TUHH Open Research
Hilfe
  • Log In
    or
    New user? Click here to register.Have you forgotten your password?
  • English
  • Deutsch
  • Communities & Collections
  • Publications
  • Research Data
  • People
  • Institutions
  • Projects
  • Statistics
  1. Home
  2. TUHH
  3. Publications with fulltext
  4. Elasticity of cross-linked titania nanocrystal assemblies probed by AFM-bulge tests
 
  • Publication Details
  • Files
Options

Elasticity of cross-linked titania nanocrystal assemblies probed by AFM-bulge tests

Citation Link: https://doi.org/10.15480/882.2400
Publikationstyp
Journal Article
Publikationsdatum
2019-08-29
Sprache
English
Author
Hensel, Andreas 
Schröter, Clemens Jasper 
Schlicke, Hendrik 
Schulz, Norbert 
Riekeberg, Svenja 
Trieu, Hoc Khiem 
Stierle, Andreas 
Noei, Heshmat 
Weller, Horst 
Vossmeyer, Tobias 
Institut
Mikrosystemtechnik E-7 
DOI
10.15480/882.2400
TORE-URI
http://hdl.handle.net/11420/3340
Lizenz
https://creativecommons.org/licenses/by/4.0/
Enthalten in
Nanomaterials 
Volume
9
Issue
9
Article Number
1230
Citation
Nanomaterials 9 (9): 1230 (2019)
Publisher DOI
10.3390/nano9091230
Scopus ID
2-s2.0-85073479117
Publisher
Multidisciplinary Digital Publishing Institute
In order to enable advanced technological applications of nanocrystal composites, e.g., as functional coatings and layers in flexible optics and electronics, it is necessary to understand and control their mechanical properties. The objective of this study was to show how the elasticity of such composites depends on the nanocrystals’ dimensionality. To this end, thin films of titania nanodots (TNDs; diameter: ~3–7 nm), nanorods (TNRs; diameter: ~3.4 nm; length: ~29 nm), and nanoplates (TNPs; thickness: ~6 nm; edge length: ~34 nm) were assembled via layer-by-layer spin-coating. 1,12-dodecanedioic acid (12DAC) was added to cross-link the nanocrystals and to enable regular film deposition. The optical attenuation coefficients of the films were determined by ultraviolet/visible (UV/vis) absorbance measurements, revealing much lower values than those known for titania films prepared via chemical vapor deposition (CVD). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images showed a homogeneous coverage of the substrates on the µm-scale but a highly disordered arrangement of nanocrystals on the nm-scale. X-ray photoelectron spectroscopy (XPS) analyses confirmed the presence of the 12DAC cross-linker after film fabrication. After transferring the films onto silicon substrates featuring circular apertures (diameter: 32–111 µm), freestanding membranes (thickness: 20–42 nm) were obtained and subjected to atomic force microscopy bulge tests (AFM-bulge tests). These measurements revealed increasing elastic moduli with increasing dimensionality of the nanocrystals, i.e., 2.57 ± 0.18 GPa for the TND films, 5.22 ± 0.39 GPa for the TNR films, and 7.21 ± 1.04 GPa for the TNP films.
Schlagworte
composite film
bulge test
AFM
titania
nanoparticle
layer-by-layer
attenuation coefficient
elastic modulus
Young’s modulus
XPS
DDC Class
530: Physik
540: Chemie
600: Technik
620: Ingenieurwissenschaften
Projekt(e)
SFB 986: Teilprojekt Z2 
More Funding Information
Deutsche Forschungsgemeinschaft (DFG)
TUHH
Weiterführende Links
  • Contact
  • Send Feedback
  • Cookie settings
  • Privacy policy
  • Impress
DSpace Software

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science
Design by effective webwork GmbH

  • Deutsche NationalbibliothekDeutsche Nationalbibliothek
  • ORCiD Member OrganizationORCiD Member Organization
  • DataCiteDataCite
  • Re3DataRe3Data
  • OpenDOAROpenDOAR
  • OpenAireOpenAire
  • BASE Bielefeld Academic Search EngineBASE Bielefeld Academic Search Engine
Feedback