Nilgun (Dogan) Baydogan

Nilgun (Dogan) Baydogan
Istanbul Technical University · Energy Institute

Prof. Dr.
https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=8071

About

143
Publications
26,141
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462
Citations
Introduction
N Baydogan is a Prof. Dr at Istanbul Technical University, Energy Institute, Nuclear Researches Division, Istanbul, Turkey. She studied physics in Istanbul University, Turkey. She received MSc. and PhD. from Istanbul Technical University, Nuclear Energy Institute. Her research is at the interface where ionizing radiation and materials meet: radiation source, nanomaterial, polymer nanocomposites, thin film deposition. She is best known for work on the applications of nuclear techniques.
Additional affiliations
April 2015 - present
Istanbul Technical University
Position
  • Prof.Dr.
March 2014 - present
Istanbul Technical University, Energy Institute, Istanbul, Turkey
Position
  • Professor (Full)
Description
  • https://tez.yok.gov.tr/UlusalTezMerkezi/tezSorguSonucYeni.jsp Nilgün Baydoğan (thesis advisor) Nilgün Doğan Baydoğan (thesis advisor)
Education
October 2011 - October 2011
Turkish Atomic Energy Authority-TAEK,
Field of study
  • Radiation Protection in Industrial Radiography Certificate: 7/10/2011
March 2006 - March 2006
Turkish Atomic Energy Authority-TAEK
Field of study
  • Radiography Nondectructive Testing - Mart 2006
March 2006 - March 2006
Turkish Atomic Energy Authority-TAEK,
Field of study
  • Radiation Protection in Industrial Radiography Certificate: 21/3/2006

Publications

Publications (143)
Chapter
Full-text available
This work aims some challenges in the manufacturing of flexible substrates which will be used in solar cells as a substrate. Poly(imide siloxane) block copolymers were produced with the same bis(aminopropyl) polydimethylsiloxane (APPS). The polyimide hard blocks were composed by using 4,4′­oxydianiline (ODA) and benzofenon­3,3,4,4­tetrakarboksilik...
Chapter
Full-text available
Self-healing materials increases the reliability and life-span of the overall systems that they are incorporated to. This capacity of the material enhances the credibility of the in-flight health assessment in aerospace platforms. Such platforms do not require visual or acoustic inspections to recover from the damages occur during flight. This redu...
Article
Full-text available
Poly (methacrylate) (PMMA) shows several advantageous properties such as exceptional optical clarity, high strength, superior dimensional stability and modest wettability. PMMA is derived by living polymerization with Atom Transfer Radical Polymerization (ATRP) method. The samples were cured at two different environments such as air and argon. The...
Article
Full-text available
Al-doped n-ZnO/p-Si heterojunctions were fabricated using a sol–gel dip coating technique at 700 °C, in a nitrogen ambient. The structural, optical, and electrical properties of ZnO:Al thin films, and the heterojunction properties of ZnO:Al/p-Si were investigated with respect to the effects of Al doping concentration. Hexagonal nano-structured ZnO:...
Article
Al-doped, zinc oxide (ZnO:Al) films with a 1.2 at.% Al concentration were deposited on p-type silicon wafers using a sol–gel dip coating technique to produce a ZnO:Al/p-Si heterojunction. Following deposition and sub-sequent drying processes, the films were annealed in vacuum at five different temperatures between 550 and 900 °C for 1 h. The resist...
Article
Full-text available
3D printing technology is a futuristic technology to print lithium-ion batteries and other energy storage devices to fulfill the manufacturing demand of industries. The process is fast, accurate, and versatile. This perspective sheds light on the future of 3D battery printing technology concerning materials and process challenges with possible solu...
Article
Full-text available
Compared to the state-of-art lithium-ion batteries, the all-solid-state batteries offer improved safety along with high energy and power density. Although considerable research has been conducted, the inherent problems arising from solid electrolytes and the lack of suitable electrolytes hinder their development in practical applications. Furthermo...
Article
Full-text available
Turkish Journal of Nuclear Science, (2022), Vol. 34, No.1. Page: 1-15 http://dergipark.gov.tr/tjins The astrophysical S-factor for the 11 B(p, α)2α reaction has been evaluated at effective center of mass (CM) energies of 110, 113, 115, 117, 119, 121, 124, 126, 128, 131, and 133 keV. It was observed that there was a significant difference between th...
