Atomic structure of nanosystems from transmission electron microscopy experiments and first-principles simulations

COST action MP0901 NanoTP Workshop

May 31 - June 02, 2011, Helsinki-Stockholm-Helsinki

The workshop will be organized onboard a ferry similar to the one shown in the above image. © 2008 Andy Siitonen (from flickr)

Made possible by

This is a COST action MP0901 NanoTP workshop with financial support from the National Graduate School in Materials Physics and Academy of Finland.

Important dates

• April 15th, 2011 - Deadline for abstract submission & registration
• May 13th, 2011 - Deadline for payment (details will be given later)

Topics

• Progress in aberration-corrected high resolution transmission electron microscopy (AC-HRTEM) studies of carbon and other nanostructures
• TEM image simulations based on DFT data
• Simulations of EELS and ELNES spectra
• Production of defects under electron beam and minimization of the damage
• Electron-beam-mediated engineering of nanostructures

Introduction

Recent progress in the transmission electron microscopy (TEM) and scanning TEM made it possible to not only unravel the atomic structure of various systems with a resolution of better than 0.1 nm, but also carry out elemental analysis and determine the types of particular atoms in the sample. Moreover, based on spectroscopic in-situ techniques (for example, electron energy loss spectroscopy, EELS), the charge state and the bonding configuration of individual atoms and point defects in the material can be identified.

The unequivocal interpretation of the experimental data can considerably benefit from the juxtaposition of the data to the results of first-principles calculations. The accuracy of the measurement is now so high that in addition to the information on the atomic configuration (that is atom positions), the detailed information on the spatial distribution of the electron density and on the electron structure of the system is required.

First principles simulations, and specifically density-functional theory (DFT) approaches, have provided lots of insight into the electronic structure and properties of various solids. Besides, using DFT and time-dependent DFT molecular dynamics, one can simulate production of defects under electron irradiation and their time evolution.

In this workshop we are going to bring together the TEM experts and computational materials scientists to discuss the progress in TEM analysis and visualization of the atomic structure of nanosystems and how DFT simulations can help in the interpretation of the images. The workshop will be focused on carbon systems, but also other materials are going to be discussed.

Venue

  
(Left) The route of the ferry on Baltic Sea from Helsinki to Stockholm with a stop at Åland islands. (Right) Suomenlinna fortress as seen from onboard a passing ferry. © 2005 Michal Pise (from Wikimedia Commons)

The workshop will take place on a board of a ferry going from Helsinki to Stockholm via Åland and back.

The workshop will start at about 1 pm on Tuesday May 31 (the ferry departures from downtown Helsinki at 5 pm, so that you may come a bit later if there is no option to arrive in Helsinki in time), and work till 8-9 pm (with ca 1 hour break to see the departure, Helsinki archipelago and the Suomenlinna fortress).

Next morning (the ferry arrives in Stockholm at 9:30 am) will be used for discussions, which can take place in Stockholm.

The presentations will continue again at about 2 pm, and they will last until 8-9 pm.

After the return to Helsinki, additional discussions can be arranged in the University of Helsinki, including a tour to see the experimental facilities at the University of Helsinki or the Aalto University.

View from the ferry (left) and an overview of the interior (right).

Travel Instructions

Bus from the airport

There is a direct bus from the airport to downtown Helsinki (bus number 615/615T). The trip will take about 30 minutes (615) to 45 minutes (615T) and will cost 4 euro (can be bought from the driver). You can also take Finnair Express bus to downtown which is quicker, but will cost 6 euro. From downtown, you need to come to the ship terminal (Olympiaterminaali), which can be reached with tram 3T (included in the bus ticket if tram is entered within 90 minutes from buying the ticket). The tram trip will take about 10 minutes. Walking the same distance will take about 15 minutes.

The easiest way to plan the trip from and to the airport is to use the journey planner (available in English). The address is http://www.reittiopas.fi/en/.

Journey planner will also provide you with maps of the journey. For the places, type in: "Helsinki-Vantaa Airport, Vantaa" and "Olympiaterminaali, Helsinki".

Taxi

Another option is to take taxi from the airport. The price will be about 40-50 euro, and the trip will take ~40 minutes depending on the traffic.

Registration & Abstract submission

Registration for the workshop is possible via an online form. Registration deadline is April 15th, 2011. Please note that we must limit the number of participants to about 40. The approved oral or poster presentations will be selected based on the scientific quality of the work and its relevance to the subject of the workshop.

REGISTRATION IS CLOSED. CONTACT ARKADY KRASHENINNIKOV OR JANI KOTAKOSKI IF YOU WISH TO PARTICIPATE IN THE WORKSHOP.

Preliminary Program

NOTE: Meeting at the Olympia terminal on Tuesday May 31st at 11:00!

You can download the pdf version of the abstract book here.

Tuesday 31.05.2011

Wednesday 01.06.2011

Thursday 02.06.2011

Costs

There is no workshop fee. The participants will need to pay only a part of their accommodation costs, as specified below (except for the invited speakers).

• 200 EURO for a single (own) cabin
• 150 EURO for a double (shared) cabin

This covers accommodation in a sea-view cabin, two buffet-style dinners and two breakfasts.

The details of payment will be given later.

Invited Speakers

Florian Banhart (U. Strasbourg, France)
Peter Bøggild (TU Denmark)
Dmitri Golberg (NIMS, Japan)
Hua Jiang (Aalto University, Finland)
Ute Kaiser (U. Ulm, Germany)
Jani Kotakoski (U. Helsinki, Finland)
Steven Louie (U. California, Berkeley, USA)
Jannik Meyer (U. Vienna, Austria)
Kazu Suenaga (AIST, Japan)
Eli Sutter (Brookhaven National Laboratory, USA)
David Tomanek (Michigan State University, USA)
Jamie Warner (U. Oxford, Great Britain)

More invited speakers may be selected based on contributed abstracts.

Organizers

Arkady Krasheninnikov (University of Helsinki and Aalto University, Finland)
Risto Nieminen (Aalto University, Finland)
Jani Kotakoski (University of Helsinki, Finland)