2014

Laser-induced marking in glasses and polymers doped bylight-absorbing microinclusions and nanocrystals［１］Organization（10.5 points）
Project Leader：
Kateryna Zelenska, Ph.D. (Faculty ofPhysics, Taras Shevchenko National Universityof Kyiv, Ukraine)
Representative at RIE：
Toru Aoki, Ph.D., Prof. (ResearchInstitute of Electronics, Shizuoka University,Japan)
Participants：
Serge Zelensky, Dr., Professor (Facultyof Physics, Taras Shevchenko National
University of Kyiv, Ukraine)
Volodymyr Gnatyuk, Ph.D., Assoc. Prof.
(V. E. Lashkaryov Institute of Semiconductor
Physics of the National Academy of Sciences ofUkraine, Ukraine)
Maxim
Sychov,Dr.,
Professor(Saint-Petersburg State Technological Institute(Technical University))
Sergey Gagarsky, Ph.D., Senior
Scientist (Saint-Petersburg National Research
UniversityofInformation
Technologies,Mechanics and Optics)［２］Research Progress（10.5 points）
The project research was dedicated to thelaser-induced marking in glasses and polymers
doped by light-absorbing microinclusions andnanocrystals. Absorption, photoluminescence
spectra and XAS of the obtained glass samples
with different additives were studied.
During Dr. K. Zelenska’s, Dr. V. Gnatyuk’s andProf. T. Aoki’s visit to Thailand in June 2017 andProf. T. Aoki’s visit to Ukraine in August 2017, aplan of research was discussed in details.
Dr. K. Zelenska, Dr. V. Gnatyuk and Prof. T. Aoki
attended the The 13th International Conference
on Correlation Optics “Correlation Optics’17” inChernivtsi, Ukraine, 11-15 September 2017, andthe 16th International Conference on Global
Research and Education, Inter-Academia 2017
(iA-2017) in Iasi, Romania, 25-28 September 2017,
where they presented scientific results anddiscussed further research plan.
The participants of the project were involved inorganizing of the 18th Intern. Young Scientists
Conf. “Optics & High Technology MaterialScience” SPO 2017 which was held at the Facultyof Physics, Taras Shevchenko National
University of Kyiv, 26-29 October 2017.
［３］Results（10.5 points）(３－１) Research results
CuCl nanocrystal additives in fluorophosphateglass enhance the absorption of samples in theultraviolet spectrum region. Moreover, CuClnanocrystals can be a source of blue-green
luminescence and two-photon absorption.
Samples of glass doped with CuCl nanocrystals
were darkened on the exposure to mercury-vapor
lamp UV radiation for 6 hours (Fig. 1).
(a)(b)

Fig. 1. Photo of the fluorophosphate glass sample
doped with CuCl nanocrystals after the exposure
to UV radiation for 6 hours employing amercury-vapor lamp.
Theaverage
CuK-edge
absorption
coefficient μ(E)for
Cufoiland
thefluorophosphate glass sample doped with CuClnanocrystals before and after UV lamp exposureis shown in Fig. 2.

Fig. 2. XAS characterization of Cu K-edge for Cu foil and a fluorophosphate glass sample doped with CuClnanocrystals before and after UV lamp exposure.
Leucoxene TiO2.
Photoluminescence spectra of the glass samples
without additives (blank), activated by indium(In), carbon nanotubes (MWCNT) and copperoxide (CuO) were excited by a nitrogen laser witha radiation wavelength of 337 nm and shown inFig. 4.

