Field-emission light sources for lab-on-a-chip microdevices

• Autorzy: Górecka-Drzazga A. , Cichy B. , Szczepańska P. , Walczak R. , Dziuban J.
• Języki publikacji: EN

Abstrakty

EN

Microfluidic devices called lab-on-a-chips utilize two kinds of characterization of a biosample, which are based on spectrofluorimetric and spectrophotometric methodologies. Lab-on-a-chips are equipped with an optical instrumentation and a software system that allow detecting of the optical signals and their processing into spectral characteristics. In the paper, technology of lab-on-a-chip (cytometer microdevice) and miniature silicon-glass field-emission light source (FELS) is described. Electrons emitted from a silicon cathode covered with carbon nanotubes excite light emission from nanocrystalline rare earth doped yttrium oxide phosphor (anode). The emitted light can be precisely tailored to the main absorption line of a fluorescent marker. The presented system has been successfully used for testing of the cow embryos as well as fluorescent-marked porcine oocytes.

Słowa kluczowe

EN

lab-on-a-chip; field emission; light source; microcytometer

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2012
• Tom: Vol. 60, nr 1
• Strony: 13--17
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Górecka-Drzazga A.

autor

Cichy B.

autor

Szczepańska P.

autor

Walczak R.

autor

Dziuban J.

• Faculty of Microsystem Electronics and Photonics, Department of Microengineering and Photovoltaics, Wrocław University of Technology, 11/17 Z. Janiszewskiego St., 50-372 Wrocław, Poland,

Bibliografia

• [1] B. Kuswandi, N. J. Huskens, and W. Verboom, “Optical sensing systems for microfluidic devices: a review”, Analytica Chimica Acta 601, 141 (2007).
• [2] S. Bargiel, R. Walczak, and J. Dziuban, “Microcytometer with simultaneous photometric and fluorometric characterization of biosamples”, Proc. Eurosensors XXII, Dresden, Germany 1, 517–519 (2008).
• [3] P. Szczepańska, R.Walczak, J. Dziuban, M. Jackowska, B. Kempisty, J. Jaśkowski, and S. Bargiel, “Lab-on-chip quality classification of porcine/bovine oocytes”, Procedia Chemistry 1, 341–344 (2009).
• [4] B. Cichy, A. Górecka-Drzazga, and J.A. Dziuban, “Fieldemission light sources utilizing carbon nanotubes and composite phosphor made of SiO2 nanospheres covered with Y2O3:Eu”, J. Vac. Sci. Technol. B 27, 757–780 (2009).
• [5] N. Vu, T.K. Anh, G.C. Yi, and W. Stręk, “Photoluminescence and cathodoluminescence properties of Y2O3:Eu nanophosphors prepared by combustion synthesis”, J. Luminescence 122–123, 776–779 (2007).
• [6] J. Zhang, J. Ning, X. Liu, Y. Pan, and L. Huang, “A novel synthesis of phase-pure ultrafine YAG:Tb phosphor with different Tb concentration”, Materials Letters 57 (20), 3077–3081 (2003).
• [7] S. Shikao and W. Jiye, “Combustion synthesis of Eu3+ activated Y3Al5O12 phosphor nanoparticles”, J. Alloys and Compounds 327 (1–2), 82–86 (2001).