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

Awards:

Best student’s conference presentation, Inst. Chemical Technology, Prague, 2003

Current projects:

Principal investigator of the projects:

• Novel thulium-doped nanomaterials for active optical fibers

Member of projects:

• Bragg fibers for delivery of high laser powers
• Tm-doped optical fibres for fibre lasers in 2 um spectral range

Selected past projects:

Member of projects:

• 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. J. Mrázek, M. Surýnek, S. Bakardjieva, J. Buršík, I. Kašík: „Synthesis and crystallization mechanism of europium-titanate Eu 2Ti2O7“, Journal of Crystal Growth 391 (2014) 25-32
2. I. Kašík, O. Podrazký, J. Mrázek, T. Martan, V. Matějec, K. Hoyerová, M. Kamínek: „In vivo optical detection of pH in microscopic tissue samples of Arabidopsis thaliana“, Materials Science & Engineering C 33 (2013) 4809-4815
3. J. Mrázek, L. Špaňhel, M. Surýnek, M. Potel, V. Matějec: „Crystallization properties of Re-doped (re = Eu, Er, Tm) Zn(2)tio(4) prepared by the Sol-gel method“, Journal of Alloys and Compounds 509 (2011) 4018-4024
4. G. Krylova, L. Spanhel, A. Brioude, S. Ababou-Girard, J. Mrázek: "Natural superhydrophilicity and photocatalytic properties of sol–gel derived ZnTiO3-ilmenite/r-TiO2 films", Physical Chemistry Chemical Physics 12 (2010) 15101-15110.
5. Kašík, I., Mrázek, J., Martan, T., Pospíšilová, M., Podrazký, O., Matějec, V., Hoyerová, K., Kamínek, M.: "Fiber-optic pH detection in small volumes of biosamples", Analytical and Bioanalytical Chemistry 398 (2010) 1883-1889.
6. Mrázek, J., Spanhel, L., Chadeyron, G., Matějec, V.: "Evolution and Eu3+ doping of sol-gel derived ternary Zn xTiyOz - Nanocrystals", Journal of Physical Chemistry C 114 (2010) 2843-2852.
7. Matějec, V., Mrázek, J., Podrazký, O., Hayer, M., Pospíšilová, M.: "Fiber-optic U-shaped detection elements for the investigation of photocatalytic activity of optical fibers coated with layer of TiO2" Sensor Letters 7 (2009) 900-904.
8. I. Kasik, J. Mrazek, O. Podrazky, M. Seidl, J. Aubrecht, M. Pospisilova, P. Tobiska, V. Matejec, B. Kovacs, A. Markovics, M. Szili: “Fiber- optic detection of chlorine in water", ”, Sensors and Actuators: B 139 (1) (2009) 139-142 
9. V. Matějec, J. Mrázek, M. Hayer, O. Podrazký, J. Kaňka, I. Kašík: “Sensitivity of microstructure fibers to gaseous oxygen“, Materials Science and Engineering C 28 (5-6) (2008), 876-881
10. I. Kašík, J. Mrázek, O. Podrazký, M. Seidl, J. Aubrecht, P. Tobiška, V. Matějec, B. Kovács, A. Markovics, M. Szili: “Preparation and characterization of thin transducer layers sensitive to free chlorine in water“, Materials Science and Engineering C 28 (5-6) (2008), 842-847
11. M. Zaharescu, A Barau, L. Predoana, M Gartner, M Anastasescu, J. Mrázek, 1. Kašík, V. Matějec : "Ti02-Si02 sol-gel hybrid films and their sensitivity to gaseous toluene", J. Non-eryst. Solids, 354,2-9(2008),pp 639 -699.
12. V. Matějec, M. Hayer, J. Mrázek, I. Kašík, O. Podrazký, M. Pospíšilová: „Performance of the sol-gel method for the preparation of optical fibers“, Revue Roumaine de Chimie 52 (10) (2007), 991-998
13. J. Skokankova, J. Mrazek, V. Matejec, M. Hayer, I. Kasik, M. Chomat, D. Berkova, A. Barau, M. Zaharescu, M. Raileanu : “Properties of xerogel layers for the detection of toluene in water“, Materials Science and Engineering C 26 (2-3) (2006), 208-213.
14. V. Matejec, J. Mrazek, M. Hayer, I. Kasik, P. Peterka, J. Kanka, P. Honzatko, D. Berkova : “Microstructure fibers for gas detection“, Materials Science and Engineering C 26 (2-3) (2006), 317-321.
15. I. Kašík, V. Matějec, M. Chomát, M. Hayer, D. Berková, J. Mrázek, J. Skokánková: “Silica-based optical fibres with refractive-index profiles tailored in the region of 1.46-1.62 for fibre-optic chemical detection”, Sensors & Actuators B, 107 (2005) 93-97
16. Matějec V, Mrázek J, Skokánkova J, Chomát M, Kašík I: Title: Optical properties and sensitivity of xerogel detection layers for fiber-optic hydrocarbon sensors, Journal of Sol-gel Science and Technology 32 (1-3), 237-242, 2004
17. J. Mrázek, V. Matějec, M. Hayer, I. Kašík, D. Berková : „Application of the sol-gel method at the fabrication of microstructure fibers Journal of Sol-gel Science and Technology 31 (2004), p. 175-178
18. Cherif K, Mrazek J, Hleli S, Matejec V, Abdelghani A, Chomat M, Jaffrezic-Renault N, Kasik I: : Detection of aromatic hydrocarbons in air and water by using xerogel layers coated on PCS fibers excited by an inclined collimated beam, Sensors and Actuators B-chemical 95 (1-3): 97-106, 2003
19. V. Matějec, M. Chomát, D. Berková, J. Mrázek, R.Ardeleanu, V.Harabagiu, M.Pinteala, B.C.Simionescu : “Detection of toluene dissolved in water by using PCS fibers excited by an inclined collimated beam”, Sensors and Actuators B90 (2003), 204-210
20. M. Chomát, J. Mrázek, V. Matějec, I. Kašík, J. Skokánková : “Investigation of the sensitivity of PCS fibers to changes of light absorption coefficient of the cladding”, Proc. SPIE 5036 : Photonics, Devices and Systems, Prague, May 2002, pp. 72-77.

