TY  - CONF
AU  - Mitrović, Aleksandra
AU  - Stamenković, Dragomir
AU  - Popović, Dejana
AU  - Dragićević, Aleksandra
PY  - 2020
UR  - http://rfasper.fasper.bg.ac.rs/handle/123456789/1296
AB  - Hydrogels have peculiar physical and chemical properties and therefore, are used in a variety of biomedical applications including drug delivery agents, prosthetic devices, the repair and replacement of soft tissues, contact lenses, etc. Consequently, investigation of mechanical, physical and chemical properties is crucial in biomedical application of hydrogels. Poly (2-hydroxyethyl methacrylate) (pHEMA), as a biocompatible hydrogel, was first hydrogel used for making soft contact lenses. Many researches have been modified pHEMA with the aim of improving its properties. Application of nanotechnology is one of the possible solutions for improving the characteristics of this biocompatible hydrogel. In this paper, polyhydroxyethyl methacrylate was used as standard material for soft contact lenses (SL 38). This material was incorporated with fullerene C-60 (SL38-A), fullerol C-60(OH)(24) (SL 38-B) and fullerene metformin hydroxylate C-60(OH)(12)(OC4N5H10)(12) (SL 38-C), respectively. Three new nanophotonic soft contact lenses were made. The main goal of this research was to develop appropriate process parameters for soft contact lens micro-turning. Also, studying the thermal decomposition of standard soft contact lens, pHEMA, as well as three new nanophotonic soft contact lenses was one of the main objectives. Results have shown that manufacturing process of nanofotonic soft contact lens is considered to be a micro-turning process regarding the cutting depth and tool nose ratio. Thermal stability of all three nanofotonic soft contact lenses was significantly improved comparing to the standard soft contact lens. Still, further research needs to be done so these nonophotonic soft contact lenses could find practical application in the field of biomedical engineering.
PB  - Springer International Publishing Ag, Cham
C3  - Computational and Experimental Approaches in Materials Science and Engineering, CNNTECH 2019
T1  - Manufacturing Process and Thermal Stability of Nanophotonic Soft Contact Lenses
EP  - 199
SP  - 184
VL  - 90
DO  - 10.1007/978-3-030-30853-7_11
ER  - 

@conference{
author = "Mitrović, Aleksandra and Stamenković, Dragomir and Popović, Dejana and Dragićević, Aleksandra",
year = "2020",
abstract = "Hydrogels have peculiar physical and chemical properties and therefore, are used in a variety of biomedical applications including drug delivery agents, prosthetic devices, the repair and replacement of soft tissues, contact lenses, etc. Consequently, investigation of mechanical, physical and chemical properties is crucial in biomedical application of hydrogels. Poly (2-hydroxyethyl methacrylate) (pHEMA), as a biocompatible hydrogel, was first hydrogel used for making soft contact lenses. Many researches have been modified pHEMA with the aim of improving its properties. Application of nanotechnology is one of the possible solutions for improving the characteristics of this biocompatible hydrogel. In this paper, polyhydroxyethyl methacrylate was used as standard material for soft contact lenses (SL 38). This material was incorporated with fullerene C-60 (SL38-A), fullerol C-60(OH)(24) (SL 38-B) and fullerene metformin hydroxylate C-60(OH)(12)(OC4N5H10)(12) (SL 38-C), respectively. Three new nanophotonic soft contact lenses were made. The main goal of this research was to develop appropriate process parameters for soft contact lens micro-turning. Also, studying the thermal decomposition of standard soft contact lens, pHEMA, as well as three new nanophotonic soft contact lenses was one of the main objectives. Results have shown that manufacturing process of nanofotonic soft contact lens is considered to be a micro-turning process regarding the cutting depth and tool nose ratio. Thermal stability of all three nanofotonic soft contact lenses was significantly improved comparing to the standard soft contact lens. Still, further research needs to be done so these nonophotonic soft contact lenses could find practical application in the field of biomedical engineering.",
publisher = "Springer International Publishing Ag, Cham",
journal = "Computational and Experimental Approaches in Materials Science and Engineering, CNNTECH 2019",
title = "Manufacturing Process and Thermal Stability of Nanophotonic Soft Contact Lenses",
pages = "199-184",
volume = "90",
doi = "10.1007/978-3-030-30853-7_11"
}