Presentation
Full-text available
For effective projection of final property of materials, soft metrology offers a new way - simple and readily available process descriptors to forming direct quantitative relationship between process and final properties of materials. Descriptors in traditional metrology are hard to control and acquisition. However, process descriptors are very ea...
Article
The poly (imide siloxane) block copolymer were synthesized at different forms with resistance to dissolve in several corrosive environments. The optimum gamma shielding of the poly (imide siloxane) block copolymer was obtained with the comparison of flexible sheet and pelletized forms to be tolerant at harsh environment. The comparison in the impro...
Article
Graphene nanoplatelets (GNPs) was used as a nanofiller in Poly(methyl methacrylate) (PMMA) synthesized by the Atom Transfer Radical Polymerization (ATRP) method. The first step in the synthesis of the PMMA/GNPs was the dispersion of GNPs in the PMMA liquid monomers by combining the solutions so that GNPs had superior mechanical properties, thermal...
Article
ZnO nanowires were grown on a ZnO:Al polycrystalline surface by using a hydrothermal growth technique. Details about the effects of the hydrothermal solution parameters (such as the curing time, curing temperature and solution molarity) and the physical properties of the solution (such as the structural characterization, surface morphology and opti...
Article
Graphene nanoplatelets (GNPs) was used as a nanofiller in Poly(methyl methacrylate) (PMMA) synthesized by the Atom Transfer Radical Polymerization (ATRP) method. The first step in the synthesis of the PMMA/GNPs was the dispersion of GNPs in the PMMA liquid monomers by combining the solutions so that GNPs had superior mechanical properties, thermal...
Article
Poly (methyl methacrylate) modification by colemanite (CMT) addition has ensured beta shielding improvement. This study has connected with space environmental utilization with Kibo Japanese Experiment Module on International Space Station at low earth orbit. Space environment experiment was performed by using Kibo Experiment Handrail Attachment Mec...
Article
This research aimed to assess the effect of various nitride additives, i.e., AlN, hexagonal BN, Si3N4, TiN, and ZrN, on the sinterability, microstructure, and mechanical-physical characteristics of TiC-based materials. All ceramics were sintered at the same sintering conditions using the spark plasma sintering (SPS) process. A relative density over...
Article
The detection of the refractive error is important for the utilization of the optical lens in eye diseases and the determination of the refractive properties is a key parameter at optical sensor systems. Refraction detection is one of the procedures performed by ophthalmologists, and the detection of this feature in the lens of the eye is one of...
Article
The graphene nanofiller (2 wt%) was dispersed in poly(methyl methacrylate) by in situ polymerization method. The optimum high frequency (microwave) absorption was evaluated at X‐band due to changes in the scattering parameters (determined by using a vector network analyzer). The slight improvement has been attained in gamma attenuation coefficient...
Article
The explanation of the nature of colour has critical importance in ophthalmology and optometry. Colour is one of the most distinguishing characteristics of people vision. In order to understand how colour affects our vision, it will be significant to understand how colour develops. Because the vision sensitivity problems of optical materials used i...
Article
The technique for synthesis of poly (methyl methacrylate) (PMMA) by atom transfer radical polymerization has been strengthened by using graphene nanoplatelets (GNPs) to enhance the elastic properties of the polymer. In order to improve practical, economical and mechanical performance, the requirements for effective implementation of production cont...
Article
CuIn1-xGaxSe2 (CIGS) thin-film has been fabricated as the flexible thin-film for the application at the building-integrated photovoltaics. This paper introduces the CIGS fabrication method by the sol-gel process to obtain lowcost electricity current. This study is focused on the examinations on the key issue and the main problems in the industriali...
Article
Full-text available
The modified polymer composites can be included as the substrate for the utiliza-tion at the photovoltaic-thermal collectors to generate solar electricity and heat insolar energy systems. Poly (methyl methacrylate) seems a suitable thermoplasticpolymer due to high strength, high heat and abrasion resistance, and good mechan-ical properties. Chemica...
Article
Full-text available
CuIn1−xGaxSe2 (CIGS) thin-film has examined as an absorber layer for the solar cells because of the suitable absorption value, stability and economic in manufacture. CIGS thin films belong to the I-III-VI2 group of the periodic table with the appropriate direct bandgap (1.5 eV). In this study, the CIGS thin films were annealed at ∼200°C for four di...
