Low Temperature Laboratory

The Low Temperature Laboratory at Aalto University is one of the world centres in ultra low temperature physics and technology. The leading position is based on vigorous in-house development and construction of sub-mK refrigerators.
Image: Unto Rautio

The Low Temperature Laboratory is administered by the Department of Applied Physics. It is part of the national Otaniemi Research Infrastructure for Micro- and Nanotechnologies, OtaNano, and partner in the European Microkelvin Platform. Read more about us and find out how to contact us through the links below.


The Low Temperature Laboratory has advanced sub-Kelvin refrigeration facilities: two sub-mK (unique rotating cryostat and world record stationary cryostat) and more than 10 dilution refrigerators aimed for different type of experiments.

LTL Facilities

Sub-Kelvin refrigerators and semi-cleanroom

LTL refrigerator. Image: Roee Cohen.

LTL access

Access policy and visitors

Students at Cryocourse 2018

LTL Training

Safety course, basic training and instructions

OtaNano - LTL user training

LTL Support Services

Cryogenic liquids and workshop

Cryoliquid center
Image: Mikko Raskinen.


Please find the Aalto Research & Teaching Infrastructure Scheduling Tool here.



Record low temperatures

Low Temperature Laboratory has produced several world records of low temperatures in about thirty years' span and still holds the record for macroscopic condensed matter systems.

Low temperature laboratory. Image: Mikko Raskinen.

LTL Milestones

Historical highlights of LTL




Image: Unto Rautio.

Completed PhD Theses

List of completed PhD Theses

Doctoral hats in Aalto University Conferment

Annual reports

Annual reports of Low Temperature Laboratory

Annual reports

Where to find us

Nanotalo building

Address: Puumiehenkuja 2
Mon-Fri 7.45-16.00

Nanotalo. Puumiehenkuja 2. Kuva / Image: Aalto-yliopisto / Mikko Raskinen / Aalto University
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