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Towards monodisperse Silicon Nanocrystals: density gradient centrifugation applied on commercial gold nanoparticles
KTH, School of Information and Communication Technology (ICT). (ICT-MNF)
2016 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The application of silicon nanocrystals as non-toxic bio-labels and downconverters requires their uniform size distribution in order to minimize the inhomogeneous broadening of the photoluminescence peak. In this thesis, we set the basis for their size-separation via the density-gradient centrifugation method. To be more precise, we successfully apply this technique to separate 5 and 10 nm gold nanoparticles from an ensemble by using an engineered medium layer stack. In addition, we explain how atomic force microscopy is used to measure the size of the nanoparticles, with a particular attentionon the removal of unwanted solvent-related effects. As a future plan, we will implement the technique for the size-separation of silicon nanocrystals.

Place, publisher, year, edition, pages
2016. , 47 p.
Series
TRITA-ICT-EX, 2016:19
Keyword [en]
Silicon Nanocrystals, density gradient centrifugation, gold nanoparticles
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:kth:diva-186172OAI: oai:DiVA.org:kth-186172DiVA: diva2:925922
Subject / course
Microelectronics and Applied Physics
Educational program
Master of Science - Nanotechnology
Presentation
2016-04-15, KTH Kista, Isafjordsgatan 22, Kista, 10:00 (English)
Supervisors
Examiners
Available from: 2016-05-03 Created: 2016-05-03 Last updated: 2017-04-21Bibliographically approved

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Type fulltextMimetype application/pdf

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf