Search Results - "Torma, P."

Bulk Transfer Coefficients Estimated From Eddy‐Covariance Measurements Over Lakes and Reservoirs by Guseva, S., Armani, F., Desai, A. R., Dias, N. L., Friborg, T., Iwata, H., Jansen, J., Lükő, G., Mammarella, I., Repina, I., Rutgersson, A., Sachs, T., Scholz, K., Spank, U., Stepanenko, V., Torma, P., Vesala, T., Lorke, A.

“…The drag coefficient, Stanton number and Dalton number are of particular importance for estimating the surface turbulent fluxes of momentum, heat and water…”
Get full text

Spatial coherence properties of organic molecules coupled to plasmonic surface lattice resonances in the weak and strong coupling regimes by Shi, L, Hakala, T K, Rekola, H T, Martikainen, J-P, Moerland, R J, Törmä, P

“…We study spatial coherence properties of a system composed of periodic silver nanoparticle arrays covered with a fluorescent organic molecule (DiD) film. The…”
Get full text

Comparing Methods for Computing the Time of Concentration in a Medium-Sized Hungarian Catchment by Nagy, E. D., Torma, P., Bene, K.

“…One of the most often-used parameters that describes morphology and runoff from a watershed is the time of concentration (Tc). At gauged watersheds, Tc can be…”
Get full text

Lasing in dark and bright modes of a finite-sized plasmonic lattice by Hakala, T. K., Rekola, H. T., Väkeväinen, A. I., Martikainen, J.-P., Nečada, M., Moilanen, A. J., Törmä, P.

“…Lasing at the nanometre scale promises strong light-matter interactions and ultrafast operation. Plasmonic resonances supported by metallic nanoparticles have…”
Get full text

Enhanced electroluminescence in 405 nm InGaN/GaN LEDs by optimized electron blocking layer by Svensk, O., Törmä, P.T., Suihkonen, S., Ali, M., Lipsanen, H., Sopanen, M., Odnoblyudov, M.A., Bougrov, V.E.

“…In this work, we have investigated the effect of AlGaN electron blocking layer (EBL) doping level and thickness on the optical properties of near-UV (405 nm)…”
Get full text

Technology development for soft X-ray spectroscopy by Törmä, P.T., Sipilä, H.J., Koskinen, T., Mattila, M.

“…X-ray spectroscopy instruments lose part of their performance due to the lack of suitable components for soft X-ray region below 1keV. Therefore, in the…”
Get full text

Plasmonic Surface Lattice Resonances at the Strong Coupling Regime by Väkeväinen, A. I, Moerland, R. J, Rekola, H. T, Eskelinen, A.-P, Martikainen, J.-P, Kim, D.-H, Törmä, P

“…We show strong coupling involving three different types of resonances in plasmonic nanoarrays: surface lattice resonances (SLRs), localized surface plasmon…”
Get full text

Surface lattice resonances and magneto-optical response in magnetic nanoparticle arrays by Kataja, M., Hakala, T. K., Julku, A., Huttunen, M. J., van Dijken, S., Törmä, P.

“…Structuring metallic and magnetic materials on subwavelength scales allows for extreme confinement and a versatile design of electromagnetic field modes. This…”
Get full text

Fabrication of GaN structures with embedded network of voids using pillar patterned GaN templates by Svensk, O., Ali, M., Riuttanen, L., Törmä, P.T., Sintonen, S., Suihkonen, S., Sopanen, M., Lipsanen, H.

“…In this paper we report on the MOCVD growth and characterization of GaN structures and InGaN single quantum wells grown on pillar patterned GaN/sapphire…”
Get full text

Lasing at K Points of a Honeycomb Plasmonic Lattice by Guo, R, Nečada, M, Hakala, T K, Väkeväinen, A I, Törmä, P

“…We study lasing at the high-symmetry points of the Brillouin zone in a honeycomb plasmonic lattice. We use symmetry arguments to define singlet and doublet…”
Get full text

Effect of InGaN underneath layer on MOVPE-grown InGaN/GaN blue LEDs by Törmä, P.T., Svensk, O., Ali, M., Suihkonen, S., Sopanen, M., Odnoblyudov, M.A., Bougrov, V.E.

“…This paper describes a study on the effect of InGaN underneath layer (UL) on InGaN/GaN LEDs operating in the spectral range from 425 to 460 nm. Samples were…”
Get full text

Vacuum Rabi splitting and strong-coupling dynamics for surface-plasmon polaritons and rhodamine 6G molecules by Hakala, T K, Toppari, J J, Kuzyk, A, Pettersson, M, Tikkanen, H, Kunttu, H, Törmä, P

“…We report on strong coupling between surface-plasmon polaritons (SPP) and Rhodamine 6G (R6G) molecules, with double vacuum Rabi splitting energies up to 230…”
Get full text

Control of the morphology of InGaN/GaN quantum wells grown by metalorganic chemical vapor deposition by Suihkonen, S., Lang, T., Svensk, O., Sormunen, J., Törmä, P.T., Sopanen, M., Lipsanen, H., Odnoblyudov, M.A., Bougrov, V.E.

“…Various techniques for morphological evolution of InGaN/GaN multiple quantum well (MQW) structures grown by metalorganic chemical vapor deposition have been…”
Get full text

Controlling quantum dot emission by plasmonic nanoarrays by Guo, R, Derom, S, Väkeväinen, A I, van Dijk-Moes, R J A, Liljeroth, P, Vanmaekelbergh, D, Törmä, P

“…Metallic nanoparticle arrays support localized surface plasmon resonances (LSPRs) and propagating surface lattice resonances (SLRs). We study the control of…”
Get full text

Dynamics of an impurity in a one-dimensional lattice by Massel, F, Kantian, A, Daley, A J, Giamarchi, T, Törmä, P

“…We study the non-equilibrium dynamics of an impurity in a harmonic trap that is kicked with a well-defined quasi-momentum, and interacts with a bath of free…”
Get full text

Fulde-Ferrell states and Berezinskii-Kosterlitz-Thouless phase transition in two-dimensional imbalanced Fermi gases by Yin, Shaoyu, Martikainen, J.-P., Törmä, P.

“…We study the superfluid properties of two-dimensional spin-population-imbalanced Fermi gases to explore the interplay between the…”
Get full text

Reduced photoluminescence from InGaN/GaN multiple quantum well structures following 40 Mev iodine ion irradiation by ALI, M, SVENSK, O, ZHEN, Z, SUIHKONEN, S, TÖRMÄ, P. T, LIPSANEN, H, SOPANEN, M, HJORT, K, JENSEN, J

“…The effects following ion irradiation of GaN-based devices are still limited. Here we present data on the photoluminescence (PL) emitted from InGaN/GaN…”
Get full text

MOVPE growth and characterization of InAlGaN films and InGaN/InAlGaN MQW structures by Suihkonen, S., Svensk, O., Törmä, P.T., Ali, M., Sopanen, M., Lipsanen, H., Odnoblyudo, M.A., Bougrov, V.E.

“…We report on the growth and characterization of InAlGaN films and InGaN/InAlGaN MQW structures by metalorganic vapor phase epitaxy (MOVPE). The composition of…”
Get full text

Nonlocal quantum fluctuations and fermionic superfluidity in the imbalanced attractive Hubbard model by Heikkinen, M O J, Kim, D-H, Troyer, M, Törmä, P

“…We study fermionic superfluidity in strongly anisotropic optical lattices with attractive interactions utilizing the cluster dynamical mean-field theory…”
Get full text

Void shape control in GaN re-grown on hexagonally patterned mask-less GaN by Ali, M., Romanov, A.E., Suihkonen, S., Svensk, O., Törmä, P.T., Sopanen, M., Lipsanen, H., Odnoblyudov, M.A., Bougrov, V.E.

“…We present the results of GaN re-growth on hexagonally patterned GaN templates. Sapphire was used as the original substrate and the samples were grown by…”
Get full text