Conference papers:

1. J. Mrázek, M. Nikl, I. Kašík, O. Podrazký, J. Aubrecht, A. Beitlerová: “Nanoparticle-doped radioluminescent silica optical fibers“, Optical Fibers and Their Applications (SPIE) 9228, 2014, p. 922805-1
2. V. Bobuskyy, O. Podrazký, J. Mrázek: „Special optical fibers and fiber capillaries coated with Indium-Tin-Oxide“, Optics and Optoelectronics (SPIE) 8775, 2013, p. 8775-0I
3. J. Cajzl, O. Podrazký, J. Mrázek, J. Aubrecht, V. Matějec, P. Peterka, P. Nekvindová, I. Kašík: “The influence of nanostructured optical fiber core matrix on the optical properties of EDFA“, Optics and Optoelectronics (SPIE) 8775, 2013, p. 8775-09
4. M. Pospíšilová, J. Aubrecht, T. Martan, J. Mrázek, I. Kašík, V. Matějec: „Dependence of detected intensity of fluorescence of dye on optical fiber tapered tip diameter“, The International Society for Optical Engineering (SPIE) 8073, 2011, 80731C
5. J. Mrázek, I. Kašík, J. Nekola, T. Martan, O. Podrazký, M. Pospíšilová, V. Matějec: „Preparation and characterisation of sensing layers for pH detection in living plant cells“, The International Society for Optical Engineering (SPIE) 8073, 2011, 807318 
6. Martan, T., Pospíšilová, M., Aubrecht, J., Mrázek, J., Podrazký, O., Kašík, I., Matějec, V.: "Tapered optical fibres for local pH detection", Journal of Physics: Conference Series 206 (2010) art.no.012017. 
7. J. Mrazek, L. Spanhel, G. Chadeyron, V. Matejec : ” Preparation of ZnxTiyOz nanostructures and their optical properties”, in Proc. XV International Sol-Gel Conference Sol-Gel 09, Porto de Galinhas, 23-27.8.2009, 150 (poster) 
8. V. Matejec, O. Podrazky, J. Mrazek, M. Hayer, M. Pospisilova, I. Kasik : ” Porous TiO2 layers applied onto silica fibers or inside silica capillaries and their pohotocatalytic activity”, in Proc. XV International Sol-Gel Conference Sol-Gel 09, Porto de Galinhas, 23-27.8.2009, 105 (oral) 
9. I. Kasik, T. Martan, O. Podrazky, J. Mrazek, M. Pospisilová, V. Matejec, „Local real-time detection of pH using fibre tapers“, Proc. SPIE 7356, Optical Sensors 2009, 73561U-1 – 73561U-6 
10. V. Matějec, J. Mrázek, O. Podrazký, M. Hayer, M. Pospíšilová: Preparation and characterisation of silica optical fibers coated with TiO2 porous layers, Proc. 6th Journees Maghreb-Europe, Les Materiaux et Leurs Applications aux Dispositifs Capteurs (MADICA), Enset-Rabat, 30.10.2008- 1.11.2008 
11. T. Martan, I. Kašík, O. Podrazký, J. Mrázek, M. Pospíšilová, J. Aubrecht, V. Matějec, J. Kaňka : „Local Detection of pH Using Optical Fibre Probes“, Proc. 6th Journees Maghreb-Europe, Les Materiaux et Leurs Applications aux Dispositifs Capteurs (MADICA), Enset-Rabat, 30.10.2008- 1.11.2008 A53-1 – A53-2 (oral) 
12. V. Matějec, J. Mrázek, O. Podrazký, M. Hayer, M. Zaharescu, A. Barau, L. Predoana: Preparation and Characterization of Xerogel Layers for Fiber Optic Detection of Gaseous Chemicals, International Conference of Physical Chemistry - ROMPHYSCHEM 13, Bucharest, 3.9.2008 – 5.9.2008 
13. I. Kašík, J. Mrázek, O. Podrazký, M Seidl, J. Aubrecht, M. Pospíšilová, P. Tobiška, V. Matějec, B. Kovacs, A. Markovics, M. Szili: " Detection of chlorine in water", Proc. Europtrode 2008, Dublin, 30.3.2008-2.4.2008, poster 
