Physically unclonable security patterns created by electrospinning, and authenticated by two-step validation method

Tascioglu D., Atci A., Unluturk S. S., Ozcelik S.

NANOTECHNOLOGY, cilt.33, sa.9, 2022 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 9
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1088/1361-6528/ac3b0d
  • Dergi Adı: NANOTECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Biotechnology Research Abstracts, Chemical Abstracts Core, Communication Abstracts, Compendex, EMBASE, INSPEC, MEDLINE, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: InZnP, ZnS, DDT colloidal nanoparticle, quantum dots, fluorescent ink, electrospinning, security patterns, anticounterfeiting, POLYACRYLONITRILE SOLUTIONS
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

Counterfeiting is a growing economic and social problem. For anticounterfeiting, random and inimitable droplet/fiber patterns were created by the electrospinning method as security tags that are detectable under UV light but invisible in daylight. To check the authenticity of the original security patterns created; images were collected with a simple smartphone microscope and a database of the recorded original patterns was created. The originality of the random patterns was checked by comparing them with the patterns recorded in the database. In addition, the spectral signature of the patterns in the droplet/fiber network was obtained with a simple and hand-held spectrometer. Thus, by reading the spectral signature from the pattern, the spectral information of the photoluminescent nanoparticles was verified and thus a second-step verification was established. In this way, anticounterfeiting technology that combines ink formula, unclonable security pattern creation and two-level verification is developed.