1990 …2019
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Research Output 1990 2019

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2018
7 Citations (Scopus)

A numerical study on the design trade-offs of a thin-film thermoelectric generator for large-area applications

Tappura, K., 1 May 2018, In : Renewable Energy. 120, p. 78-87 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Thin films
Thermal gradients
Heat transfer
Thin film devices
Energy harvesting

A Thin-Film Thermoelectric Generator for Large-Area Applications

Tappura, K. & Jaakkola, K., 2018, In : Proceedings. 2, 13, 779.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Sensor nodes
Thin films
Sensors
Thermal gradients
Heat flux

Enhancing the Performance of Commercial Infrared Detectors by Surface Plasmons

Tappura, K., 2018, In : Proceedings. 2, 13, 63.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
infrared detectors
plasmons
cost reduction
detectors
micrometers

Exploitation of Transparent Conductive Oxides in the Implementation of a Window-Integrated Wireless Sensor Node

Jaakkola, K. & Tappura, K., 1 Sep 2018, In : IEEE Sensors Journal. 18, 17, p. 7193-7202 10 p., 8401879.

Research output: Contribution to journalArticleScientificpeer-review

exploitation
Sensor nodes
antennas
Zinc oxide
zinc oxides

Silicon Based Nano-Thermoelectric Bolometers for Infrared Detection

Varpula, A., Grigoras, K., Tappura, K., Timofeev, A., Shchepetov, A., Hassel, J., Ahopelto, J. & Prunnila, M., 6 Dec 2018, In : Proceedings. 2, 5 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
bolometers
photometers
silicon
membranes
costs
2017
5 Citations (Scopus)

Fluorimetric oxygen sensor with an efficient optical read-out for in vitro cell models

Välimäki, H., Verho, J., Kreutzer, J., Kattipparambil Rajan, D., Ryynänen, T., Pekkanen-Mattila, M., Ahola, A., Tappura, K., Kallio, P. & Lekkala, J., 1 Jan 2017, In : Sensors and Actuators B: Chemical. 249, p. 738-746 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Oxygen sensors
Polystyrenes
Lenses
sensors
polystyrene
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 journalArticleScientificpeer-review

Bolometers
Focal plane arrays
bolometers
focal plane devices
inductance
2016

Fluorimetric oxygen sensor for in vitro cell models

Välimäki, H., Kreutzer, J., Verho, J., Tappura, K. & Lekkala, J., 2016, In : Procedia Engineering. 168, p. 610-613

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Oxygen sensors
Dyes
Oxygen
Polystyrenes
Sensors
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 journalArticleScientificpeer-review

Open Access
Silicon
Thin films
Silicon solar cells
Substrates
Amorphous silicon
2015
18 Citations (Scopus)

Si, GaAs, and InP as cathode materials for photon-enhanced thermionic emission solar cells

Varpula, A., Tappura, K. & Prunnila, M., 2015, In : Solar Energy Materials and Solar Cells. 134, p. 351-358

Research output: Contribution to journalArticleScientificpeer-review

Thermionic emission
Solar cells
Cathodes
Photons
High temperature operations
3 Citations (Scopus)

van der Waals interactions are critical in Car-Parrinello molecular dynamics simulations of porphyrin-fullerene dyads

Karilainen, T., Cramariuc, O., Kuisma, M., Tappura, K. & Hukka, T. I., 2015, In : Journal of Computational Chemistry. 36, 9, p. 612-621

Research output: Contribution to journalArticleScientificpeer-review

Porphyrin
Fullerenes
Van Der Waals
Porphyrins
Molecular Dynamics Simulation
2014
24 Citations (Scopus)

Printed environmentally friendly supercapacitors with ionic liquid electrolytes on paper

Pettersson, F., Keskinen, J., Remonen, T., von Hertzen, L., Jansson, E., Tappura, K., Zhang, Y., Wilen, C-E. & Österbacka, R., 2014, In : Journal of Power Sources. 271, p. 298-304 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Ionic Liquids
electrochemical capacitors
Ionic liquids
Electrolytes
choline
2013
1 Citation (Scopus)

Self-assembly of pyridine-modified lipoic acid derivatives on gold and their interaction with thyroxine (T4)

Albers, W. M., Milani, R., Tappura, K., Munter, T., Resnati, G. & Metrangolo, P., 2013, In : International Journal of Molecular Sciences. 14, 2, p. 3500-3513 14 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
lipoic acid
thyroxine
Thioctic Acid
Thyroxine
Gold
15 Citations (Scopus)

Surface properties and interaction forces of biopolymer-doped conductive polypyrrole surfaces by atomic force microscopy

Pelto, J., Haimi, S. P., Silander, A., Miettinen, S. S., Tappura, K., Higgins, M. J. & Wallace, G. G., 2013, In : Langmuir. 29, 20, p. 6099-6108 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Biopolymers
biopolymers
polypyrroles
Polypyrroles
surface properties
2012
7 Citations (Scopus)

Cysteine-tagged chimeric avidin forms high binding capacity layers directly on gold

Vikholm-Lundin, I., Auer, S., Paakkunainen, M., Määttä, J. A. E., Munter, T., Leppiniemi, J., Hytönen, V. P. & Tappura, K., 2012, In : Sensors and Actuators B: Chemical. 171-172, p. 440-448 8 p.

