Department News & Events
Defense of Dissertation by M.Sc. (Tech.) Antti Soininen on 24 May
posted in Highlights, News & Events
M.Sc. (Tech.) Antti Soininen will defend the dissertation ” Nano- and mesoscale structure control in block copolymers and dendritic supramolecules” at 12:00 noon on 24 May 2013 in lecture hall E, Otakaari 1. In the thesis, polymers and other organic compounds which spontaneously self-assemble into structures in the length scale of 1-1000 nm are studied. The results of the thesis can be utilized in, for example, the design of new nanomaterials.
Opponent: Professor Ting Xu, University of California, Berkeley, USA
Supervising Professor: Professor Janne Ruokolainen, Aalto University School of Science, Department of Applied Physics
Electronic dissertation: http://lib.tkk.fi/Diss
Defense of Dissertation by M.Sc. Khattiya Chalapat on 24 May
posted in Highlights, News & Events
M.Sc. Khattiya Chalapat will defend the dissertation ” Nanostructured Materials under Ion and Microwave Radiation” at 12:00 noon on 24 May 2013 in lecture hall U149, Otakaari 1, Espoo. The thesis presents 1) the study of the self-organization and the deformation of metallic nanostructures and their applications in nanofabrication technology, and 2) the study of magnetic nanoparticles and carbon nanotubes and their applications in the field of microwave and radio engineering.
Opponent: Professor : Professor Eyal Buks, Technion, Israel Institute of Technology, Israel
Supervising Professor: Professor Jukka Pekola, Aalto University School of Science, O.V. Lounasmaa Laboratory
Electronic dissertation: http://lib.tkk.fi/Diss
Defense of Dissertation by M.Sc. (Tech.) Santtu Ollila on 24 May
posted in Highlights, News & Events
M.Sc. (Tech.) Santtu Ollila will defend the dissertation ” A Quantitative Multiscale Approach to Nanofluidics” at 12:00 noon on 24 May 2013 in lecture hall K, Otakaari 1, Espoo. In the thesis, a quantitatively accurate multiscale method for studying fluid flow in the nanoscale is developed, validated extensively and applied to current problems in micro and nanofluidics.
Opponent: Professor José María Ortiz de Zárate, Universidad Complutense de Madrid, Spain
Supervising Professor: Professor Tapio Ala-Nissilä, Aalto University School of Science, Department of Applied Physics
Electronic dissertation: http://lib.tkk.fi/Diss
A Talk by Dr. Gentaro Watanabe on 15 May
posted in News & Events
Speaker: Dr. Gentaro Watanabe, Asia Pacific Center for Theoretical Physics, Pohang, South Korea.
Time: Wednesday May 15th at 11.15.
Venue: Micronova, large seminar room (2190).
Title: Non-linear phenomena of superfluid Fermi gases in optical lattices.
Abstract:
Interplay between the non-linearity in superfluids and the periodic potential is one of the most important issues of the ultracold atom gases in optical lattices. For Bose-Einstein condensates (BECs) in optical lattices, it has been pointed out that the non-linearity which originates from the interatomic interaction can give rise to a loop-like energy band structure called “swallowtail” and the emergence of period-doubled states, etc.
The problem of the interplay between the non-linearity and the periodic potential for Fermi superfluids can be even more important due to possible implications for other systems. Also, the fundamental question whether or not these phenomena exist along the crossover from the Bardeen-Cooper-Schrieffer (BCS) to BEC states is still open. To solve this problem, we study superfluid Fermi gases flowing in a one-dimensional optical lattice by numerically solving the Bogoliubov-de Gennes equations.
In this seminar, first we will discuss swallowtails in superfluid Fermi gases along the BCS-BEC crossover [1]. Here we shall show that, in each side of the crossover region, the swallowtail appears in the Bloch energy band of the superfluid above a critical value of the interaction strength. Interestingly, along with the appearance of the swallowtail, there exists a narrow band in the quasiparticle energy spectrum close to the chemical potential and the incompressibility of the Fermi gas consequently experiences a profound dip in the BCS side, unlike in the BEC side. If time allows, we shall also discuss period doubling in superfluid Fermi gases [2].
[1] G. Watanabe, S. Yoon, and F. Dalfovo, Phys. Rev. Lett. 107, 270404 (2011).
