Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Ralf-Johan Lamminmäki"'
Autor:
Sami Auvinen, Erik M. Vartiainen, Veli-Matti Taavitsainen, Ralf-Johan Lamminmäki, Juho-Pertti Jalava, Matti Alatalo, Heikki Haario, Minna Lindholm
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 167:105-118
In recent decades, the use of nanomaterials has become very common. Different nanomaterials are being used in over 1600 consumer products. Nanomaterials have been defined as having at least one dimension in the range of 1−100 nm. Such materials oft
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac9515e728d31240c3ee4e50d3c531d6
https://doi.org/10.1016/j.jqsrt.2015.08.007
https://doi.org/10.1016/j.jqsrt.2015.08.007
Autor:
Erik M. Vartiainen, Juho-Pertti Jalava, Heikki Haario, Sami Auvinen, Matti Alatalo, Ralf-Johan Lamminmäki
Publikováno v:
The Journal of Physical Chemistry C. 117:3503-3512
Wavelength-dependent refractive index functions (RIFs) of (TiO2)n nanoparticles (n = 2, 8, 18, 28, or 38) have been calculated by using the data from our previous density functional theory and time-dependent density functional theory photoabsorption
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03906a5bba3b043699987d8eeafabbdb
https://doi.org/10.1021/jp305303q
https://doi.org/10.1021/jp305303q
Publikováno v:
The Journal of Physical Chemistry C. 115:8484-8493
Electronic and spectral properties of small TiO2 particles have been studied in order to gain more knowledge on their dependence on the crystal- and particle-size distributions. Our goal is to extend the recently developed light scattering based meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6aa5c2e32f3cc5cc47760bba1d6df755
https://doi.org/10.1021/jp112114p
https://doi.org/10.1021/jp112114p
Autor:
Nikolai V. Tkachenko, Ralf-Johan Lamminmäki, Saila Karvinen, Helge Lemmetyinen, Visa Vehmanen, Miia Salmi
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 175:8-14
The transient absorption properties of TiO 2 particles were studied by femtosecond transient absorption spectroscopy. For the transition metal (Cr and/or Fe)-doped samples the transient absorption spectra were observed to shift to the shorter wavelen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0c5cd6c81a363055a743b3f18d987a6
https://doi.org/10.1016/j.jphotochem.2005.03.022
https://doi.org/10.1016/j.jphotochem.2005.03.022
Autor:
Ralf-Johan Lamminmäki, Visa Vehmanen, Nikolai V. Tkachenko, Helge Lemmetyinen, Miia Salmi, Saila Karvinen
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 163:395-401
The transient absorption properties of TiO2 nanocrystalline anatase powder samples calcinated at different temperatures were studied by femtosecond diffuse reflectance spectroscopy. The measurements were performed in TiO2 aqueous suspensions in the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d8cffc06017e540ffc737ee193da362
https://doi.org/10.1016/j.jphotochem.2004.01.009
https://doi.org/10.1016/j.jphotochem.2004.01.009
Autor:
Saila Karvinen, Ralf-Johan Lamminmäki
Publikováno v:
Solid State Sciences. 5:1159-1166
Mesoporous anatase TiO 2 was prepared for photocatalysis from TiOSO 4 solution. The samples were undoped or doped with chromium. The diffuse reflectance spectra of the samples and the morphology of the TiO 2 particles exhibited strong dependency on t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b2a2e0d9ceb211337c04aa7ca1b08f4
https://doi.org/10.1016/s1293-2558(03)00147-x
https://doi.org/10.1016/s1293-2558(03)00147-x
Autor:
L. Schwarz, Jorma Hölsä, M. Kloss, Ralf-Johan Lamminmäki, Jussi Valkonen, Sami Areva, Mika Lastusaari, Manu Lahtinen
Publikováno v:
Materials Science Forum. :644-648
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f72c96f7e8f5b2412db847aa2b958ce
https://doi.org/10.4028/www.scientific.net/msf.378-381.644
https://doi.org/10.4028/www.scientific.net/msf.378-381.644
Publikováno v:
Journal of Alloys and Compounds. :811-815
The luminescence materials of the new generation containing gadolinium have received considerable attention because of the quantum cutting and down-conversion exhibited. The prerequisite information for studies of these phenomena include a detailed a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9efcb02ce6fd6df4e88b8863e0116ee
https://doi.org/10.1016/s0925-8388(01)01150-1
https://doi.org/10.1016/s0925-8388(01)01150-1
Publikováno v:
Journal of Alloys and Compounds. :498-504
The average magnetic susceptibilities of polycrystalline rare earth oxychlorides (REOCl; RE=Ce, Pr, Nd, Sm, Tb, Dy and Ho) were measured between 2 and 300 K. The susceptibility of most REOCl samples follows the paramagnetic Curie–Weiss behaviour do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7a971552eee57c42fa706867c142e21
https://doi.org/10.1016/s0925-8388(00)00634-4
https://doi.org/10.1016/s0925-8388(00)00634-4
Autor:
Pierre Porcher, Jorma Hölsä, Mika Lastusaari, E. P. Chukalina, Marina N. Popova, Ralf-Johan Lamminmäki
Publikováno v:
Journal of Luminescence. :1052-1055
The optical UV-vis-NIR as well as high-resolution FT-IR absorption spectra of the tetragonal HoOCl were measured at selected temperatures between 9 and 300 K. The luminescence spectra of LaOCl : Ho3+ and GdOCl : Ho3+ were obtained at 77 K and room te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42b76e69765b9f8a7bf265d4fc46bb1d
https://doi.org/10.1016/s0022-2313(99)00536-0
https://doi.org/10.1016/s0022-2313(99)00536-0