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Anti-Stokes Raman Scattering of Single Carbyne Chains

2021; American Chemical Society; Volume: 15; Issue: 7 Linguagem: Inglês

10.1021/acsnano.1c03893

1936-086X

Cla Duri Tschannen, Martin Frimmer, Georgy Gordeev, Thiago L. Vasconcelos, Lei Shi, Thomas Pichler, Stephanie Reich, Sebastian Heeg, Lukáš Novotný,

Graphene research and applications

We investigate the anti-Stokes Raman scattering of single carbyne chains confined inside double-walled carbon nanotubes. Individual chains are identified using tip-enhanced Raman scattering (TERS) and heated by resonant excitation with varying laser powers. We study the temperature dependence of carbyne's Raman spectrum and quantify the laser-induced heating based on the anti-Stokes/Stokes ratio. Due to its molecular size and its large Raman cross section, carbyne holds great promise for local temperature monitoring, with potential applications ranging from nanoelectronics to biology.