14. O. Podrazký, J. Mrázek, M Seidl, I. Kašík, P. Tobiška, V. Matějec, T. Martan, J. Aubrecht: "Optical principle of pH measurement for detection of auxin flow through cellular membrane", Proc. SPIE 6585 Optical Sensing Technology and Applications, Prague, April 2007, 65850YI-6580Y. 7. 
15. I. Kašík, J. Mrázek, O. Podrazký, M Seidl, P. Tobiška, V. Matějec, B. Kovacs, A Markovics, M Szili, K. Vlčková: "Preparation and characterization of transducer layers for opto-electrochemical detection of chlorine in water", Proc. SPIE 6585 - Optical Sensing Technology and Applications 2007, Prague, p. 65850Z.1­65850Z.8. 
16. V. Matějec, J. Mrázek, O. Podrazký, J. Kaňka, I. Kašík, M. Pospíšilová: "Microstructure fibers for sensing gaseous hydrocarbons", In Proc. SPIE 6585 - Optical Sensing Technology and Applications, Prague, April 2007,658511.1-658511.9. 
17. J. Mrázek, L. Špaňhel, V. Matějec: "Sol-gel processing and optical properties of Eu3+ ZnxTiyOz Nanostructures", Book of Abstracts XIVth International Sol-gel Conference, Montpellier: ENSCM Communication - Ecole Nationale Superieure de Chimie de Montpellier, 2007, 303. 
18. V. Matějec, J. Mrázek, O. Podrazký: "Preparation ofxerogellayers in microstructure and capillary fibers for the detection of gaseous oxygen and aromatic hydrocarbons", Book of Abstracts XIV th International Sol-gel Conference, Montpellier: ENSCM Communication - Ecole Nationale Superieure de Chimie de Montpellier, 2007, 541. 
19. J. Mrázek, L.Špaňhel, G. Chadeyron, V. Matějec : "Sol-Gel Processing and Optical Propertiesof Eu3+@ZnxTiyOz Nanostructures"Proc.6eme Journeé Sol-Gel Rhone-,2007, oral. 
20. O. Podrazký, V. Matějec, G. Kuncová, M. Pospíšílová, J. Mrázek, I. Kašík, K. Rose, N. Jaffrezic - Renault, S. Dzyadevych, L. Šasek, P. J. Scully: "Optical sensors for monitoring of bioprocesses",Trendy v biomedicínském inženýrství, Prague, September 2007,287-290. 
21. V. Matejec, J. Mrazek, M. Hayer, D. Berkova, I. Kasik, M. Chomat : “Sensitivity of capillary and microstructure fibers modified by xerogel layers with Ru-complex to gaseous oxygen“, Proc. 8th Europt®ode, Tübingen, April 2006, 125. 
22. J. Mrazek, V. Matejec, M. Chomat, I. Kasik, A. Barau, M. Zaharescu : “Sensitivity to toluene of xerogel layers doped with metyl groups and TiOTi chains and applied onto silica optical fibers“, Proc. 8th Europt®ode, Tübingen, April 2006, 133. 
23. J. Mrazek, V. Matejec, M. Hayer, J. Skokankova, I. Kasik, D. Berkova, F. Kostka : “Capillary optical fibers modified by xerogel layers for chemical detection“,In Photonics, Devices, and Systems III. Proceedings from Photonics Prague 2005. Bellingham : SPIE 6180 The International Society for Optical Engineering, 2006, 618013.1-618013.6. 
24. P. Solarik, Z. Burian, I. Kasik, V. Matejec, J. Mrazek, M. Hayer : “Dielectric annular core fiber for optical sensing“, Photonics Europe. Strasbourg, March 2006, 215. 