Mitrović, A., Stamenković, D., Popović, D.,& Dragićević, A.. (2020). Manufacturing Process and Thermal Stability of Nanophotonic Soft Contact Lenses. in Computational and Experimental Approaches in Materials Science and Engineering, CNNTECH 2019
Springer International Publishing Ag, Cham., 90, 184-199.
https://doi.org/10.1007/978-3-030-30853-7_11

Mitrović A, Stamenković D, Popović D, Dragićević A. Manufacturing Process and Thermal Stability of Nanophotonic Soft Contact Lenses. in Computational and Experimental Approaches in Materials Science and Engineering, CNNTECH 2019. 2020;90:184-199.
doi:10.1007/978-3-030-30853-7_11 .

Mitrović, Aleksandra, Stamenković, Dragomir, Popović, Dejana, Dragićević, Aleksandra, "Manufacturing Process and Thermal Stability of Nanophotonic Soft Contact Lenses" in Computational and Experimental Approaches in Materials Science and Engineering, CNNTECH 2019, 90 (2020):184-199,
https://doi.org/10.1007/978-3-030-30853-7_11 . .

TY  - JOUR
AU  - Mitrović, Aleksandra
AU  - Bojović, Božica
AU  - Stamenković, Dragomir
AU  - Popović, Dejana
PY  - 2018
UR  - http://rfasper.fasper.bg.ac.rs/handle/123456789/2910
AB  - The aim of this study was to develop new soft contact lens (SCL) materials which would,
after recommended and existing machining processes, improve surface roughness.
Nanomaterials (fullerene, fullerol and methformin hydroxylate fullerene) were
incorporated into commercial material for SCL (SL38) based on PHEMA, which were
derived by the technology in the production lab of the company Soleko (Milan, Italy).
Nanophotonic SCLs (SL38-A, SL38-B, SL38-C, respectively) were produced in the company
Optix (Belgrade, Serbia) from the obtained materials. For the surface characterization of
SCLs, AFM analysis and lacunarity method were performed. The results showed that for
the SL38-B average roughness value is lower than those of SL38-A and SL38. The
topography parameters of SL38-C were between the parameters of SL38-A and SL38-B.
Lacunarity analysis of AFM images confirmed that SCLs surface state should belong to
either group of adequate (slanted p-diagram) or inadequate (contorted p-diagram)
roughness concerning tear film stability. Nanophotonic SCL SL38-C exibits more acceptable
performance considering SCL surface functional behavior as compared to other SCLs. The
positive result of incorporating nanomaterials into basic material for SCL is better quality
of the nanophotonic SCLs surfaces. On the bases of these experiments, the assumption
that incorporation of fullerene derivate will not increase surface roughness parameters is
confirmed.
AB  - U ovom radu predstavljeni su novi materijali za meka kontaktna sočiva
(MKS), koja bi nakon preporučene mašinske obrade imala poboljšana
svojstva hrapavosti površine. Nanomaterijali (fuleren, fulerol i metformin
hidroksilata fulerena) su inkorporirani u bazni materijal za MKS (SL38), u
čijoj je osnovi poli(2-hidroksietil metakrilat), pо tеhnоlоgiјi i u
prоizvоdnim lаbоrаtоriјаmа kоmpаniје Soleko (Milano, Italija). Od
dobijenih materijala napravljena su nanofotonična MKS (SL38-A, SL38-B i
SL38-C, redom) u kompaniji Optix (Beograd, Srbija). Površinska
karakterizacija izvršena je Miskorskopijom atomskih sila (MAS) i metodom
lagunarnosti. Rezultati su pokazali da SL38-B ima niže vrednosti osnovnog
parametra hrapavosti od SL38-A i SL38. Za SL38-C, vrednosti parametara
topografije bili su između vrednosti parametara nanofotoničnih mekih
kontaktnih sočiva SL38-A i SL38-B.
Analiza lagunarnosti MKS potvrđuje stanje površine sočiva ili kao
adekvatno (nagnut p-dijagram) ili kao neadekvatno (iskrivljen p-dijagram),
a s obzirom na naknadnu stabilnost suznog filma. Nanofotonično MKS u
oznaci SL38-C ispoljava prihvatljivije performanse po pitanju
funkcionalnog ponašanja u poređenju sa ostalim MKS.
Dobijeni su pozitivni rezultati inkorporiranja nanomaterijala u bazni
material, koji pokazuju bolji kvalitet površina nanofotoničnih MKS. Na
osnovu ovih eksperimenata potvrđeno je da inkorporiranje derivata
fulerena ne utiče na porast parametara hrapavosti površine.
PB  - Association of the Chemical Engineers of Serbia
T2  - HEMIJSKA INDUSTRIJA
T1  - Characterization of surface roughness of new nanophotonic soft contact lenses using lacunarity and AFM method
T1  - Karakterizacija hrapavosti površine novih nanofotoničnih mekih kontaktnih sočiva mikroskopijom atomskih sila i metodom lagunarnosti
EP  - 166
IS  - 3
SP  - 157
VL  - 72
DO  - 10.2298/HEMIND170924004M
ER  - 

