TY  - CHAP
AU  - Kojić, Dušan
AU  - Bojović, Božica
AU  - Stamenković, Dragomir
AU  - Jagodić, N.
PY  - 2012
UR  - https://www.intechopen.com/chapters/26372
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7412
PB  - Biomedical Science, Engineering and Technology Edited by Dhanjoo N. Ghista
T2  - Biomedical Science, Engineering and Technology, INTECH
T1  - Contact Lenses Characterization by AFM MFM, and OMF
EP  - 388
SP  - 371
DO  - 10.5772/19951
ER  - 

@inbook{
author = "Kojić, Dušan and Bojović, Božica and Stamenković, Dragomir and Jagodić, N.",
year = "2012",
publisher = "Biomedical Science, Engineering and Technology Edited by Dhanjoo N. Ghista",
journal = "Biomedical Science, Engineering and Technology, INTECH",
booktitle = "Contact Lenses Characterization by AFM MFM, and OMF",
pages = "388-371",
doi = "10.5772/19951"
}

Kojić, D., Bojović, B., Stamenković, D.,& Jagodić, N.. (2012). Contact Lenses Characterization by AFM MFM, and OMF. in Biomedical Science, Engineering and Technology, INTECH
Biomedical Science, Engineering and Technology Edited by Dhanjoo N. Ghista., 371-388.
https://doi.org/10.5772/19951

Kojić D, Bojović B, Stamenković D, Jagodić N. Contact Lenses Characterization by AFM MFM, and OMF. in Biomedical Science, Engineering and Technology, INTECH. 2012;:371-388.
doi:10.5772/19951 .

Kojić, Dušan, Bojović, Božica, Stamenković, Dragomir, Jagodić, N., "Contact Lenses Characterization by AFM MFM, and OMF" in Biomedical Science, Engineering and Technology, INTECH (2012):371-388,
https://doi.org/10.5772/19951 . .

TY  - CONF
AU  - Bojović, Božica
AU  - Miljković, Zoran
AU  - Babić, Bojan
AU  - Kojić, Dušan
PY  - 2009
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6553
AB  - Phase image features are as easy to perceive, distinguish and accept as the eye can see. In
surface technology, differences in contour and colour on a phase image can be used either for
topography image's validation checking or for the better understanding of surface generation
process.
This paper describes the methodology of rough surface analyses and the role that the
phase images has in them. Two surfaces of same biomaterial were polished under different
conditions. Polished surfaces were prepared and recorded by scanning probe microscopy in the
only appropriate mode for delicate materials such as biomaterials - the tapping mode.
Simultaneously gathered topography and phase images were analysed in order to observe
measuring errors and choose topographic images suitable for standard and fractal roughness
analyses.
First, surface roughness of selected topographic images was analysed by standard
roughness parameters. Laboratory microscope JEOL SPM5200 has accompanied software
WinSPM for image analyses. Standard surface roughness analysis was also conducted using this
software. Surfaces’ roughnesses were evaluated based on a number of parameters correlated to
surface profile or surface area.
In addition, phase image also provided useful information for fractal analysis.
Topographic images were attached to ASCII files with data that represent surface height in
every pixel of recorded image. Based on phase image analysis results, checked and accepted
topography images were loaded in Matlab custom-made procedures for fractal analysis. Fractal
analysis based on modified “skyscrapers” method, set up in previous research, provides fractal
dimensions for polished surfaces' images. Based on the fact that machined surface with larger
fractal dimension is rougher than the one with the lower value, on the one hand, and that there is
an optimal value for good functional behaviour, on the other hand, final decision on surface
quality can be arrived at. As a result of two surfaces' roughness quantification, two values of
fractal dimension are used for surface characterisation, comparison and functional behaviour
prediction.
Authors underline the effectiveness of phase image in surface roughness analyses, either
conventional or fractal one. At the same time, the authors consider fractal analysis as more
suitable for identification, comparison and functional behaviour prediction when compared to
the conventional one. Fractal analysis conclusions can constitute valuable feed-back information
for manufacturing process, and in this case, could influence the selection for optimal polishing
duration.
PB  - Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade
C3  - 11th Annual Conference ”YUCOMAT 2009”, Poster session, The Book of Abstracts
T1  - Role of Phase Imaging in Surface Roughness Analysis of Biopolymers
EP  - 189
SP  - 189
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6553
ER  - 