Fig. 3. Photoluminescence
spectraofa
fluorophosphate glass sample doped with CuClnanocrystals before and after UV lamp exposure.
No changes in the photoluminescence spectra of afluorophosphate glass sample doped with CuClnanocrystals before and after UV lamp exposure
were observed (Fig. 3).
Silicate glass with special components (48.37
SiO2 : 6 CaO : 10K2O : 25 Na2O : 2.5 Al2O3 : 7.5
B2O3 : 0.05 Sb2O3 : 0.5 SnO : 0.05 SeO2) wereprepared with various nanoparticle additives:carbon black, MWCNT, N-RGO, RGO O2, In,GZO 1%, GZO 2%, CuO, ZnO, Zn2SnO4, TiO2,Hydro Ilmenite TiO2, Magnetic Leucoxene TiO2,Fig. 4. Photoluminescence spectra of the glass
samples: without additives (blank), activated byindium (In), carbon nanotubes (MWCNT) andcopper oxide (CuO).
Laser-induced marks were obtained inpolystyrene- particle composites under irradiation
with 1 (Fig. 5, 1), 3 (Fig. 5, 2), 5 (Fig. 5, 3), 7 (Fig. 5,4), 10 (Fig. 5, 5), 15 (Fig. 5, 6) and 20 (Fig. 5, 7)
laser pulses of YAG:Nd laser with power densityof F (a) and 2F (b). Tha observed mark formation
can be attributed to pyrolysis of polymer matrix
in vicinity of heated carbon particle up totemperatures of a few thousand Kelvin.
(a)1132243765456(b)Fig. 5. Photo of laser-induced marks inpolystyrene-particle composites under irradiation
with 1 (1), 3 (2), 5 (3), 7 (4), 10 (5), 15 (6) and 20 (7)laser pulses of YAG:Nd laser with power densityof F (a) and 2F (b).
(３－２) Ripple effects and further developments
Obtained results open an opportunity to analyze
in details chemical composition of the sample andpossibilities of optical recording. A huge amount ofthe prepared samples will be studied employing
another optical methods and treatments.
［４］Achievements (List of Publications)（10.5points）（１）V. A. Gnatyuk, Laser-induced creation ofparameterized marks in transparent materials
for information recording and image formation,
The International Workshop on Glass & Optical
Materials and Application. (28 June 2017,
Nakhon Pathom Rajabhat University, Nakhon
Pathom, Thailand). (Invited lecture).
（２）V. A. Gnatyuk, Information recording andimage
formationwithlaser-induced
parameterized marks, The Seminar at College ofNanotechnology, KMITL. (24 August 2017,
College of Nanotechnology, King Mongkut’s
Institute of Technology Ladkrabang, Bangkok,Thailand). (Invited lecture).
（3）V. Gnatyuk, K. Zelenska, T. Aoki, Doping
and metallization of the CdTe crystal surface bylaser irradiation of the metal substrate throughthe semiconductor, The conference on Hard X-Ray,
Gamma-Ray, and Neutron Detector Physics XIX(Conference 10392), Part of 2017 SPIE Optics +Photonics: Optical Engineering + Applications,Technical Program, 2017, Abstract No 10392-46,
161 (San Diego, CA, USA, 6-10 August 2017).
（4）K. Zelenska, S. Zelensky, A. Kopyshinsky, T.
Aoki, Laser-induced incandescence of rough andporous carbon superficial layers, The 13th
International Conference on Correlation Optics“Correlation Optics’17”, Book of Abstracts, 2017,
M35 (Chernivtsi, Ukraine, 11-15 September2017).
（5）K. Zelenska, V. Sklyarchuk, V. Gnatyuk, T.
Aoki, Spectroscopic studies of Ni/CdTe/Au
Schottky diode X- and γ -ray detectors, The 16th
International Conference on Global Research andEducation, Inter-Academia 2017 (iA-2017), Bookof Abstracts, 2017, Abstract No O.06, 16 (Iasi,Romania, 25-28 September 2017).
（6）V. Gnatyuk, K. Zelenska, V. Sklyarchuk, T.
Aoki, Enhanced X/γ-ray detection efficiency in
CdTe-based Schottky diode detectors operated ina stacked mode, The 24th International
Workshop on Room-Temperature SemiconductorDetectors (RTSD 2017), 2017 IEEE Nuclear
Science Symposium & Medical Imaging
Conference (2017 NSS/MIC), Abstract No R-07-23(Atlanta, USA, 21-28 October 2017).
（7）J. Nishizawa, V. Gnatyuk, K. Zelenska, A.
Koike, T. Aoki, Doping of CdTe by Indium orAluminum with Nd:YAG laser, The 24thInternational Workshop on Room-Temperature
Semiconductor Detectors (RTSD 2017), 2017
IEEE Nuclear Science Symposium & MedicalImaging Conference (2017 NSS/MIC), Abstract
No R-07-11 (Atlanta, USA, 21-28 October 2017).
（8）K. Zelenska, V. Karpovych, S. Yablochkov, A.
Kopyshinsky, S. Zelensky, T. Aoki, Application ofLaser-Induced Incandescence in Studies ofSurface of Porous Carbon, The First Materials
Research Society of Thailand International
Conference (1st MRS Thailand International
Conference), Abstract book, Abstract No S15_P48,
15_76, 2017 (Chiang Mai, Thailand, 31 October –3 November 2017).
（9）V. Karpovych, K. Zelenska, S. Yablochkov, S.
Zelensky, T. Aoki, Evolution of Laser-Induced
Incandescence of Porous Carbon Materials under
Irradiation by a Sequence of Laser Pulses, Thai
Journal of Nanoscience and Nanotechnology, inpress.

（ 10 ） V.A. Gnatyuk, K.S. Zelenska, V.M.
Sklyarchuk, T. Aoki, Enhanced X/γ-Ray Detection
Efficiency in CdTe-based Schottky DiodeDetectors Operated in a Stacked Mode, 2017
IEEE Nuclear Science Symposium and Medical
Imaging
Conference
Record(NSS/MIC),

submitted.
（11）V. Gnatyuk, V. Sklyarchuk, K. Zelenska, T.
Aoki, Spectroscopic studies of Ni/CdTe/AuSchottky diode X/γ-ray detectors, Physica Status
Solidi A, submitted.

Travelling Report（Mention each travel by CRP budget.）Name：Kateryna Zelenska
Affiliation：Taras Shevchenko National University of Kyiv, 60 Volodymyrska Street, Kyiv, 01033,
UkrainePeriod of time：23 October - 26 November 2017
Destination：Research Institute of Electronics, Shizuoka University
Purpose：(1) Study of the optical properties of various glass samples with different additives and laser
technological approaches suitable for volumetric optical recording and image formation by creation ofmicromarks in the bulk of different materials. (2) Participation in scientific meetings at Research Institute ofElectronics, Shizuoka University during the period of stay.
Name of receiver：Prof. Toru Aoki