@article{
author = "Mitrović, Aleksandra and Bojović, Božica and Stamenković, Dragomir and Popović, Dejana",
year = "2018",
abstract = "The aim of this study was to develop new soft contact lens (SCL) materials which would,
after recommended and existing machining processes, improve surface roughness.
Nanomaterials (fullerene, fullerol and methformin hydroxylate fullerene) were
incorporated into commercial material for SCL (SL38) based on PHEMA, which were
derived by the technology in the production lab of the company Soleko (Milan, Italy).
Nanophotonic SCLs (SL38-A, SL38-B, SL38-C, respectively) were produced in the company
Optix (Belgrade, Serbia) from the obtained materials. For the surface characterization of
SCLs, AFM analysis and lacunarity method were performed. The results showed that for
the SL38-B average roughness value is lower than those of SL38-A and SL38. The
topography parameters of SL38-C were between the parameters of SL38-A and SL38-B.
Lacunarity analysis of AFM images confirmed that SCLs surface state should belong to
either group of adequate (slanted p-diagram) or inadequate (contorted p-diagram)
roughness concerning tear film stability. Nanophotonic SCL SL38-C exibits more acceptable
performance considering SCL surface functional behavior as compared to other SCLs. The
positive result of incorporating nanomaterials into basic material for SCL is better quality
of the nanophotonic SCLs surfaces. On the bases of these experiments, the assumption
that incorporation of fullerene derivate will not increase surface roughness parameters is
confirmed., U ovom radu predstavljeni su novi materijali za meka kontaktna sočiva
(MKS), koja bi nakon preporučene mašinske obrade imala poboljšana
svojstva hrapavosti površine. Nanomaterijali (fuleren, fulerol i metformin
hidroksilata fulerena) su inkorporirani u bazni materijal za MKS (SL38), u
čijoj je osnovi poli(2-hidroksietil metakrilat), pо tеhnоlоgiјi i u
prоizvоdnim lаbоrаtоriјаmа kоmpаniје Soleko (Milano, Italija). Od
dobijenih materijala napravljena su nanofotonična MKS (SL38-A, SL38-B i
SL38-C, redom) u kompaniji Optix (Beograd, Srbija). Površinska
karakterizacija izvršena je Miskorskopijom atomskih sila (MAS) i metodom
lagunarnosti. Rezultati su pokazali da SL38-B ima niže vrednosti osnovnog
parametra hrapavosti od SL38-A i SL38. Za SL38-C, vrednosti parametara
topografije bili su između vrednosti parametara nanofotoničnih mekih
kontaktnih sočiva SL38-A i SL38-B.
Analiza lagunarnosti MKS potvrđuje stanje površine sočiva ili kao
adekvatno (nagnut p-dijagram) ili kao neadekvatno (iskrivljen p-dijagram),
a s obzirom na naknadnu stabilnost suznog filma. Nanofotonično MKS u
oznaci SL38-C ispoljava prihvatljivije performanse po pitanju
funkcionalnog ponašanja u poređenju sa ostalim MKS.
Dobijeni su pozitivni rezultati inkorporiranja nanomaterijala u bazni
material, koji pokazuju bolji kvalitet površina nanofotoničnih MKS. Na
osnovu ovih eksperimenata potvrđeno je da inkorporiranje derivata
fulerena ne utiče na porast parametara hrapavosti površine.",
publisher = "Association of the Chemical Engineers of Serbia",
journal = "HEMIJSKA INDUSTRIJA",
title = "Characterization of surface roughness of new nanophotonic soft contact lenses using lacunarity and AFM method, Karakterizacija hrapavosti površine novih nanofotoničnih mekih kontaktnih sočiva mikroskopijom atomskih sila i metodom lagunarnosti",
pages = "166-157",
number = "3",
volume = "72",
doi = "10.2298/HEMIND170924004M"
}