Research output: Contribution to journalArticleScientificpeer-review

Avidin
cysteine
Antigens
Antibodies
Gold
10 Citations (Scopus)

Structural and functional characteristics of chimeric avidins physically adsorbed onto functionalized polythiophene thin films

Albers, W. M., Pelto, J. M., Suspène, C., Määttä, J. A., Yassar, A., Hytönen, V. P., Vikholm-Lundin, I. M. & Tappura, K., 2012, In : ACS applied materials & interfaces. 4, 8, p. 4067-4077 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Avidin
Thin films
Polymers
Biosensors
Antibodies
2011

Applying a surface-sensitive fluorescence method to fast on-site detection of cocaine in saliva

Välimäki, H., Auer, S., Hellgren, A-C. & Tappura, K., 2011, In : Procedia Engineering. 25, p. 968-971 4 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Fluorescence
Molecular recognition
Molecules
Antibodies
Lenses
10 Citations (Scopus)

High-Q micromechanical resonators for mass sensing in dissipative media

Tappura, K., Pekko, P. & Seppä, H., 2011, In : Journal of Micromechanics and Microengineering. 21, 6, 7 p., 065002.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Micromechanical resonators
Resonators
Wine
Silicon
Contacts (fluid mechanics)
2010
4 Citations (Scopus)

Applying total internal reflection excitation and super critical angle fluorescence detection to a morphine assay

Välimäki, H., Pulli, T. & Tappura, K., 2010, In : Journal of Fluorescence. 20, 5, p. 1003-1008 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Morphine
Assays
Fluorescence
drug
Antibodies

PYTHIA Project Realizes First All-Si Truly Integrated Mach-Zehnder Biosensor Arrays for Label-free Detection Schemes

Jobst, G., Moser, I., Stoffer, R., Hoekman, M., Heideman, R., Leeuwis, H., Tukkiniemi, K., Tappura, K., Kamakari, S., Nounessis, G., Bhattacharya, S., Rysz, J., Budkowski, A., Kitsara, M., Makarona, E., Petrou, P., Kakabakos, S., Misiakos, K. & Raptis, I., 2010, In : MST News. 1, p. 10-12

Research output: Contribution to journalArticleProfessional

bioinstrumentation
transducers
cartridges
reaction time
delivery
2009
9 Citations (Scopus)

A novel platform for highly surface-sensitive fluorescent measurements applying simultaneous total internal reflection excitation and super critical angle detection

Välimäki, H. & Tappura, K., 2009, In : Chemical Physics Letters. 473, 4 - 6, p. 358 - 362 5 p.

Research output: Contribution to journalArticleScientificpeer-review

platforms
Fluorescence
fluorescence
Polystyrenes
chemical analysis
2008
10 Citations (Scopus)

A comparative evaluation of molecular recognition by monolayers composed of synthetic receptors or oriented antibodies

Vikholm-Lundin, I., Pulli, T., Albers, W. M. & Tappura, K., 2008, In : Biosensors & Bioelectronics. 24, 4, p. 1036 - 1038 3 p.

Research output: Contribution to journalArticleScientificpeer-review

Artificial Receptors
Molecular recognition
Antibodies
Morphine
Monolayers
2007

Huurtumaton pinnoite ja materiaali

Minkkinen, H., Tappura, K., Munter, T., Karttunen, M. & Vikholm-Lundin, I., 2007, In : Innovation. 007116

Research output: Contribution to journalArticleProfessional

34 Citations (Scopus)

Influence of perfluorinated compounds on the properties of model lipid membranes

Matyszewska, D., Tappura, K., Orädd, G. & Bilewicz, R., 2007, In : The Journal of Physical Chemistry B. 111, 33, p. 9908-9918

Research output: Contribution to journalArticleScientificpeer-review

perfluorooctanoic acid
Phosphorylcholine
Membrane Lipids
lipids
membranes
42 Citations (Scopus)

Lipoate-based imprinted self-assembled molecular thin films for biosensor applications

Tappura, K., Vikholm-Lundin, I. & Albers, W. M., 2007, In : Biosensors & Bioelectronics. 22, 6, p. 912-919