@conference{
author = "Bojović, Božica and Miljković, Zoran and Babić, Bojan and Kojić, Dušan",
year = "2009",
abstract = "Phase image features are as easy to perceive, distinguish and accept as the eye can see. In
surface technology, differences in contour and colour on a phase image can be used either for
topography image's validation checking or for the better understanding of surface generation
process.
This paper describes the methodology of rough surface analyses and the role that the
phase images has in them. Two surfaces of same biomaterial were polished under different
conditions. Polished surfaces were prepared and recorded by scanning probe microscopy in the
only appropriate mode for delicate materials such as biomaterials - the tapping mode.
Simultaneously gathered topography and phase images were analysed in order to observe
measuring errors and choose topographic images suitable for standard and fractal roughness
analyses.
First, surface roughness of selected topographic images was analysed by standard
roughness parameters. Laboratory microscope JEOL SPM5200 has accompanied software
WinSPM for image analyses. Standard surface roughness analysis was also conducted using this
software. Surfaces’ roughnesses were evaluated based on a number of parameters correlated to
surface profile or surface area.
In addition, phase image also provided useful information for fractal analysis.
Topographic images were attached to ASCII files with data that represent surface height in
every pixel of recorded image. Based on phase image analysis results, checked and accepted
topography images were loaded in Matlab custom-made procedures for fractal analysis. Fractal
analysis based on modified “skyscrapers” method, set up in previous research, provides fractal
dimensions for polished surfaces' images. Based on the fact that machined surface with larger
fractal dimension is rougher than the one with the lower value, on the one hand, and that there is
an optimal value for good functional behaviour, on the other hand, final decision on surface
quality can be arrived at. As a result of two surfaces' roughness quantification, two values of
fractal dimension are used for surface characterisation, comparison and functional behaviour
prediction.
Authors underline the effectiveness of phase image in surface roughness analyses, either
conventional or fractal one. At the same time, the authors consider fractal analysis as more
suitable for identification, comparison and functional behaviour prediction when compared to
the conventional one. Fractal analysis conclusions can constitute valuable feed-back information
for manufacturing process, and in this case, could influence the selection for optimal polishing
duration.",
publisher = "Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade",
journal = "11th Annual Conference ”YUCOMAT 2009”, Poster session, The Book of Abstracts",
title = "Role of Phase Imaging in Surface Roughness Analysis of Biopolymers",
pages = "189-189",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6553"
}

Bojović, B., Miljković, Z., Babić, B.,& Kojić, D.. (2009). Role of Phase Imaging in Surface Roughness Analysis of Biopolymers. in 11th Annual Conference ”YUCOMAT 2009”, Poster session, The Book of Abstracts
Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade., 189-189.
https://hdl.handle.net/21.15107/rcub_machinery_6553

Bojović B, Miljković Z, Babić B, Kojić D. Role of Phase Imaging in Surface Roughness Analysis of Biopolymers. in 11th Annual Conference ”YUCOMAT 2009”, Poster session, The Book of Abstracts. 2009;:189-189.
https://hdl.handle.net/21.15107/rcub_machinery_6553 .

Bojović, Božica, Miljković, Zoran, Babić, Bojan, Kojić, Dušan, "Role of Phase Imaging in Surface Roughness Analysis of Biopolymers" in 11th Annual Conference ”YUCOMAT 2009”, Poster session, The Book of Abstracts (2009):189-189,
https://hdl.handle.net/21.15107/rcub_machinery_6553 .

TY  - CONF
AU  - Stamenković, Dragomir
AU  - Bojović, Božica
AU  - Miljković, Zoran
AU  - Kojić, Dušan
PY  - 2009
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6443
AB  - Ovaj rad, odnosi se na razvoj i primenu tehnologije mašinske obrade rezanjem biokompatibilnih polimera, uz prethodno utvrđivanje fizičkih karakteristika materijala kontaktnog sočiva korišćenjem savremene karakterizacije teksture površine primenom skenirajuće mikroskopije i opto-magnetike u domenu nanotehnologije, čime se, posle složene analize i implementacije naprednih proizvodnih tehnologija, ostvaruje predviđeno funkcionalno ponašanje u eksploataciji bazirano na adekvatnoj hrapavosti obrađene površine, što je izuzetno značajno za obezbeđivanje odgovarajuće adhezione sile prilikom prianjanja ovog optičkog pomagala rožnjači. U ovom radu predstavljen je značajan naučni doprinos, iskazan kroz ugrađeno znanje i iskustvo u domenu implementacije tehnologije obrade rezanjem, kao i preko analize digitalnih slika teksture obrađene površine biopolimera kontaktnog sočiva, dobijenih pomoću najsavremenijeg laboratorijskog mikroskopa koji radi u nanometarskoj skali (JEOL SPM5200). Rezultati do kojih se došlo imaju neposrednu praktičnu primenu, verifikovanu u domaćoj proizvodnoj organizaciji „Optix“-Zemun, gde se ova kontaktna sočiva proizvode za naše i inostrano tržište.
AB  - This work refers to the development and application of machining technology by cutting biocompatible polymers, with prior determination of the physical characteristics of the contact lens material using modern characterization of the surface texture using scanning microscopy and opto-magnetics in the field of nanotechnology, which, after complex analysis and implementation of advanced manufacturing technology, realizes the intended functional behavior in exploitation based on the adequate roughness of the processed surface, which is extremely important for ensuring the appropriate adhesion force when adhering this optical aid to the cornea. In this paper, a significant scientific contribution is presented, expressed through the built-in knowledge and experience in the field of the implementation of cutting processing technology, as well as through the analysis of digital images of the texture of the processed surface of the contact lens biopolymer, obtained using a state-of-the-art laboratory microscope operating in the nanometer scale (JEOL SPM5200). The results achieved have an immediate practical application, verified in the domestic production organization "Optix"-Zemun, where these contact lenses are produced for our and foreign markets.
PB  - Univerzitet u Beogradu, Mašinski fakultet, Katedra za proizvodno mašinstvo
C3  - Zbornik radova - 33. Savetovanje proizvodnog mašinstva SRBIJE 2009 sa međunarodnim učešćem / Proceedings of the 33th International Conference on Production Engineering Conference on Production Engineering of Serbia with foreign participants (in Serbian)
T1  - Технологија машинске обраде и биокомпатибилност полимера
T1  - Manufacturing Technology and Polimer Biocompatibility
EP  - 16
SP  - 13
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6443
ER  - 