Mitrović, A., Bojović, B., Stamenković, D.,& Popović, D.. (2018). Characterization of surface roughness of new nanophotonic soft contact lenses using lacunarity and AFM method. in HEMIJSKA INDUSTRIJA
Association of the Chemical Engineers of Serbia., 72(3), 157-166.
https://doi.org/10.2298/HEMIND170924004M

Mitrović A, Bojović B, Stamenković D, Popović D. Characterization of surface roughness of new nanophotonic soft contact lenses using lacunarity and AFM method. in HEMIJSKA INDUSTRIJA. 2018;72(3):157-166.
doi:10.2298/HEMIND170924004M .

Mitrović, Aleksandra, Bojović, Božica, Stamenković, Dragomir, Popović, Dejana, "Characterization of surface roughness of new nanophotonic soft contact lenses using lacunarity and AFM method" in HEMIJSKA INDUSTRIJA, 72, no. 3 (2018):157-166,
https://doi.org/10.2298/HEMIND170924004M . .

TY  - CONF
AU  - Mitrović, Aleksandra
AU  - Dragićević, Aleksandra
AU  - Popović, Dejana
AU  - Conte, Manuel
AU  - Stamenković, Dragomir
PY  - 2018
UR  - http://rfasper.fasper.bg.ac.rs/handle/123456789/3023
C3  - The book of Abstract
T1  - TGA and DTA analysis of soft contact lenses based on poly (hydroxyethyl methacrylate) and fullerenes
EP  - 16
SP  - 16
UR  - https://hdl.handle.net/21.15107/rcub_rfasper_3023
ER  - 

@conference{
author = "Mitrović, Aleksandra and Dragićević, Aleksandra and Popović, Dejana and Conte, Manuel and Stamenković, Dragomir",
year = "2018",
journal = "The book of Abstract",
title = "TGA and DTA analysis of soft contact lenses based on poly (hydroxyethyl methacrylate) and fullerenes",
pages = "16-16",
url = "https://hdl.handle.net/21.15107/rcub_rfasper_3023"
}

Mitrović, A., Dragićević, A., Popović, D., Conte, M.,& Stamenković, D.. (2018). TGA and DTA analysis of soft contact lenses based on poly (hydroxyethyl methacrylate) and fullerenes. in The book of Abstract, 16-16.
https://hdl.handle.net/21.15107/rcub_rfasper_3023

Mitrović A, Dragićević A, Popović D, Conte M, Stamenković D. TGA and DTA analysis of soft contact lenses based on poly (hydroxyethyl methacrylate) and fullerenes. in The book of Abstract. 2018;:16-16.
https://hdl.handle.net/21.15107/rcub_rfasper_3023 .