Research output: Contribution to journalArticleScientificpeer-review

Biosensing Techniques
Biosensors
Morphine
Ligands
Thin films
2006
5 Citations (Scopus)

Computational analysis of the conformations of a doubly linked porphyrin-fullerene dyad

Tappura, K., Cramariuc, O., Toivonen, T., Hukka, T. & Rantala, T., 2006, In : Chemical Physics Letters. 424, 1-3, p. 156-161 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Fullerenes
Porphyrins
porphyrins
fullerenes
Conformations
11 Citations (Scopus)

Nanomechanical force measurements of gliadin protein interactions

Paananen, A., Tappura, K., Tatham, A. S., Fido, R., Shewry, P. R., Miles, M. & McMaster, T. J., 2006, In : Biopolymers. 83, 6, p. 658-667 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Gliadin
Force measurement
Urea
Proteins
Stretching
2005
11 Citations (Scopus)

Molecular simulations for the conformational assessment of a porphyrin-fullerene dyad in different environments

Tappura, K., Cramariuc, O., Hukka, T. I. & Rantala, T., 2005, In : Physical Chemistry Chemical Physics. 7, 17, p. 3126 - 3131 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Fullerenes
Porphyrins
porphyrins
fullerenes
Conformations
2003
21 Citations (Scopus)

Computational modeling of charge dissipation of fabrics containing conductive fibers

Tappura, K. & Nurmi, S., 2003, In : Journal of Electrostatics. 58, 1-2, p. 117-133 17 p.

Research output: Contribution to journalArticleScientificpeer-review

Static Electricity
dissipation
Chemical Industry
fibers
Fibers
2001
17 Citations (Scopus)

Influence of rotational energy barriers to the conformational search of protein loops in molecular dynamics and ranking the conformations

Tappura, K., 2001, In : Proteins. 44, 3, p. 167-179 13 p.

Research output: Contribution to journalArticleScientificpeer-review

Energy barriers
Dihedral angle
Molecular Dynamics Simulation
Conformations
Molecular dynamics
2000
20 Citations (Scopus)

A new soft‐core potential function for molecular dynamics applied to the prediction of protein loop conformations

Tappura, K., Lahtela-Kakkonen, M. & Teleman, O., 2000, In : Journal of Computational Chemistry. 21, 5, p. 388 - 397 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Potential Function
Conformation
Molecular Dynamics
Conformations
Molecular dynamics

Proteiinin pienet, mutta tärkeät osat löytyvät uudella menetelmällä

Tappura, K., 2000, In : Tekniikan tekijät. 4, 1, 17.

Research output: Contribution to journalArticleProfessional

1996
11 Citations (Scopus)

Donor levels and the microscopic structure of the DX center in n-type Si-doped AlxGa0.51-xIn0.49P grown by molecular-beam epitaxy

Mäkinen, J., Laine, T., Partanen, J., Saarinen, K., Hautojärvi, P., Tappura, K., Hakkarainen, T., Asonen, H., Pessa, M., Kauppinen, J., Vänttinen, K., Paalanen, M. & Likonen, J., 1996, In : Physical Review B: Condensed Matter. 53, 12, p. 7851-7862 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Molecular beam epitaxy
Vacancies
molecular beam epitaxy
Gas source molecular beam epitaxy
Positron annihilation spectroscopy
1995
16 Citations (Scopus)

GaInAsP gas-source MBE technology

Pessa, M., Tappura, K. & Ovtchinnikov, A., 1995, In : Thin Solid Films. 267, p. 99-105 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Molecular beam epitaxy
Gases
Energy gap
Graphite
Chemical analysis
1 Citation (Scopus)

High interface recombination velocity caused by spatially indirect quantum well transition in Al0.55In0.45As/InP heteroface solar cells

Lammasniemi, J., Tappura, K. & Smekalin, K., 1995, In : Journal of Applied Physics. 77, 9

Research output: Contribution to journalArticleScientificpeer-review

solar cells
quantum wells
heterojunctions
homojunctions
light emission
1994

Large area GaInAsP and GaInP solar cells for space applications

Smekalin, K., Tappura, K. & Lammasniemi, J., 1994, In : Physica Scripta. 1994, T54

Research output: Contribution to journalArticleScientificpeer-review

Solar Cells
solar cells
Cell
Antireflection Coating
cells
1993
7 Citations (Scopus)

Electrical and optical properties of GaInAsP grown by gas-source molecular beam epitaxy

Tappura, K., 1993, In : Journal of Applied Physics. 74, 4565.