@conference{
author = "Stamenković, Dragomir and Bojović, Božica and Miljković, Zoran and Kojić, Dušan",
year = "2009",
abstract = "Ovaj rad, odnosi se na razvoj i primenu tehnologije mašinske obrade rezanjem biokompatibilnih polimera, uz prethodno utvrđivanje fizičkih karakteristika materijala kontaktnog sočiva korišćenjem savremene karakterizacije teksture površine primenom skenirajuće mikroskopije i opto-magnetike u domenu nanotehnologije, čime se, posle složene analize i implementacije naprednih proizvodnih tehnologija, ostvaruje predviđeno funkcionalno ponašanje u eksploataciji bazirano na adekvatnoj hrapavosti obrađene površine, što je izuzetno značajno za obezbeđivanje odgovarajuće adhezione sile prilikom prianjanja ovog optičkog pomagala rožnjači. U ovom radu predstavljen je značajan naučni doprinos, iskazan kroz ugrađeno znanje i iskustvo u domenu implementacije tehnologije obrade rezanjem, kao i preko analize digitalnih slika teksture obrađene površine biopolimera kontaktnog sočiva, dobijenih pomoću najsavremenijeg laboratorijskog mikroskopa koji radi u nanometarskoj skali (JEOL SPM5200). Rezultati do kojih se došlo imaju neposrednu praktičnu primenu, verifikovanu u domaćoj proizvodnoj organizaciji „Optix“-Zemun, gde se ova kontaktna sočiva proizvode za naše i inostrano tržište., This work refers to the development and application of machining technology by cutting biocompatible polymers, with prior determination of the physical characteristics of the contact lens material using modern characterization of the surface texture using scanning microscopy and opto-magnetics in the field of nanotechnology, which, after complex analysis and implementation of advanced manufacturing technology, realizes the intended functional behavior in exploitation based on the adequate roughness of the processed surface, which is extremely important for ensuring the appropriate adhesion force when adhering this optical aid to the cornea. In this paper, a significant scientific contribution is presented, expressed through the built-in knowledge and experience in the field of the implementation of cutting processing technology, as well as through the analysis of digital images of the texture of the processed surface of the contact lens biopolymer, obtained using a state-of-the-art laboratory microscope operating in the nanometer scale (JEOL SPM5200). The results achieved have an immediate practical application, verified in the domestic production organization "Optix"-Zemun, where these contact lenses are produced for our and foreign markets.",
publisher = "Univerzitet u Beogradu, Mašinski fakultet, Katedra za proizvodno mašinstvo",
journal = "Zbornik radova - 33. Savetovanje proizvodnog mašinstva SRBIJE 2009 sa međunarodnim učešćem / Proceedings of the 33th International Conference on Production Engineering Conference on Production Engineering of Serbia with foreign participants (in Serbian)",
title = "Технологија машинске обраде и биокомпатибилност полимера, Manufacturing Technology and Polimer Biocompatibility",
pages = "16-13",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6443"
}

Stamenković, D., Bojović, B., Miljković, Z.,& Kojić, D.. (2009). Технологија машинске обраде и биокомпатибилност полимера. in Zbornik radova - 33. Savetovanje proizvodnog mašinstva SRBIJE 2009 sa međunarodnim učešćem / Proceedings of the 33th International Conference on Production Engineering Conference on Production Engineering of Serbia with foreign participants (in Serbian)
Univerzitet u Beogradu, Mašinski fakultet, Katedra za proizvodno mašinstvo., 13-16.
https://hdl.handle.net/21.15107/rcub_machinery_6443

Stamenković D, Bojović B, Miljković Z, Kojić D. Технологија машинске обраде и биокомпатибилност полимера. in Zbornik radova - 33. Savetovanje proizvodnog mašinstva SRBIJE 2009 sa međunarodnim učešćem / Proceedings of the 33th International Conference on Production Engineering Conference on Production Engineering of Serbia with foreign participants (in Serbian). 2009;:13-16.
https://hdl.handle.net/21.15107/rcub_machinery_6443 .

Stamenković, Dragomir, Bojović, Božica, Miljković, Zoran, Kojić, Dušan, "Технологија машинске обраде и биокомпатибилност полимера" in Zbornik radova - 33. Savetovanje proizvodnog mašinstva SRBIJE 2009 sa međunarodnim učešćem / Proceedings of the 33th International Conference on Production Engineering Conference on Production Engineering of Serbia with foreign participants (in Serbian) (2009):13-16,
https://hdl.handle.net/21.15107/rcub_machinery_6443 .