title: Strain Discontinuity, Avalanche, and Memory in Carbon Nanotube Serpentine Systems.
abstract: This work addresses the problem of how a nano-object adheres to a supporting media. The case of study are the serpentine-like structures of single-wall carbon nanotubes (SWNTs) grown on vicinal crystalline quartz. We develop in situ nanomanipulation and confocal Raman spectroscopy in such systems, and to explain the results, we propose a dynamical equation in which static friction is treated phenomenologically and implemented as cutoff for velocities, via Heaviside step function and an adhesion force tensor. We demonstrate that the strain profiles observed along the SWNTs are due to anisotropic adhesion, adhesion discontinuities, strain avalanches, and memory effects. The equation is general enough to make predictions for various one- and two-dimensional nanosystems adhered to a supporting media.
authors.affiliation: Departamento de Física, Universidade Federal de Minas Gerais , Belo Horizonte, MG 31270-901, Brazil.|Departamento de Física-Matemática, Instituto de Física, Universidade de São Paulo , São Paulo, SP 05314-970, Brazil.
authors.forename: Lucas C P A M
authors.initials: LC
authors.lastname: Müssnich
authors.affiliation: Departamento de Física, Universidade Federal de Minas Gerais , Belo Horizonte, MG 31270-901, Brazil.
authors.forename: Hélio
authors.initials: H
authors.lastname: Chacham
authors.affiliation: Departamento de Física, Universidade Federal de Minas Gerais , Belo Horizonte, MG 31270-901, Brazil.|Departamento de Física, Universidade Federal de Ouro Preto , Ouro Preto, MG 35400-000, Brazil.
authors.forename: Jaqueline S
authors.initials: JS
authors.lastname: Soares
authors.affiliation: Departamento de Física, Universidade Federal de Minas Gerais , Belo Horizonte, MG 31270-901, Brazil.|Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará , Belém, PA 66075-110, Brazil.
authors.forename: Newton M
authors.initials: NM
authors.lastname: Barbosa Neto
authors.affiliation: Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot, 76100, Israel.
authors.forename: Nitzan
authors.initials: N
authors.lastname: Shadmi
authors.affiliation: Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot, 76100, Israel.
authors.forename: Ernesto
authors.initials: E
authors.lastname: Joselevich
authors.affiliation: Departamento de Física, Universidade Federal de Minas Gerais , Belo Horizonte, MG 31270-901, Brazil.
authors.forename: Luiz Gustavo
authors.initials: LG
authors.lastname: Cançado
authors.affiliation: Departamento de Física, Universidade Federal de Minas Gerais , Belo Horizonte, MG 31270-901, Brazil.
authors.forename: Ado
authors.initials: A
authors.lastname: Jorio
keywords: Carbon nanotubes; Raman spectroscopy; nanomanipulation; nanoscale adhesion; nanotribology; strain