[2] G. Watanabe, S. Yoon, F. Dalfovo, and T. Nakatsukasa, in preparation.
Aalto SCI Dean’s Coffee on 16 May
posted in News & Events
You are warmly welcome to the Aalto University School of Science (Aalto SCI) Dean’s coffee event:
Time: Thursday 16.5. at 14.30-16.00 (coffee is served from 14.20)
Place: lecture hall T1, T-building (ground floor), Konemiehentie 2
- Opening words, Vice Dean Eero Eloranta
- Aalto SCI plans for the future, Vice Dean Eero Eloranta
- Aalto SCI for advancing entrepreneurship, Executive in Residence Olli Vuola
Defense of Dissertation by M.Sc. (Tech.) Jussi Leinonen on 17 May
posted in Highlights, News & Events
M.Sc. (Tech.) Jussi Leinonen will defend the dissertation ”Impact of the microstructure of precipitation and hydrometeors on multi-frequency radar observations” at 12:00 o’clock on 17 May 2013 in Auditorium L, Otakaari 1, Espoo. In the thesis, the interpretation and computational modeling of radar measurements of high-latitude precipitation, particularly snowfall, was studied from the perspective of multi-frequency radars.
Opponent: Assistant Professor Tristan L’Ecuyer, University of Wisconsin-Madison, USA
Supervising Professor: Aalto Professor Risto Nieminen, Aalto University School of Science, Department of Applied Physics
Defense of Dissertation by M.Sc. (Tech.) Jaana Vapaavuori on 17 May
posted in Highlights, News & Events
M.Sc. (Tech.) Jaana Vapaavuori will defend the dissertation “Design of efficient photoresponsive materials through supramolecular functionalization” at 12:30 o’clock on 17 May 2013 in lecture hall TU1, Otaniementie 17, Espoo. The dissertation presents simple rules by which the response of the photoresponsive azobenzene-based polymers can be controlled. These materials may find future use for example in light-controllable robotics and in machines that convert the energy of light directly to the mechanical energy.
Opponent: Professor Géraldine Bazuin, Université de Montréal, Canada
Supervising Professor: Professor Matti Kaivola, Aalto University School of Science, Department of Applied Physics
Electronic dissertation: http://lib.tkk.fi/Diss
Scientific Computing in Practice: kickstart 2013
posted in COMP, COMP Events, Highlights, News & Events
Kickstart for participants to get started with the available computational resources at Aalto. Give hints, ready solutions and copy/paste ready examples on how to compile and run available software and how to develop your own code. Leaving the course you expect to know where you suppose to run your job, how to use available software or install your own, and how to make it in the most efficient way on Aalto resources.
Working Toward a More Inexpensive and Widespread Use of Solar Energy
posted in News & Events
“The use of solar energy is increasing rapidly, and by 2050, the share of solar electricity may even represent one fourth of all the electricity used worldwide,” predicts Professor Peter Lund of Aalto University School of Science Department of Applied Physics. Solar energy is gaining in popularity primarily due to the improved efficiency and reduced cost of solar cells. Within the Academy of Finland’s Sustainable Energy Research Programme, Lund’s research team is working on developing third generation solar cells. The aim is to produce large-scale solutions for the utilisation of renewable energy. Read more at: http://www.aka.fi/en-GB/A/Academy-of-Finland/Media-services/Releases1/Working-toward-a-more-inexpensive-and-widespread-use-of-solar-energy-/
Scientists Reach the Ultimate Goal – Controlling Chirality in Carbon Nanotubes
posted in News & Events
An ultimate goal in the field of carbon nanotube research is to synthesise single-walled carbon nanotubes (SWNTs) with controlled chiralities. Twenty years after the discovery of SWNTs, scientists from Aalto University in Finland, A.M. Prokhorov General Physics Institute RAS in Russia and the Center for Electron Nanoscopy of Technical University of Denmark (DTU) have managed to control chirality in carbon nanotubes during their chemical vapor deposition synthesis. Carbon nanotube structure is defined by a pair of integers known as chiral indices (n,m), in other words, chirality.
- Chirality defines the optical and electronic properties of carbon nanotubes, so controlling it is a key to exploiting their practical applications, says Professor Esko I. Kauppinen, the leader of the Nanomaterials Group in Aalto University School of Science Department of Applied Physics. Read more at: http://www.aalto.fi/en/current/news/view/2013-04-29/
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