Article
Pure and Aluminum doped zinc oxide (Al:ZnO) film samples were deposited by the sol-gel dip-coating technique for understand influence of Al concentration on the films crystallization, electrical conductivity and optical transparency. Surface morphology of the film with hexagonal wurtize crystalline structure and high c-axis orientation (in XRD anal...
Article
Full-text available
The novel research on organic polymer chemistry and physical organic chemistry involve poly(imide) siloxane on advanced and emerging technologies in radiation therapy. The poly(imide siloxane) block copolymers were synthesized at different production conditions for the use of biodegradable and biocompatible materials to use at biomedical products....
Article
ZnO nanowire arrays were fabricated by hydrothermal growth on Al-doped ZnO (ZnO:Al) seed layers coated on soda-lime silicate glass by sol–gel coating. The properties of the ZnO:Al seed layer were evaluated to obtain ZnO nanowires with the optimal size and length and to realize suitable adhesion of the ZnO:Al grains to the substrate. The optimal mec...
Article
Full-text available
https://dergipark.org.tr/tr/pub/jiet/issue/51030/648289 Journal of Investigations on Engineering and Technology PMMA blends were synthesized through atom transfer radical polymerization (ATRP) method under at different concentration ratios. The viscosity characteristics of the structure were investigated to determine the behaviour of macromolecules...
Conference Paper
Determination of the intrinsic viscosity and molecular weight of Poly (methyl methacrylate) blends
Patent
The invention allows satellites, high-altitude aerial vehicles and platforms, reusable low-trajectory vehicles and shuttles, floating vehicles, submarines, nuclear power vehicles, high-energy particle detectors and nuclear waste robot technology, which can work in harsh conditions by coating, allowing the operation in harsh conditions a method.
Patent
The invention relates to poly (imide siloxane) block copolymer produced from BTDA (Benzophenone-3,3 ', 4,4'-tetracarboxylic dianhydride) monomer for use in radiation shielding.
Article
Full-text available
ZnO doped with Al (ZnO: Al) film presents considerable concern as the optical transparent and electrical conducting electrodes. Al: ZnO thin film is electrically conductive when doped with aluminium. Aluminium is the suitable doping element to improve optoelectronic properties at Al:ZnO thin films at human body [1]. The refractive index is an impor...
Article
Soda glasses have been exposed by different type of radiation sources, but approximately in the same doses. Then the colors of the glasses have turned into dark hues. The glass samples have been irradiated in two different places of ITU TRIGA Mark II Reactor. The first place is central thimble, and the second place is tangential beam tube of the re...
Article
To give the PMMA polymer self-repairing properties microspheres (MK) were added into the polymer solution at three different concentrations (1, 3, 5% Wt.). Formaldehyd resin-walled MKs are manufactured with Glycidyl Methacrylate (GMA), which is used as self-healing agent. For ease of production, 1% wt. were added to PMMA solution for produce PMMA /...
Article
Full-text available
Cu(In, Ga)Se2 thin-film samples were derived at different pH-values changing from 1 to 4 via sol–gel dip coating technique to obtain cost-effective polycrystalline thin film after annealing at 150 °C in air. The structural characterization and the physical properties (such as optical and electrical properties) were investigated for different pH-val...
Article
This paper presents a study of Al-doped ZnO films deposited at room temperature by a cost-effective sol-gel dip coating technique. The influence of Al concentration on crystallinity, electrical and optical properties of films annealed in nitrogen and oxygen atmosphere has been studied. The resistivity has been decreased from 1.1-1.6 x 10-4 Ω.cm t...
Article
Full-text available
ZrO2 thin film samples were produced by the sol-gel dip coating method. Four different absorbed dose levels (such as ~ 0.4, 0.7, 1.2 and 2.7 Gray-Gy) were applied to ZrO2 thin films. Hence, the absorbed dose of ZrO2 thin film was examined as physical dose quantity representing the mean energy imparted to the thin film per unit mass by gamma radiati...
Conference Paper
Full-text available
Poly(imide siloxane) block copolymers with the same polydimethylsiloxane (APPS) were prepared. 4,4’-oxydianiline (ODA) and benzophenone-3,3,4,4-tetracarboxylic acid (BTDA) composed the polyimide hard block. APPS and BTDA composed the polysiloxane soft block. The length of the polysiloxane soft block increased by increasing the length of the polyimi...
Article
Poly(imide) siloxane encourages new research studies that offer innovative and comprehensive industrial areas, experimental approaches and their innovative products. Poly(imide) siloxane covers the studies in fundamental organic polymer chemistry and physical organic chemistry, noval researches on membranes and interfaces. The possible applications...
