Ultrasound-modulated fluorescence from rhodamine B aqueous solution.
We report experimentally observed ultrasound-modulated fluorescence (UMF) from a submillimeter tube filled with rhodamine B aqueous solution. The tube was submerged in water and a scattering medium. Based on the measured data, we find that the UMF signals might be generated from three mechanisms: modulation of the excitation light, modulation of the emission light, and modulation of the properties of fluorophore. In addition, a linear relationship between the UMF and the drive voltage applied to the ultrasound transducer is found.
Yuan
Baohong
B
Catholic University of America, Department of Biomedical Engineering, 620 Michigan Avenue North East, Washington, DC 20064, USA. yuan@cua.edu
Liu
Yuan
Y
D012235:Rhodamines / Q000737:chemistry* / Q000528:radiation effects*; D012996:Solutions; D013010:Sonication; D013050:Spectrometry, Fluorescence / Q000379:methods*; D014867:Water / Q000737:chemistry*
D012235:Rhodamines; D012996:Solutions; D014867:Water; C029773:rhodamine B