2019
European Microkelvin Platform receives significant European funding from the EC H2020 program to build a European laboratory without walls, to improve and upgrade the infrastructure, and to organize user meetings, trainings, harmonization and standardization of access services.
2015
Low Temperature Laboratory of OVLL is introduced as a part of a new Department of Applied Physics and the Brain Research Unit of OVLL forms a new Department of Neuroscience and Biomedical Engineering with former Department of Biomedical Engineering and Computational Science.
2014
European Microkelvin Platform (EMP) is established, building on the MICROKELVIN collaboration. EMP is an advanced research infrastructure community of 17 partners, with extensive portfolio of capacities and expertise in ultralow temperature physics. EMP provides access to milli- and microkelvin temperature capabilities and services around the Europe.
The Cryohall infrastructure is renamed as Low Temperature Laboratory.
2013
Both of the infrastructures of the laboratory, Cryohall and Aalto NeuroImaging, were selected for the national research infrastructure strategy and roadmap 2014-2020.
National OtaNano research infrastructure is formed in collaboration with Low Temperature Laboratory, Micronova Nanofabrication centre and Nanomicroscopy center.
Aalto NeuroImaging infrastructure was established.
2012
Low Temperature Lab was renamed as Olli V. Lounasmaa Laboratory (OVLL).
2010
Riitta Hari appointed Academician of Science by the Academy of Finland.
Professor Pertti Hakonen becomes the new director of the LTL.
2009
National research infrastructure roadmap was presented for the first time. The Cryohall of the Low Temperature laboratory was selected on to the roadmap, and the neuroimaging infrastructure of the Brain Research Unit was recognized as important national infrastructure.
2008
12 leading European low temperature laboratories formed a European Microkelvin Collaboration – MICROKELVIN, and received FP7-funding from the Capacities Specific Programme called Infrastructures. MICROKELVIN is coordinated by LTL.
Olli V. Lounasmaa's memoirs, titled “Täällä ei näperrellä! – Kylmäfyysikon kuumat paikat”, were published in January 2008 and included a detailed history of LTL.
2007
The graduation of the laboratory’s 100th PhD student.
LTL moved to new premises (Puumiehenkuja 2B) at the end of 2007.
2006
LTL became the home of two national Centers of Excellence (CoE), one in LowTemperature Quantum Phenomena and Devices and another one in Systems Neuroscience and Neuroimaging.
2003
LTL established a memorial prize carrying the name of Academician Olli V. Lounasmaa. The first prize was awarded in 2004 to Professor John Clarke from University of California, Berkeley.
1997
Olli Lounasmaa appointed Academician of Science.
1996
Academy Professor Olli Lounasmaa retires, Professor Mikko Paalanen becomes the new director of the LTL. Nanophysics introduced as a new research direction. LTL selected by IUPAP to host LT22 in 1999.
1994
LTL is granted Center of Excellence status by the Academy of Finland. LTL is granted by the EU’s HCM program a European Large Scale Facility status in both ultra-low-temperature physics (ULTI) and Biomagnetism (BIRCH) for 1994-97.
1980
Neuromagnetic brain research started.
1975
LTL organizes LT15, the main international conference in low-temperature physics.
1973
LTL becomes an independent unit of TKK.
1965
LTL founded as a low-temperature physics laboratory by Professor Olli V. Lounasmaa.
Superfluid 3He
2010
Non-ground-state Bose-Einstein condensates of magnons in superfluid 3He-B are generated.
2006
Propagating vortex front is observed.
2003
An intrinsic velocity-independent criterion for superfluid turbulence is discovered.
2002
Kelvin-Helmholtz instability of the interface between two superfluids is discovered.
2000
Circulation of doubly quantized vortex measured.
1996
Simulation of early universe with the rapid superfluid phase transition in 3He.
1993
Landau's prediction of vortex sheet confirmed experimentally.
1992
Composite topological object - spin-mass vortex which terminates the soliton - is observed.
1982
Vortex core transition found in superfluid 3He-B.
1981
Vortices observed in superfluid 3He.
1972
Viscosity measurements confirm superfluidity in 3He.
Nuclear magnetism and superconductivity
2006
Superconductivity in Li
2004
Nuclear ferromagnetism in Li
2000
Influence of nuclear magnetism on superconductivity in Rh
1999
World record temperature of 100 pK in a Rh sample
1994
Neutron diffraction shows long-range nuclear magnetic order in Ag
1993
World record temperature of 280 pK in a Rh sample
1990
Complex phase diagram mapped by neutron diffraction in Cu
1989
Antiferromagnetic ordering in Ag at 560 pK
1987
First Bragg reflection from antiferromagnetically ordered Cu
1983
Antiferromagnetic ordering observed in Cu at 58 nK
Interfaces in quantum systems
2008
Devil's staircase of facets observed on 4He crystals.
2006
Thermodynamics of 4He solid was studied, no non-phonon contribution found.
2004
Quantum roughening of 3He crystals is observed and studied.
2002
10 new facets discovered on 3He crystal surface.
2000
3He crystals are imaged at temperatures below 1 mK.
1997
Facet growth by step motion detected and studied in detail.
1995
Facets on 4He crystals found to be curved.
1994
Optical detection of vortex-free meniscus in rotating superfluid 3He
1991
Optical measurements in a rotating cryostat below 1 mK
2013
Nanomechanical microwave amplifier
2010
SQUIPT magnetic field sensor
2008
SINIS turnstile
2005
C-SET
2004
L-SET
2003
Sluice Cooper pair pump
2002
BOT current amplifier (Science 2003)
1999
Carbon nanotube based SET
1998
8 nm particles and nanotubes moved with the tip of an AFM. Superconductor-insulator transition characterized in a single isolated Josephson junction.
1997
15 nm linewidth demonstrated in electron beam writing.
1996
Single electron transistors demonstrated successfully.
1996
SINIS refrigerator
1994
Nanothermometer
2015
Pulsetube based liquefaction started
2012
Five dry dilution refrigerators are running in the laboratory and dry demagnetization refrigerator is under development (in cooperation with BlueFors Cryogenics)
2011
Robust plastic dilution refrigerator was developed
2007
BlueFors Cryogenics (LTL spin-off company) was established
2006
First dry dilution refrigerator assembled in the laboratory
1993
World's largest dilution refrigerator for cooling polarized targets completed at CERN
1988
1.6 T magnet built for phosphorus NMR imaging
1983
MRI system with a superconducting magnet built for clinical evaluation
1980
Millikelvin temperatures in a rotating cryostat
1979
100 kW superconducting motor built and successfully tested
1978
Double nuclear cooling in operation
1971
Cryostat combining nuclear cooling with dilution refrigeration operational
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