Article
Full-text available
Beta and neutron attenuations of poly(imide siloxane) block copolymers were compared to evaluate radiation penetrations into flexible sheet (BI) and pellet form BII grains. The modification of BII polymer has improved its radiation shielding properties of poly(imide siloxane) block copolymer as the result of the pelletization. The linear attenuatio...
Conference Paper
Poly(imide siloxane) block copolymers with the same polydimethylsiloxane (APPS) were prepared. 4,4’-oxydianiline (ODA) and benzophenone-3,3,4,4-tetracarboxylic dianhydride (BTDA) composed the polyimide hard block. APPS and BTDA composed the polysiloxane soft block. The length of the polysiloxane soft block increased by increasing the length of the...
Article
Full-text available
Poly(methyl methacrylate) PMMA was prepared by using Atom Transfer Radical Polymerization technique. The production of PMMA as thermoplastic polymer was executed as an effective way by using the living polymerization technique. The changes in magnetisation properties of PMMA were determined with the rise of the polymerisation temperature from 45 °C...
Article
Aluminum doped zinc oxide (ZnO:Al) thin films via 1.2 at. % Al content was deposited on p-type silicon wafers by using sol-gel dip coating technique to compare the effect of post treatment ambient on electrical characteristics of ZnO:Al/p-Si heterojunction. The annealing environment treatment was performed at 700 °C for 60 min under various gas amb...
Article
ZrO2 thin film samples were produced by the sol-gel dip coating method. Four different absorbed dose levels (such as ~ 0.4, 0.7, 1.2 and 2.7 Gray-Gy) were applied to ZrO2 thin films. Hence the absorbed dose of ZrO2 thin film was examined as physical dose quantity representing the mean energy imparted to the thin film per unit mass by gamma radiatio...
Article
Full-text available
ZrO2 thin film samples were produced by the sol-gel dip coating method. Four different absorbed dose levels (such as ~ 0.4, 0.7, 1.2 and 2.7 Gray-Gy) were applied to ZrO2 thin films. Hence the absorbed dose of ZrO2 thin film was examined as physical dose quantity representing the mean energy imparted to the thin film per unit mass by gamma radiatio...
Article
Poly(methyl methacrylate) (PMMA) was reinforced by using colemanite Ca2B6O11·5H2O (CMT) to increase the radiation shielding capacity of the polymer composite. CMT reinforcement effect was examined at four different CMT concentration levels (such as 5, 15, 30 and 40 wt. %) to investigate radiation protective shielding properties of PMMA/CMT composit...
Book
Polymer and Nanocomposites Syposium was supported by TÜBİTAK 1001 Project with No- 115R017, Multi-Scale Self-Healing Nanocomposite Shielding Material (Kendini Çok Yönlü Onarabilen Nanokompozit Geliştirilmesi ve Zırh Malzemesi Olarak Mekanik Davranışlarının İncelenmesi) and it was held in Istanbul Technical University, Energy Institute and ARI 6 Sem...
Conference Paper
The use of Cu2ZnSnS4 thin films deposıted by dip coating technique application was evaluated for solar cells containing polymer substrates in this study. Hence, this work deals with the elaboration and characterization of Cu2ZnSnS4 thin films (CZTS) by a simple and economical technique using chemical processes. In this research, the CZTS thin films...
Article
The modification of PMMA materials was provided by the application of a suitable degass process to obtain the porous structure. The application of a suitable degass process has enhanced the affordable weight reduction. The gamma transmission technique was used in order to examine the details on high precision processing and fabrication of the modif...
Conference Paper
Full-text available
CuIn1−xGaxSe2 (CIGS) thin film have examined as an absorber layer for the solar cells because of the suitable absorption value, stability and economic in manufacture. CIGS thin films belong to I-III-VI2 group of the periodic table with the appropriate direct band gap. In this study, the CIGS thin films were annealed at 200°C for four different ann...
Article
Full-text available
Well crystallized copper indium gallium (di) selenide-Cu(In, Ga) Se-2 (CIGS) thin films were deposited on conducting substrates (molybdenum coated soda-lime glass) by sol-gel dip coating technique. The n-type cadmium sulfide (CdS) buffer layer was produced by chemical bath deposition (CBD) technique and the n-type ZnO: Al thin film has been used as...
