Nanoscience Center

Nanoscience seminars

Seminars are arranged during the terms on weekly bases on Friday afternoons at 1 o'clock with coffee, talk starts 13:15 in YN121 in NSC. Welcome!

Friday 24.4 Nanomaster seminars

 

Sami Kinnunen

Fabrication of conducting ceramic thin films by atomic layer deposition

MAX phases are a class of ternary carbides and nitrides which possess rare combination of properties characteristic to both metals and ceramics. Many are electrically and thermally conducting but also elastically stiff and resistant to oxidation and high temperatures. Atomic layer deposition (ALD) is a method used to produce thin conformal films from gaseous precursors. MAX phases have not been fabricated by ALD before. Two different phases, Ti2AlN/Ti4AlN3 and Ti2AlC/Ti3AlC2, were selected as candidates, since ALD processes for TiN, AlN and TiC already exist. Films were deposited in different temperatures and ratio of precursor pulses were varied. Annealing at 600-1000 oC in N2 -atmosphere and vacuum was made in order to increase crystallinity of films. Deposited films were characterized by Atomic Force Microscope (AFM), Scanning Electron Microscope (SEM), Raman spectroscopy, X-ray Diffraction (XRD) and Time-of-Flight Elastic Recoil Detection Analysis (ToF-ERDA). Elemental composition showed that Ti:Al ratio is easy to control while means to control N content is challenging. AFM and SEM pictures showed polycrystallinity especially in annealed samples. However, XRD did not show hints of MAX phases. It is possible that higher deposition temperature and better control of elemental composition might yield more positive result. Advisors: Timo Sajavaara and Jari Malm
References:
1. P. Eklund, M. Beckers, U. Jansson, H. Högberg, and L. Hultman. The Mn+1AXn phases: Materials science and thin-film processing. Thin Solid Films, 518(8):1851-1878, (2010).
2. Steven M. George. Atomic Layer Deposition: An Overview. Chemical Reviews, 110(1):111-131, (2010)

 

 

DateTitle

Speaker

Host
27.2

Pyrophosphate Content Measurement in Cells by Simple Terpyridine-Zn+2 Dye

Removing alkylthiols from gold surface:
Molecular dynamics simulations in density function theory

Quantitative spectroscopic analysis of covalent functionalization
of gold clusters

Master students:
Gunjan Pandey

Sami Kaappa

Johanna Salmela
Johansson
5.3
Th

Tiny Metal Objects beyond Nano: Not Just with the Sizes

Katsuaki Konishi

Hokkaido University
Japan

Häkkinen
12.3
Th
Host-Guest Dialogue at Interfaces,
Spoken in the Language of Cavitands

Enrico Dalcanale Università di Parma
Italy

Nissinen
13.3
Fr at 10-12
A mini workshop on Coarse Graining Alex de Vries
University of Groningen Netherlands

Groenhof
27.3 Deciphering protein-protein, protein-ligand and protein-metal ion interactions with native mass spectrometry Janne Jänis
University of Eastern Finland
Kalenius
10.4 Manufacturing and characterisation of carbon nanotube reinforced free-standing Al2O3 films
Fabrication of conducting ceramic thin films by atomic layer deposition

Master students:
Kasper Leppänen

Sami Kinnunen

Johansson
24.4. Master students Johansson
8.5 Master students Johansson
29.5. Master students Johansson
5.6. Eero Hulkko
NSC
Pettersson
12.6 Solid lipid nanoparticles from aryl-extended calixpyrroles Kaisa Helttunen
NSC
Nissinen
18.9 Master students Johansson


The previous seminars in  2014 2013 2012 2011 2010 2009 2008 2007

 

Seminars in:

Department of Physics Molecular Recognition

Contact Information

/

Nanoscience Center
P.O.Box 35
FI-40014 University of Jyväskylä
FINLAND
Tel: +358 50 3956 020
Fax: +358 14 617 412

Street address and office:
YN213
Survontie 9 C
40500 Jyväskylä

E-mail: nanoscience@jyu.fi

 

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