Fluorescent nano-particles for multi-photon thermal sensing

详细信息    查看全文

• 作者：D. Jaque^a ; ^{daniel.jaque@uam.es} ; L.M. Maestro^a ; E. Escudero^a ; E. Mart&#237 ; n Rodr&#237 ; guez^b ; J.A. Capobianco^b ; F. Vetrone^c ; A. Juarranz de la Fuente^d ; F. Sanz-Rodr&#237 ; guez^d ; M.C. Iglesias-de la Cruz^e ; C. Jacinto^f ; U. Rocha^f ; J. Garc&#237 ; a Solé ; ^a
• 关键词：Bio-photonics ; Two-photon luminescence ; Nanothermometry ; Quantum dots ; Rare earth doped nano-crystals ; Confocal microscopy
• 刊名：Journal of Luminescence
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：133
• 期：Complete
• 页码：249-253
• 全文大小：366 K

文摘

In this work we report on the ability of Er/Yb co-doped NaYF₄ nano-crystals and CdTe Quantum Dots as two-photon excited fluorescent nano-thermometers. The basic physical phenomena causing the thermal sensitivity of the two-photon excited emission bands have been discussed and the maximum thermal resolution achievable in each case has been estimated. The practical application of both systems for thermal sensing at the micro-scale in biological systems is demonstrated. In particular, they have been used to evaluate the thermal loading induced by tightly focused laser beams in both living cells and fluids.