title: Optical nanoheater based on the Yb3+-Er3+ co-doped nanoparticles.
abstract: Yb(3+)-Er(3+) co-doped fluoride nanoparticles have been prepared. When pumped by 975 nm laser diode into absorption band of Yb(3+), the laser-induced temperature rise up to 800 degrees C has been detected in the nanoparticles by measuring the ratio of the intensities of the thermalised up-conversion luminescence bands (2)H(11/2)-->(4)I(15/2) and (4)S(3/2)-->(4)I(15/2) of Er(3+). These results show that a controlled optical heating of the nanoparticles and their surrounding nano-volumes can be realised, while the location and temperature rise of the nanoparticles and heated nano-volumes can be detected distantly by means of luminescence.
authors: INPAC-Institute for Nanoscale Physics and Chemistry, Katholieke Universiteit Leuven, Belgium. Victor.Moshchalkov@fys.kuleuven.be
authors: V K
authors: VK
authors: Tikhomirov
authors: K
authors: K
authors: Driesen
authors: V D
authors: VD
authors: Rodriguez
authors: P
authors: P
authors: Gredin
authors: M
authors: M
authors: Mortier
authors: V V
authors: VV
authors: Moshchalkov
mesh_terms: D000042:Absorption; D004871:Erbium / Q000737:chemistry; D005459:Fluorides / Q000737:chemistry*; D007834:Lasers; D049449:Luminescence; D015233:Models, Statistical; D053758:Nanoparticles / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D055100:Optical Fibers; D055095:Optics and Photonics; D010777:Photochemistry / Q000379:methods; D011208:Powders / Q000737:chemistry; D013696:Temperature; D015018:Ytterbium / Q000737:chemistry
chemical_list: D011208:Powders; D004871:Erbium; D015018:Ytterbium; D005459:Fluorides