DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Interface Adhesion and Structural Characterization of Rolled-up GaAs/In0.2Ga0.8As Multilayer Tubes by Coherent Phonon Spectroscopy

Brick, Delia and Engemaier, V. and Guo, Yuning and Grossmann, Martin and Li, G. and Grimm, D. and Schmidt, O. G. and Schubert, M. and Gusev, Vitalyi and Hettich, Mike and Dekorsy, Thomas (2017) Interface Adhesion and Structural Characterization of Rolled-up GaAs/In0.2Ga0.8As Multilayer Tubes by Coherent Phonon Spectroscopy. Scientific Reports, 7 (1), s41598-017. Nature Publishing Group. doi: 10.1038/s41598-017-05739-6. ISSN 2045-2322.

[img] PDF

Official URL: http://dx.doi.org/10.1038/s41598-017-05739-6


We present a detailed experimental and theoretical study of the acoustic phonon modes in rolled-up multilayers with thickness of the layers in the nanometre and diameters in the micrometre range. We compare our results to planar, unrolled multilayers grown by molecular beam epitaxy. For the planar multilayers the experimentally obtained acoustic modes exhibit properties of a superlattice and match well to calculations obtained by the Rytov model. The rolled-up superlattice tubes show intriguing differences compared to the planar structures which can be attributed to the imperfect adhesion between individual tube windings. A transfer matrix method including a massless spring accounting for the imperfect adhesion between the layers yields good agreement between experiment and calculations for up to five windings. Areas with sufficient mechanical coupling between all windings can be distinguished by their acoustic mode spectrum from areas where individual windings are only partially in contact. This allows the spatially resolved characterization of individual tubes with micrometre spatial resolution where areas with varying interface adhesion can be identified.

Item URL in elib:https://elib.dlr.de/113263/
Document Type:Article
Title:Interface Adhesion and Structural Characterization of Rolled-up GaAs/In0.2Ga0.8As Multilayer Tubes by Coherent Phonon Spectroscopy
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Brick, Deliakonstanz universityUNSPECIFIED
Engemaier, V.IFW Dresden, GermanyUNSPECIFIED
Guo, Yuningkonstanz universityUNSPECIFIED
Grossmann, MartinKonstanz UniversityUNSPECIFIED
Li, G.IFW Dresden, GermanyUNSPECIFIED
Grimm, D.IFW Dresden, GermanyUNSPECIFIED
Schmidt, O. G.IFW Dresden, GermanyUNSPECIFIED
Schubert, M.Konstanz UniversityUNSPECIFIED
Gusev, Vitalyilunam universités, cnrs, université du maine, laum umr-cnrs 6613, av.o. messiaen, 72085 le mans, franceUNSPECIFIED
Hettich, Mikekonstanz universityUNSPECIFIED
Dekorsy, Thomasinstitute of technical physics, dlrhttps://orcid.org/0000-0003-2257-2854
Date:14 July 2017
Journal or Publication Title:Scientific Reports
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.1038/s41598-017-05739-6
Page Range:s41598-017
Publisher:Nature Publishing Group
Keywords:laser spectroscopy, adhesion, coherent phonons, nanostructures, picosecond acoustics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology (old)
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Dekorsy, Prof. Dr. Thomas
Deposited On:17 Jul 2017 10:49
Last Modified:08 Mar 2018 18:36

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.