Numerical weather predicition and climate models require accurate and continuous measurements of the atmosphere. Radiosoundings conducted daily all over the world provide the backbone for these measurements thanks to their ...

Triplet-triplet annihilation upconversion (TTAUC) is an efficient process for photon upconversion: low energy light is absorbed and high energy light is emitted by the system. In this work, two different porphyrins, zinc ...

Ilmastonmuutos on pääosin ihmisen aiheuttama ympäristöongelma, joka johtuu kasvihuonekaasujen lisääntyneestä määrästä maapallon ilmakehässä. Yksilöt täytyy saada toimimaan ilmastonmuutoksen hillitsemiseksi, ja aiemman ...

Sähköistä detektiota hyödyntävillä anturiteknologioilla on jo pitkään voitu havaita ilman pienhiukkasia, jotka ovat liian pieniä optisella detektiolla havaittaviksi. Valitettavasti näiden sähköisten menetelmien mittaamien ...

The study of ultrafast instabilities in optics is one of the key research area in nonlinear science. Optical fibers constitute an excellent testbed for the study of complex dynamics and instabilities because of the controlled ...

Splines are polynomial curves. They are used for example to model complicated shapes in computer programs and science. They can be also used to construct planes. Those planes can be used to easily model complicated surfaces. ...

This work studied different techniques to prepare particle containing phosphate glasses. Additionally, a process to sinter these glasses by hot uniaxial pressing was studied and developed. Our goal was to prepare to create ...