Tečni kristali u funkciji security dizajna

Hrustem Smailhodžić, Aldin Obučina, Marija Garić

Sažetak

Spoznaja pojavnog svijeta nudi velike mogućnosti inventivnog korištenja zakonitosti iz otkrivenog. Primjer otkrića svojstava materijala od strane biologa Rajcinera 1888. (Friedrich Reinitzer), pruža jednu takvu mogućnost. Primijetio je pojavu da se stearin topi u zamagljenu tečnost na 52 °C, mjenjajući se na 58 °C u mutnu i na 62,5 °C u bistru tečnost. Dakle, fizikalno svojstvo materijala pod spoljnjim utjecajem može biti vidljivo i nevidljivo u ovom primjeru pod utjecajem temperature materijala. Veliki broj materijala od tada je otkriven sa takvim svojstvima u različitim temperaturnim područjima. To otvara mogućnost dizajna s materijalima čija vidljivost može biti planirana definiranom temperaturom. Takav primjer security postupka svjetlošću također je ostvarljiv prevođenjem nevidljivog područja talasnih dužina elektromagnetnog zračenja u oku vidljivo, putem uređaja . 1) (pogledaj radove Žiljak ). Rad ima za cilj da ponudi moguće skrivene informacije, vidljive samo u unaprijed određenom temperaturnom području.

Ključne riječi: tekući kristali, supstanca, valna duljina, temperatura, boja

Liquid crystals as a function of security design

Hrustem Smailhodžić, Aldin Obučina, Marija Garić

Abstract

The knowledge of the phenomenal world offers great opportunities inventive use of the legality of the detected. An example of the discovery of properties of materials by biologists Rajcinera 1888 (Friedrich Reinitzer), provides one such opportunity. He observed that the occurrence of the blurred melting stearin liquid at 52 ° C, changing to 58 ° C and the opaque to 62,5 ° C into a clear liquid. Thus, the physical properties of materials under external influence can be visible and invisible in this example, under the influence of temperature of the material. A large number of materials has since been discovered with such properties in different temperature ranges. This opens up the possibility of design with materials whose visibility can be planned a defined temperature. An example security procedure light is also attainable by translating the invisible regions of wavelengths of electromagnetic radiation in the visible eye, through the device. 1)(See works Žiljak). The paper aims to provide some opportunities hidden information visible only within a predetermined temperature range.

Keywords: liquid crystals, substance, wavelength, temperature, color


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