Jan Mrázek, Ph.D.

Materials for students:

Student materials from lectures can be found here

Education:

2006 - 2011: Bilateral Czech-French PhD studies at Charles University, Faculty of Sciences and Universite de Rennes. Doctoral thesis: „Sol-gel synthesis of ternary Zn_xTi_yO_z nanostructures for applications in solar cell technologies and photonics” graduated in June 2011, received Ph.D. title

1996 - 2005: Institute of Chemical Technology, Prague - MSc degree, branch Material Engineering

Current projects:

Principal investigator of projects:

• Colloidal diffuse sources for the technology of power semiconductor devices

Member of projects:

• Novel optical fibers and their spectroscopy for fiber lasers operating beyond 2 um
• Synthesis, characterization and tailoring the properties of luminescent nanocomposites

Selected past projects:

Principal investigator of the projects:

• Preparation of fiber lasers with a core from transparent ceramics and their use for laser surface modification of materials
• Nanoparticle-doped soft-glass optical fibers for fiber-lasers
• Novel thulium-doped nanomaterials for active optical fibers

Member of projects:

• Novel silica-based Ho -doped nanomaterials for 2-μm-class fibre laser research
• Bragg fibers for delivery of high laser powers
• Preparation and properties of silica-based optical glasses containing rare-earth- and chromium-doped nano-particles
• III-V semiconductor heterostructures and nanostructures towards innovative electronic and photonic applications
• Role of the interface in the preparation of high quality Schottky barriers on III-V semiconductors
• Regulation of morphogenesis of plant cells and organs
• Thulium doped silica fibres for fibre amplifiers
• Novel approaches to reversible opto-electrochemical fibre sensing of chlorine in water
• Air-silica microstructure fibers for evanescent-wave chemical sensing

Publications:

Books:

1. J. Mrázek: “Sol-gel synthesis of ternary Zn-(x)-Ti-(y)-O-(z) nanostructures for solar cell technologies and photonics”, Synthesis and characterization of nanocrystalline zinc titanates, LAP Lambert Academic Publishing (2012), ISBN-13: 978-3-659-19110-7, book
2. Kašík, O. Podrazký, J. Mrázek, J. Aubrecht, V. Matějec: „Chlorine in water“, R. Mangione, D. Carlyle (Eds.): „Chlorine: Properties, applications and health effects“, Nova Science Publishers, Inc., 2011, book chapter

Journal papers:

1. Kašík, I., Peterka, P., Mrázek, J., Honzátko, P. Silica optical fibers doped with nanoparticles for fiber lasers and broadband sources. Current Nanoscience. 2016, 12 (3), 277-290.
2. Vaisocherová-Lísalová, H., Víšová, I., Ermini, M., Špringer, T., Song, X., Mrázek, J., Lamačová, J., Scott Lynn, N., Šedivák, P., Homola, J. Low-fouling surface plasmon resonance biosensor for multi-step detection of foodborne bacterial pathogens in complex food samples. Biosensors and Bioelectronics. 2016, 80, 84-90. 
3. Turtos, R. M., Gundacker, S., Lucchini, M. T., Procházková, L., Čuba, V., Burešová, H., Mrázek, J., Nikl, M., Lecoq, P., Auffray, E. Timing performance of ZnO:Ga nanopowder composite scintillators. Physical Status Solidi RRL. 2016, 10 (11), 843–847.
4. Procházková, L., Čuba, V., Mrázek, J., Beitlerová, A., Jará, V., Nikl, M. Preparation of Zn(Cd)O: Ga-SiO2 composite scintillating materials. Radiation Measurements. 2016, 90, 59-63. 
5. Mrázek, J., Surýnek, M., Bakardjieva, S., Buršík, J., Proboštová, J., Kašík, I. Luminescence properties of nanocrystalline europium titanate Eu2Ti2O7. Journal of Alloys and Compounds. 2015, 645, 57-63. 
6. Mrázek, J., Potel, M., Buršík, J., Mráček, A., Kallistová, A., Jonášová, Š., Boháček, J., Kašík, I. Sol-gel synthesis and crystallization kinetics of dysprosium-titanate Dy2Ti2O7 for photonic applications. Materials Chemistry and Physics. 2015, 168, 159-167. 
7. Cui, Q., Podrazký, O., Mrázek, J., Proboštová, J., Kašík, I. Tapered-fiber optical sensor for physiological pH range. IEEE Sensors Journal, 2015, 15 (9), 4967-4973.
8. Mrázek, J., Surýnek, M., Bakardjieva, S., Buršík, J., Kašík, I. Synthesis and crystallization mechanism of europium-titanate Eu2Ti2O7. Journal of Crystal Growth. 2014, 391, 25-32. 
9. Mrázek, J., Kašík, I., Procházková, L., Čuba, V., Aubrecht, J., Cajzl, J., Podrazký, O., Peterka, P., Nikl, M. Active optical fibers doped with ceramic nanocrystals. Advances in Electrical and Electronic Engineering. 2014, 12 (6), 567-574.
10. Kašík, I., Podrazký, O., Mrázek, J., Cajzl, J., Aubrecht, J., Proboštová, J., Peterka, P., Honzátko, P., Dhar, A. Erbium and Al2O3 nanocrystals -doped silica optical fibers. Bulletin of the Polish Academy of Sciences, Technical Sciences. 2014, 62, 641-646. 
11. Podrazký, O., Matějec, V., Mrázek, J., Martan, T., Aubrecht, J., Kašík, I. Tapered optical fiber sensor for detection of pH in microscopic volumes. Sensors & Transducers. 2014, 27, 312-318.
12. Matějec, V., Bartoň, I., Mrázek, J., Podrazký, O. U-shaped fiber-optic detection elements for investigation of photocatalytic decomposition of toluene dissolved in water. Sensors & Transducers. 2014, 27, 244-252.
13. Kašík, I., Podrazký, O., Mrázek, J., Martan, T., Matějec, V., Hoyerová, K., Kamínek, M. In vivo optical detection of pH in microscopic tissue samples of Arabidopsis thaliana. Materials Science & Engineering C. 2013, 33 (8), 4809-4815.