25. P. Solarik, Z. Burian, I. Kasik, V. Matejec, J. Mrazek, M. Hayer : “Dielectric annular core fiber for optical sensing“, In Proc. SPIE - The International Society for Optical Engineering. Bellingham : SPIE 6180 The International Society for Optical Engineering, 2006, 61891R.1-61891R.9. 
26. J. Mrazek ,V. Matejec, D. Niznansky, J. Skokankova, I. Kasik : ”Preparation and characterization of xerogel layers doped with noble metals nanoparticles“, Proc. Romphyschem 12, Bucharest : "Ilie Murgulescu" Institute of Physical Chemistry Romania, September 2006, lecture. 
27. V. Matejec, M. Hayer, J. Mrazek, I. Kasik, O. Podrazky, M. Pospisilova : “Performance of the sol-gel method for the preparation of optical fibers“, Proc. Romphyschem 12, Bucharest : "Ilie Murgulescu" Institute of Physical Chemistry Romania, September, 2006, 243. 
28. I. Kasik, V. Matejec, M. Chomat, D. Berkova, M. Hayer, J. Mrazek, O. Podrazky: ”Optical fibers for optical sensing“, Proc. ASCOS 2006, Tihany, Hungary, September 2006, invited lecture. 
29. V. Matejec, J. Mrazek, M. Hayer, O. Podrazky, J. Kanka, I. Kasik: ”Sensitivity of microstructure fibers to gaseous oxygen“, MADICA 2006. Recueil des Resumes.Monastir, 2006, 94. 
30. I. Kasik, J. Mrazek, O. Podrazky ,M. Seidl, P. Tobiska, V. Matejec, B. Kovacs, A. Markovics, M. Szili : ”Preparation and characterization of thin sensitive layers for opto-electrochemical detection of chlorine in water“, MADICA 2006. Recueil des Resumes. Monastir, 2006,57. 
31. J. Mrazek, V. Matejec, I. Kasik: ”Preparation and characterization of distributed fiber-optic sensors based on the localized surface plasmon resonance. MADICA 2006. Recueil des Resumes. Monastir, 2006, 85. 
32. M. Zaharescu,A. Barau, L. Predoana, M. Gartner, A. Ghita, J. Mrazek, J. Skokankova, V. Matejec : ”TiO2-SiO2 sol-gel hybrid films for toluene detection“, Proc. XI Conf. on Physics of Non Crystalline Solids. Athens, 2006, 163. 
33. V. Matějec, J. Mrázek, M. Hayer, D. Berková, J. Kaňka, I. Kašík: „Preparation and characterisation of xerogel detection layers applied in capillary or microstructure optical fibers“, 13th International Workshop on SOL-GEL SCIENCE AND TECHNOLOGY, Los Angeles, USA, august 2005, p. 123, extended to J. Sol. Science 
34. J. Mrázek, V. Matějec: „Preparation and optical properties of xerogel layers doped by silver nanoparticles for fiber-optic sensors“, 13th International Workshop on SOL-GEL SCIENCE AND TECHNOLOGY, Los Angeles, USA, august 2005, p. 453 poster, extended to J. Sol. Science 
35. Mrázek Jan, Matějec Vlastimil, Hayer Miloš, Skokánková Jana, Kašík Ivan, Berková Daniela, Kostka František: Capillary optical fibers modified by xerogel layers for chemical detection, Photonics Prague, May 2005 
36. Matějec Vlastimil, Hayer Miloš, Kašík Ivan, Mrázek Jan, Peterka Pavel, Kaňka Jiří, Honzátko Pavel: Microstructure fibers for the development of fiber lasers, Photonics Prague, May 2005, submitted proc. SPIE 
37. V. Matějec, J. Mrázek, M. Hayer, I. Kašík, P. Peterka, J. Kaňka, P. Honzátko, D. Berková: „Microstructure fibers for gas detection“, Recueil des Resumes Madica 2004, Tunis, Tunisia, November 2004, oral presentation A33 