Mitrović, Aleksandra, Dragićević, Aleksandra, Popović, Dejana, Conte, Manuel, Stamenković, Dragomir, "TGA and DTA analysis of soft contact lenses based on poly (hydroxyethyl methacrylate) and fullerenes" in The book of Abstract (2018):16-16,
https://hdl.handle.net/21.15107/rcub_rfasper_3023 .

TY  - JOUR
AU  - Miljković, Vladimir M.
AU  - Mitrović, Aleksandra
AU  - Stamenković, Dragomir
AU  - Popović, Dejana P.
AU  - Koruga, Đuro Lj.
PY  - 2016
UR  - http://rfasper.fasper.bg.ac.rs/handle/123456789/999
AB  - A Monte Carlo model of steady state light transport in contact lenses has been coded in ANSI Standard C. The Monte Carlo simulation offers a flexible, yet rigorous approach to photon transport in tissue which can be applied on the lenses as well. The method describes local rules of photon propagation that are expressed as probability distributions. However, the method is statistical and as such relies on calculating the propagation of large number of photons. As a result, this method requires a large amount of computational time. This method is applied on the lenses and the obtained results are presented. The results confirm the possibility for the theoretical prediction of optical properties of materials.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Integritet i vek konstrukcija
T1  - Monte Carlo simulation of light transport through lens
EP  - 130
IS  - 2
SP  - 125
VL  - 16
UR  - https://hdl.handle.net/21.15107/rcub_rfasper_999
ER  - 

@article{
author = "Miljković, Vladimir M. and Mitrović, Aleksandra and Stamenković, Dragomir and Popović, Dejana P. and Koruga, Đuro Lj.",
year = "2016",
abstract = "A Monte Carlo model of steady state light transport in contact lenses has been coded in ANSI Standard C. The Monte Carlo simulation offers a flexible, yet rigorous approach to photon transport in tissue which can be applied on the lenses as well. The method describes local rules of photon propagation that are expressed as probability distributions. However, the method is statistical and as such relies on calculating the propagation of large number of photons. As a result, this method requires a large amount of computational time. This method is applied on the lenses and the obtained results are presented. The results confirm the possibility for the theoretical prediction of optical properties of materials.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Integritet i vek konstrukcija",
title = "Monte Carlo simulation of light transport through lens",
pages = "130-125",
number = "2",
volume = "16",
url = "https://hdl.handle.net/21.15107/rcub_rfasper_999"
}

Miljković, V. M., Mitrović, A., Stamenković, D., Popović, D. P.,& Koruga, Đ. Lj.. (2016). Monte Carlo simulation of light transport through lens. in Integritet i vek konstrukcija
Institut za ispitivanje materijala, Beograd., 16(2), 125-130.
https://hdl.handle.net/21.15107/rcub_rfasper_999

Miljković VM, Mitrović A, Stamenković D, Popović DP, Koruga ĐL. Monte Carlo simulation of light transport through lens. in Integritet i vek konstrukcija. 2016;16(2):125-130.
https://hdl.handle.net/21.15107/rcub_rfasper_999 .

Miljković, Vladimir M., Mitrović, Aleksandra, Stamenković, Dragomir, Popović, Dejana P., Koruga, Đuro Lj., "Monte Carlo simulation of light transport through lens" in Integritet i vek konstrukcija, 16, no. 2 (2016):125-130,
https://hdl.handle.net/21.15107/rcub_rfasper_999 .