Příspěvky na konferencích:

1.  
2. Proboštová, J., Slánička, J., Mrázek, J., Podrazký, O., Benda, A., Peterka, P. Measurement of refractive index profile of non-symmetric, complex silica preforms with high refractive index differences. In: Micro-Structured and Specialty Optical Fibres IV (SPIE). 2016, 9886, p. 98861G-98861G-8.
3. Vytykáčová, S., Mrázek, J., Proboštová, J., Kašík, I. Optical properties of nanocrystalline (Ho0.05Y0.95)2Ti2O7 for optical amplifiers. In: Photonic Crystal Materials and Devices XII (SPIE). 2016, 9885, p. 98851F-98851F-7.
4. Podrazký, O., Mrázek, J., Vytykáčová, S., Proboštová, J., Kašík, I. Fiber-optic pH sensing system with microscopic spatial resolution. In: Optical Sensors 2015 (SPIE). 2015, 9506, p. 950612.
5. Mrázek, J., Kašík, I., Boháček, J., Proboštová, J., Aubrecht, J., Podrazký, O., Cajzl, J., Honzátko, P. Special optical fibers doped with nanocrystalline holmium-yttrium titanates (HoxY1-x)2Ti2O7 for fiber-lasers. In: Micro-structured and Specialty Optical Fibres IV (SPIE). 2015, 9507, p. 950703.
6. Cajzl, J., Peterka, P., Honzátko, P., Mrázek, J., Podrazký, O., Todorov, F., Gladkov, P., Sahu, J. K., Nunez-Valazquez, M., Nekvindová, P., Kašík, I. Characterization of fluorescence lifetime of Tm-doped fibers with increased quantum conversion efficiency. In: Photonics, Devices and Systems VI (SPIE). 2015, 9450, p. 9450171-9450178.
7. Bartoň, I., Matějec, V., Mrázek, J., Podrazký, O. Preparation and characterization of coatings with a high reflectivity on planar substrates and inside silica tubes. In: Photonics, Devices, and Systems VI (SPIE). 2015, 9450, p. 945019.
8. Mrázek, J., Nikl, M., Kašík, I., Podrazký, O., Aubrecht, J., Beitlerová, A. Nanoparticle-doped radioluminescent silica optical fibers. In: Optical Fibers and Their Applications (SPIE). 2014, 9228, p. 922805-1.
9. Cajzl, J., Podrazký, O., Mrázek, J., Aubrecht, J., Matějec, V., Peterka, P., Nekvindová, P., Kašík, I. The influence of nanostructured optical fiber core matrix on the optical properties of EDFA. In: Optics and Optoelectronics (SPIE).  2013, 8775, p. 8775-09.
10. Bobuskyy, V., Podrazký, O., Mrázek, J. Special optical fibers and fiber capillaries coated with Indium-Tin-Oxide. In: Optics and Optoelectronics (SPIE). 2013, 8775, p. 8775-0I.