38. J. Mrázek, V. Matějec, M. Chomát: „Comparison of evanescent-wave and leaky-wave fiber optic sensing structures for gas detection“, Recueil des Resumes Madica 2004, Tunis, Tunisia, November 2004, P I-25 submitted to Mat. Sci. and Eng. 
39. J. Skokánková, J. Mrázek, V. Matějec, M. Hayer, I. Kašík, M. Chomát, D. Berková: „Properties of xerogel layers for detection of toluene in water“, Recueil des Resumes Madica 2004, Tunis, Tunisia, November 2004, P I-24, submitted to Mat. Sci. and Eng. 
40. I. Kašík, V. Matějec, M. Chomát, M. Hayer, D. Berková, J. Mrázek, J. Skokánková: “Silica-based optical fibres with tailored refractive-index profiles in the region of 1.46-1.52 for evanescent-wave chemical detection”, Proc. 7th Europtrode, Madrid, April 2004, P27 
41. V. Matějec, J. Mrázek, M. Hayer, I. Kašík, P. Honzátko, P. Peterka, J. Kaňka: “Effects of sol-gel modification of microstructure fibres on their sensitivity to gaseous toluene”, Proc. 7th Europtrode, Madrid, April 2004, P83 
42. K. Rose, S. Dzadevic, N. Jaffrezic-Renault, O. Podrazký, G. Kuncová, J. Mrázek, V. Matějec, J. Young: “Employment of Ormocers for the fabrication of layers sensitive to oxygen and glucose”, Proc. 7th Europtrode, Madrid, April 2004, P23 
43. J. Skokánková, J. Mrázek, V. Matějec, D. Berková, M. Chomát, I. Kašík, P. Šimůnková, A. Szatvanyi, M. Zaharescu, M. Raileanu: “Sensitivity of xerogel layers applied on silica optical fibres top toluene dissolved in water”, Proc. 7th Europtrode, Madrid, April 2004, P25 
44. V. Matějec, M. Hayer, I. Kašík, J. Mrázek, P. Honzátko, P. Peterka, J. Kaňka : „Evanescent-wave sensing of hydrocarbons by using microstructure fibers“, Proc. 1st Int. Meeting on Applied Physics, Badajoz, October 2003, p.903 
45. I. Kašík, V. Matějec, M. Chomát, M. Hayer, J. Mrázek, J. Skokánková : “Silica-based optical materials with tailored refractive-index profiles in the region of 1,45-1,50 for fiber-optic chemical detection”, Proc. 1st Int. Meeting on Applied Physics, Badajoz, October 2003, p.826 
46. J. Mrázek, V. Matějec, I. Kašík, D. Berková : “Preparation of doped hydrophobic layers on optical fibers”, Romphyschem 11, Timisoara, September 2003, poster 
47. J. Mrázek, V. Matějec, M. Hayer, I. Kašík, D. Berková : „Application of the sol-gel method at the fabrication of microstructure fibers“, Proc. XIIth Int. Workshop on Sol-Gel Science and Technology, Sydney, August 2003, p.713 
48. V. Matějec, J. Mrázek, J. Skokánková, M. Chomát, I. Kašík : “Optical properties and sensitivity of xerogel layers for fiber-optic hydrocarbon sensors”, Proc. XIIth Int. Workshop on Sol-Gel Science and Technology, Sydney, August 2003, oral O56 
49. J. Mrázek, V. Matějec, I. Kašík : „Sol-gel preparation and characterization of xerogel detection parts of fiber-optic chemical sensors“, Proc. Študentská vedecká konferencia, Bratislava, April 2003, p.248 
50. V. Matějec, M. Chomát, D. Berková, J. Mrázek : “Detection of hydrocarbons dissolved in water by using PCS fibers excited by an inclined collimated beam”, Proc. Europtrode VI, Manchester, April 2002, p.197