Conference Paper
Full-text available
High-temperature resistant block copolymers were synthesized by using 3,4,3',4'-Biphenyl tetracarboxylic dianhydride (BPDA), 4,4'-Oxydianiline (ODA) and Polydimethylsiloxane, bis(3-aminopropyl) (APPS). BPDA and APPS composed the soft block of the copolymer. The length of polysiloxane soft blocks increased by increasing the length of the polyimide h...
Conference Paper
Full-text available
Elimination of the methylene orange which are the main sources of environmental pollution from aqueous media were investigated experimentally by using 0.45 µm hydrophilic nylon membran. Removal of the methylene orange were performed with successfully. Furthermore, repetition effect also was examined rationally. With this study, membrane usage for e...
Conference Paper
This study gives some information about the preparation of Glycidyl Methacrylate (GMA) microcapsules with Melamine Formaldehyde (MF) resin as a shell material (MF-GMA). Melamine formaldehyde resin containing hydroxyl groups was synthesized in the first step. Second step includes the addition of GMA monomer along with Sodium Dodecyl Benzenesulfonate...
Article
Copper indium gallium (di) selenide-Cu(In, Ga)Se2 (CIGS) thin films were fabricated on soda-lime silicate glass substrates using a layer-by-layer sol-gel dip-coating method. The irradiation procedure was handled using a certified Co-60 radioisotope at two different absorbed dose levels (at 0,03 and 0,05 Gray (Gy)) to examine the enhancements of opt...
Article
Full-text available
The study was carried out to determine radioactivity concentrations in surface soil samples of the city of Edirne in connection with the potential radiological hazards due to the Chernobyl event. The natural radionuclide ((226)Ra, (232)Th and (40)K) contents were determined for nine different locations in nine different towns of the Edirne city. Ra...
Poster
Full-text available
The Copper indium gallium (di)selenide-Cu(In,Ga)Se2 thin films were prepared by sol–gel dip coating technique followed by preheating at 300°C in air to oxidize the films on soda lime silicate glass (SLSG) coated Mo. The n-type buffer layer cadmium sulfide (CdS) was coated by chemical bath deposition (CBD) and the n-type ZnO:Al thin film was deposit...
Conference Paper
In this study, zirconium oxide (ZrO2) thin film samples prepared by sol–gel method were irradiated using Co-60 radioisotope as gamma source. Then, it was investigated the ionizing effect on optical properties of ZrO2thin film samples with the rise of the absorbed dose. The changes in the optical absorbance of ZrO2thin films were determined by using...
Conference Paper
Full-text available
The prepared poly(imide)siloxane-PIS copolymers possess the properties of thermal plastic elastomers. These materials have potential usage in microelectronics devices, in medical devices, in aerospace applications, and the most important usage area in solar cells as flexible substrates. Poly(imide siloxane) and poly(amide siloxane) copolymers with...
Book
Poly(imide siloxane) block copolymers with the same polydimethlysiloxane(APPS) were prepared by using 4,4'-oxydianiline (ODA) and Benzofenon-3,3,4,4-tetrakarboksilik dianhydride(BTDA) to compose the polyimide hard block. APPS and BTDA composed the polysiloxane soft block. The length of polysiloxane soft blocks increased with increasing the length o...
Presentation
Full-text available
A general view on promising new approaches and applications of carbon nanotube aerogels
Conference Paper
Full-text available
Since their discovery about two decades ago, carbon nanotubes (CNTs) are known as one of the most promising carbon allotropes with extraordinary diverse physicochemical properties. In order to create practical – commercial applications, assembling of individual CNT structures into macroscopic functional and high-performance materials is so importan...
Book
Cu(In,Ga)Se2 (CIGS) thin films were obtained by solgel method on soda-lime glass substrates, economically. The optimum optical properties of CIGS thin films are obtained by varying the film layers. Besides, the solgel-derived CIGS thin films were thermally treated at different temperatures from 135 °C up to 200 °C. These results indicate that the t...
Presentation
Full-text available
Silica thin film produced by using sol-gel method and the effects of surfactant on thin film properties examined.
Presentation
Full-text available
Investigation of effects of different surfactants on surface properties of silica aerogels
Article
Full-text available
This study was aimed to determine kinetic and thermodynamic behaviors of selenium on modified bentonite and activated carbon. Thermodynamic parameters such as enthalpy Delta H, free energy change Delta G and entropy change Delta S of selenium adsorption suggested that the adsorption of Se(IV) on activated carbon and organic-inorganic modified bento...