Browsing by Author "Jose, G"

Now showing 1 - 2 of 2
  • Item
    Sodium yttrium fluoride based upconversion nano phosphors for biosensing
    (6TH INTERNATIONAL CONFERENCE ON OPTICAL, OPTOELECTRONIC AND PHOTONIC MATERIALS AND APPLICATIONS (ICOOPMA) 2014, 2015) Nampi, PP; Varma, H; Biju, PR; Kakkar, T; Jose, G; Saha, S; Millner, P
    In the present study, NaYF4-Yb3+/Er3+ having the composition NaYF4-18%Yb3+/2%Er3+ and NaYF4-20%Yb3+/2%Er3+ with and without the addition of PVP (polyvinyl pyrolidone) have been synthesised by a solution method using NaF, yttrium nitrate, ytterbium nitrate and erbium nitrate as precursors. Upconversion spectra of prepared nanomaterial under 980 nm laser excitation have been studied. The variation in upconversion spectra with new born calf serum and myoglobin has been studied. Myoglobin (Mb) may be helpful when used in conjunction with other cardiac markers for rapid determination of acute myocardial ischemia, especially in patients with a typical chest pain or nonspecific ECG changes. The variation of UC fluorescence with addition of Mb indicates the suitability of using NaYF4 based UC nanoparticles in cardiac marker detection. The detailed study is currently under progress.
  • Item
    Sol-gel nanoporous silica as substrate for immobilization of conjugated biomolecules for application as fluorescence resonance energy transfer (FRET) based biosensor
    (Sensors and Actuators B: Chemical., 2013-06) Nampi, PP; Kartha, CC; Jose, G; Anilkumar, PR; Anilkumar, T; Varma, HK