Research output: Contribution to journalArticleScientificpeer-review

molecular beam epitaxy
electrical properties
optical properties
gases
photoluminescence
10 Citations (Scopus)

Growth of Ga0.29In0.71As0.61P0.39(λ ≈ 1.3 μm) on InP by gas source molecular beam epitaxy

Tappura, K. & Asonen, H., 1993, In : Journal of Crystal Growth. 127, 1-4, p. 217-220

Research output: Contribution to journalArticleScientificpeer-review

Gas source molecular beam epitaxy
Surface morphology
molecular beam epitaxy
Lattice mismatch
Substrates
8 Citations (Scopus)

Unstable regions in the growth of GaInAsP by gas-source molecular beam epitaxy

Tappura, K. & Laurila, J., 1993, In : Journal of Crystal Growth. 131, 3-4, p. 309-315

Research output: Contribution to journalArticleScientificpeer-review

1992
6 Citations (Scopus)

Incorporation of group V elements in gas-source molecular beam epitaxy of GaxIn1-xAsyP1-ywith x ≈ 0.15 and y ≈ 0.33

Tappura, K., 1992, In : Journal of Crystal Growth. 123, 1-2, p. 133-140

Research output: Contribution to journalArticleScientificpeer-review

Gas source molecular beam epitaxy
molecular beam epitaxy
Surface reconstruction
Substrates
gases
1 Citation (Scopus)

Low dark current In0.53Ga0.47As/InP SAM avalanche photodiodes grown by gas-source MBE

Zhang, G., Hakkarainen, T., Rakennus, K., Tappura, K., Asonen, H. & Pessa, M., 1992, In : Journal of Crystal Growth. p. 172-176

Research output: Contribution to journalArticleScientificpeer-review

Avalanche photodiodes
Dark currents
mesas
dark current
Electric breakdown
3 Citations (Scopus)

Temperature dependency of the composition of GaInAsP grown by GSMBE

Tappura, K., Hakkarainen, T., Rakennus, K. & Asonen, H., 1992, In : Journal of Crystal Growth. 120, 1-4, p. 145-149

Research output: Contribution to journalArticleScientificpeer-review

Chemical analysis
Gas source molecular beam epitaxy
Wavelength
Growth temperature
wavelengths
1991

Graded-index strained multiquantum-well GaInAsP lasers grown by gas-source molecular-beam epitaxy: Growth and characterization

Keskinen, J., Asonen, H., Hovinen, M., Tappura, K., Näppi, J. & Pessa, M., 1991, In : Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures. 9, 2, p. 239-242

Research output: Contribution to journalArticleScientificpeer-review

Gas source molecular beam epitaxy
Lasers
Epitaxial growth
Diffraction
Threshold current density
12 Citations (Scopus)

Interface effects on electrical properties of high purity InP grown by gas-source molecular beam epitaxy

Rakennus, K., Tappura, K., Hakkarainen, T., Asonen, H., Laiho, R., Rolfe, S. J. & Dubowski, J. J., 1991, In : Journal of Crystal Growth. 110, 4, p. 910-914

Research output: Contribution to journalArticleScientificpeer-review

Gas source molecular beam epitaxy
Photoluminescence
purity
Electric properties
molecular beam epitaxy
8 Citations (Scopus)

The influence of growth conditions on the composition of GaInAsP grown by gas-source molecular beam epitaxy

Tappura, K., Hakkarainen, T., Rakennus, K., Hovinen, M. & Asonen, H., 1991, In : Journal of Crystal Growth. 112, 1, p. 27-32

Research output: Contribution to journalArticleScientificpeer-review

Gas source molecular beam epitaxy
molecular beam epitaxy
Chemical analysis
gases
Growth temperature
1 Citation (Scopus)

The substrate-epitaxial interface of GaAs and InP grown by GSMBE

Tappura, K., Salokatve, A., Rakennus, K., Asonen, H. & Pessa, M., 1991, In : Journal of Crystal Growth. 107, 1-4, p. 1070-1071

Research output: Contribution to journalArticleScientificpeer-review

1990
4 Citations (Scopus)

Comparative study of the substrate-film interfaces of GaAs grown by two molecular beam epitaxial methods

Tappura, K., Salokatve, A., Rakennus, K., Asonen, H. & Pessa, M., 1990, In : Applied Physics Letters. 57, 22, p. 2313-2314

Research output: Contribution to journalArticleScientificpeer-review

molecular beams
molecular beam epitaxy
homojunctions
hydrogen plasma
depletion
16 Citations (Scopus)

Growth of InP, InGaAs, and InGaAsP on InP by gas-source molecular beam epitaxy

Asonen, H., Rakennus, K., Tappura, K., Hovinen, M. & Pessa, M., 1990, In : Journal of Crystal Growth. 105, 1-4, p. 101-105

Research output: Contribution to journalArticleScientificpeer-review