IT201900022908A1 - PHOTONIC MICRO-FINGERPRINT AS ANTI-COUNTERFEITING DEVICES - Google Patents

PHOTONIC MICRO-FINGERPRINT AS ANTI-COUNTERFEITING DEVICES

Info

Publication number
IT201900022908A1
IT201900022908A1 IT102019000022908A IT201900022908A IT201900022908A1 IT 201900022908 A1 IT201900022908 A1 IT 201900022908A1 IT 102019000022908 A IT102019000022908 A IT 102019000022908A IT 201900022908 A IT201900022908 A IT 201900022908A IT 201900022908 A1 IT201900022908 A1 IT 201900022908A1
Authority
IT
Italy
Prior art keywords
fingerprint
counterfeiting devices
photonic micro
photonic
micro
Prior art date
Application number
IT102019000022908A
Other languages
Italian (it)
Inventor
Santo Maria Penelope De
Riccardo Barberi
Mauro Daniel Luigi Bruno
Gia Petriashvili
Original Assignee
Univ Della Calabria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Della Calabria filed Critical Univ Della Calabria
Priority to IT102019000022908A priority Critical patent/IT201900022908A1/en
Priority to PCT/IB2020/061427 priority patent/WO2021111349A1/en
Publication of IT201900022908A1 publication Critical patent/IT201900022908A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/58—Dopants or charge transfer agents
    • C09K19/586—Optically active dopants; chiral dopants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/313—Fingerprints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/364—Liquid crystals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/60—Pleochroic dyes
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/2033—Matching unique patterns, i.e. patterns that are unique to each individual paper
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K2019/0444—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
    • C09K2019/0448—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group the end chain group being a polymerizable end group, e.g. -Sp-P or acrylate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2219/00—Aspects relating to the form of the liquid crystal [LC] material, or by the technical area in which LC material are used
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
IT102019000022908A 2019-12-04 2019-12-04 PHOTONIC MICRO-FINGERPRINT AS ANTI-COUNTERFEITING DEVICES IT201900022908A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT102019000022908A IT201900022908A1 (en) 2019-12-04 2019-12-04 PHOTONIC MICRO-FINGERPRINT AS ANTI-COUNTERFEITING DEVICES
PCT/IB2020/061427 WO2021111349A1 (en) 2019-12-04 2020-12-03 Photonic micro-fingerprints as anti-counterfeiting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000022908A IT201900022908A1 (en) 2019-12-04 2019-12-04 PHOTONIC MICRO-FINGERPRINT AS ANTI-COUNTERFEITING DEVICES

Publications (1)

Publication Number Publication Date
IT201900022908A1 true IT201900022908A1 (en) 2021-06-04

Family

ID=70154899

Family Applications (1)

Application Number Title Priority Date Filing Date
IT102019000022908A IT201900022908A1 (en) 2019-12-04 2019-12-04 PHOTONIC MICRO-FINGERPRINT AS ANTI-COUNTERFEITING DEVICES

Country Status (2)

Country Link
IT (1) IT201900022908A1 (en)
WO (1) WO2021111349A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5866236A (en) * 1996-02-16 1999-02-02 Minnesota Mining And Manufacturing Company Article with holographic and retroreflective features
WO2018033584A1 (en) 2016-08-16 2018-02-22 Cambridge Enterprise Limited Self-assembled nanocrystals

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5866236A (en) * 1996-02-16 1999-02-02 Minnesota Mining And Manufacturing Company Article with holographic and retroreflective features
WO2018033584A1 (en) 2016-08-16 2018-02-22 Cambridge Enterprise Limited Self-assembled nanocrystals

Non-Patent Citations (11)

* Cited by examiner, † Cited by third party
Title
GABRIELLA CIPPARRONE ET AL: "Chiral Self-Assembled Solid Microspheres: A Novel Multifunctional Microphotonic Device", ADVANCED MATERIALS, vol. 23, no. 48, 22 December 2011 (2011-12-22), pages 5773 - 5778, XP055022034, ISSN: 0935-9648, DOI: 10.1002/adma.201102828 *
HYUNG JONG BAE ET AL: "Biomimetic Microfingerprints for Anti-Counterfeiting Strategies", ADVANCED MATERIALS, vol. 27, no. 12, 1 March 2015 (2015-03-01), pages 2083 - 2089, XP055714082, ISSN: 0935-9648, DOI: 10.1002/adma.201405483 *
HYUNG JONG BAESANGWOOK BAECHEOLEON PARKSANGKWON HANJUNHOI KIMLILY NARI KIMKIBEOM KIMSUK-HEUNG SONGWOOK PARKSUNGHOON KWON, ADVANCED MATERIALS, vol. 27, 2015, pages 2083
INGO DIERKING: "Textures of liquid crystals", March 2006, WILEY-VCH
KEIZO NAKAYAMAAJUNJI OHTSUBOB, OPTICAL ENGINEERING, vol. 51, 2012, pages 040506 - 1
MATJAŽ HUMAR: "Liquid-crystal-droplet optical microcavities", LIQUID CRYSTALS, vol. 43, no. 13-15, 15 August 2016 (2016-08-15), GB, pages 1937 - 1950, XP055352469, ISSN: 0267-8292, DOI: 10.1080/02678292.2016.1221151 *
R. J. HERN?NDEZ ET AL: "Cholesteric solid spherical microparticles: chiral optomechanics and microphotonics", LIQUID CRYSTALS REVIEWS, vol. 4, no. 1, 2 January 2016 (2016-01-02), pages 59 - 79, XP055419158, ISSN: 2168-0396, DOI: 10.1080/21680396.2016.1193065 *
RAVIKANTH PAPPUBEN RECHTJASON TAYLORNEIL GERSHENFELD, SCIENCE, vol. 297, 2002, pages 2026
RIIKKA ARPPETHOMAS JUST SORENSEN, NATURE REVIEWS CHEMISTRY, 2017, pages 1
TETIANA ORLOVA ET AL.: "Creation and manipulation of topology states in chiral nematic microspheres", NATURE COMMUNICATIONS, vol. 6, no. 1, 6 July 2015 (2015-07-06)
TETIANA ORLOVA ET AL: "Creation and manipulation of topological states in chiral nematic microspheres", NATURE COMMUNICATIONS, vol. 6, no. 1, 6 July 2015 (2015-07-06), XP055594637, DOI: 10.1038/ncomms8603 *

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