Juho Luomahaara &ndash; Research Output

2019

Multiplexed readout of kinetic inductance bolometer arrays

Sipola, H., Luomahaara, J., Timofeev, A., Grönberg, L., Rautiainen, A., Luukanen, A. & Hassel, J., 2019, In : Review of Scientific Instruments. 90, 7, 074702.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

Bolometers

bolometers

inductance

Inductance

readout

2018

Unshielded SQUID Sensors for Ultra-Low-Field Magnetic Resonance Imaging

Luomahaara, J., Kiviranta, M., Grönberg, L., Zevenhoven, K. & Laine, P., 8 Jan 2018, In : IEEE Transactions on Applied Superconductivity. 28, 4, 1600204.

Research output: Contribution to journal › Article › Scientific › peer-review

SQUIDs

magnetic resonance

sensors

Sensors

Magnetic resonance

2017

12 Citations (Scopus)

Optical and electrical characterization of a large kinetic inductance bolometer focal plane array

Timofeev, A., Luomahaara, J., Grönberg, L., Mäyrä, A., Sipola, H., Aikio, M., Metso, M., Vesterinen, V., Tappura, K., Ala-Laurinaho, J., Luukanen, A. & Hassel, J., 1 Mar 2017, In : IEEE Transactions on Terahertz Science and Technology. 7, 2, p. 218 - 224 7 p., 7811297.

Research output: Contribution to journal › Article › Scientific › peer-review

Bolometers

Focal plane arrays

bolometers

focal plane devices

inductance

2 Citations (Scopus)

Side-wall spacer passivated sub-μm Josephson junction fabrication process

Grönberg, L., Kiviranta, M., Vesterinen, V., Lehtinen, J., Simbierowicz, S., Luomahaara, J., Prunnila, M. & Hassel, J., 16 Nov 2017, In : Superconductor Science and Technology. 30, 12, 6 p., 125016.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

Josephson junctions

spacers

Lithography

Niobium

Parametric amplifiers

2016

6 Citations (Scopus)

Influence of Substrate on Plasmon-Induced Absorption Enhancements

Tappura, K., Luomahaara, J., Haatainen, T., Hassel, J. & Vehmas, T., 2016, In : Plasmonics. 11, 2, p. 627-635

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

Silicon

Thin films

Silicon solar cells

Substrates

Amorphous silicon

2014

17 Citations (Scopus)

Kinetic inductance magnetometer

Luomahaara, J., Vesterinen, V., Grönberg, L. & Hassel, J., 2014, In : Nature Communications. 5, 4872.

Research output: Contribution to journal › Article › Scientific › peer-review

Magnetometers

Magnetic Fields

inductance

Inductance

magnetometers

2013

2 Citations (Scopus)

Characterization of SQUID-based null detector for a quantum metrology triangle experiment

Luomahaara, J., Kemppinen, A., Helistö, P. & Hassel, J., 2013, In : IEEE Transactions on Applied Superconductivity. 23, 3, 5 p., 1601705.

Research output: Contribution to journal › Article › Scientific › peer-review

SQUIDs

triangles

metrology

Detectors

detectors

76 Citations (Scopus)

Hybrid ultra-low-field MRI and magnetoencephalography system based on a commercial whole-head neuromagnetometer

Vesanen, P. T., Nieminen, J. O., Zevenhoven, K. C. J., Dabek, J., Parkkonen, L. T., Zhdanov, A. V., Luomahaara, J., Hassel, J., Penttilä, J., Simola, J., Ahonen, A. I., Mäkelä, J. P. & Ilmoniemi, R. J., 2013, In : Magnetic Resonance in Medicine. 69, 6, p. 1795-1804 10 p.

Research output: Contribution to journal › Article › Scientific › peer-review

Open Access

Magnetoencephalography

Head

Equipment and Supplies

Magnetic Fields

2012

7 Citations (Scopus)

A large winding-ratio planar transformer with an optimized geometry for SQUID ammeter

Luomahaara, J., Kiviranta, M. & Hassel, J., 2012, In : Superconductor Science and Technology. 25, 3, 4 p., 035006.

Research output: Contribution to journal › Article › Scientific › peer-review

ammeters

Ammeters

SQUIDs

transformers

interference

2011

20 Citations (Scopus)

All-planar SQUIDs and pickup coils for combined MEG and MRI

Luomahaara, J., Vesanen, P. T., Penttilä, J., Nieminen, J. O., Dabek, J., Simola, J., Kiviranta, M., Grönberg, L., Zevenhoven, C. J., Ilmoniemi, R. J. & Hassel, J., 2011, In : Superconductor Science and Technology. 24, 7, 7 p., 075020.

Research output: Contribution to journal › Article › Scientific › peer-review

Magnetoencephalography

Pickups

SQUIDs

Magnetic resonance

magnetic resonance

30 Citations (Scopus)

Avoiding eddy-current problems in ultra-low-field MRI with self-shielded polarizing coils

Nieminen, J. O., Vesanen, P. T., Zevenhoven, K. C. J., Dabek, J., Hassel, J., Luomahaara, J., Penttilä, J. S. & Ilmoniemi, R. J., 2011, In : Journal of Magnetic Resonance. 212, 1, p. 154-160 7 p.

Research output: Contribution to journal › Article › Scientific › peer-review

eddy currents

coils

rooms

magnetic resonance

acquisition

2010

55 Citations (Scopus)

Electrical transport and field-effect transistors using inkjet-printed SWCNT films having different functional side groups

Gracia-Espino, E., Sala, G., Pino, F., Halonen, N., Luomahaara, J., Mäklin, J., Tóth, G., Kordás, K., Jantunen, H., Terrones, M., Helistö, P., Seppä, H., Ajayan, P. M. & Vajtai, R., 2010, In : ACS Nano. 4, 6, p. 3318-3324 7 p.

Research output: Contribution to journal › Article › Scientific › peer-review

Field effect transistors

Nanotubes

Polyethylene glycols

Carbon Nanotubes

glycols