Ramanova spektroskopija u zaštiti od krivotvorenja

Cindrić, Marija (2016) Ramanova spektroskopija u zaštiti od krivotvorenja. Master's thesis - Graduate Programme. Grafički fakultet. [Mentor: Zjakić, Igor].

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Abstract

Diplomski rad je proveden u svrhu istraživanja mogućnosti korištenja Ramanove spektroskopije kao nedestruktivne tehnike analiziranja krivotvorenih novčanica. Glavni cilj istraživanja je testiranjem uzoraka Ramanovom spektroskopijom i analiziranjem rezultata ustanoviti je li Ramanova spektroskopija odgovarajuća metoda za usporedbu različitih boja (cijan, magenta, žuta i karbon), različitih proizvođača (u ovom radu koristilo se šest različitih proizvođača ofsetnih boja) na različitim podlogama (papir i staklo). Ne samo u Republici Hrvatskoj već općenito u svijetu, ova metoda je u velikoj mjeri zanemarena što se tiče analiziranja krivotvorina. Uzorci otisnuti ofsetnim bojama različitih proizvođača na istoj papirnoj podlozi su testirani Ramanovom mikro-spektroskopijom koristeći Argon laser, valne duljine 514.5 nm. Jednostavnom usporedbom i kombinacijom podloga, boja i proizvođača možemo doći do zaključka da svaka boja, svaka podloga i svaki proizvođač ima jedinstveni Ramanov spektar. Rezultati pokazuju da se Ramanova spektroskopija može koristiti kao metoda analiziranja otisnutih uzoraka (krivotvorina) kao što su novčanice i dokumenti u svrhu dokazivanja originalnosti i izvora, te da je Ramanova spektroskopija tehnika analiziranja koja je brza, nedestruktivna, daje snažne i neosporive rezultate.

Item Type:	Master's thesis - Graduate Programme
Mentor name:	Zjakić, Igor
Thesis Committee:	Žiljak Stanimirović, Ivana and Zjakić, Igor and Mrvac, Nikola
Defence date:	28 September 2016
Abstract in english:	Graduate work was carried out in order to research the possibility of using Raman spectroscopy as a non-destructive analysis of counterfeit banknotes. The main objective of the research is testing samples with Raman spectroscopy and analyzing the results in order to determine whether the Raman spectroscopy is suitable method to compare different colors (cyan, magenta, yellow, and carbon), various manufacturers (in this research we used six different manufacturers of offset colors) on different surfaces (paper and glass). Not only in Croatia but also general in the world, this method is largely ignored when it comes to analyzing forgery. Samples printed with offset colors from different manufacturers on the same backing paper were tested by Raman micro-spectroscopy using Argon laser, with the wavelength of 514.5 nm. By simply comparing the results of different background, color and manufacturers we can come to the conclusion that every color, every background and every manufacturer has a unique Raman spectrum. The results show that Raman spectroscopy can be used as a method of analyzing the printed patterns (forgery) such as banknotes and documents in order to prove the originality and origin, and that the Raman spectroscopy technique of analysis is rapid, non-destructive metod which gives strong and indisputable results.
Uncontrolled Keywords:	Ramanova spektroskopija, nedestruktivna analiza, krivotvorenje, novčanice, ofsetni tisak
Keywords in english:	Raman spectroscopy, non-destructive analysis, counterfeiting, banknotes, offset
Subjects:	TECHNICAL SCIENCES > Graphic Technology
Institution:	Grafički fakultet
City:	Zagreb
Number of Pages:	75
Callnumber:	ZJA 2016 CIN
Inventory number:	DB577
Depositing User:	Nina Jelača
Status:	Unpublished
Date Deposited:	24 Nov 2016 08:48
Last Modified:	24 Nov 2016 08:48
URI:	http://eprints.grf.unizg.hr/id/eprint/2628

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