the apex of metallic probe tips. J Nanoelectron Optoe5, 310-314 (2010).
DOI:
10.1166/jno.2010.1116
40 Johnson P B, Christy R W. Optical constants of the noble metals. Phys Rev B6, 4370-4379 (1972).
DOI:
10.1103/PhysRevB.6.4370
41 Palik E D. Handbook of Optical Constants of Solids (Academic, San Diego, America, 1998).
42 Stockman M I. Nanofocusing of optical energy in tapered plasmonic waveguides. Phys Rev Lett93, 137404 (2004).
DOI:
10.1103/PhysRevLett.93.137404
43 Fang Z Y, Lin C F, Ma R M, Huang S, Zhu X. Planar plasmonic focusing and optical transport using CdS nanoribbon. ACS Nano4, 75-82 (2010).
DOI:
10.1021/nn900729n
44 Fang Z Y, Fan L R, Lin C F, Zhang D, Meixner A J et al. Plasmonic coupling of bow tie antennas with Ag nanowire. Nano Lett11, 1676-1680 (2011).
DOI:
10.1021/nl200179y
45 Gurevich V S, Libenson M N. Surface polaritons propagation along micropipettes. Ultramicroscopy57, 277-281 (1995).
DOI:
10.1016/0304-3991(94)00152-D
46 Babadjanyan A J, Margaryan N L, Nerkararyan K V. Superfocusing of surface polaritons in the conical structure. J Appl Phys87, 3785 (2000).
DOI:
10.1063/1.372414
47 Zhang W D, Huang L G, Wei K Y, Li P, Jiang B Q et al. Cylindrical vector beam generation in fiber with mode selectivity and wavelength tunability over broadband by acoustic flexural wave. Opt Express24, 10376-10384 (2016).
DOI:
10.1364/OE.24.010376
48 Novotny L, Hafner C. Light propagation in a cylindrical waveguide with a complex, metallic, dielectric function. Phys Rev E50, 4094-4106 (1994).
DOI:
10.1103/PhysRevE.50.4094
49 Gramotnev D K, Vogel M W, Stockman M I. Optimized nonadiabatic nanofocusing of plasmons by tapered metal rods. J Appl Phys104, 034311 (2008).
DOI:
10.1063/1.2963699
50 Issa N A, Guckenberger R. Optical nanofocusing on tapered metallic waveguides. Plasmonics2, 31-37 (2007).
DOI:
10.1007/s11468-006-9022-7
