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EP3787907A1 - Élément de sécurité avec structure de sécurité biologique et son procédé de production - Google Patents

Élément de sécurité avec structure de sécurité biologique et son procédé de production

Info

Publication number
EP3787907A1
EP3787907A1 EP19721278.0A EP19721278A EP3787907A1 EP 3787907 A1 EP3787907 A1 EP 3787907A1 EP 19721278 A EP19721278 A EP 19721278A EP 3787907 A1 EP3787907 A1 EP 3787907A1
Authority
EP
European Patent Office
Prior art keywords
contacts
growth
biological material
carrier
biological
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP19721278.0A
Other languages
German (de)
English (en)
Other versions
EP3787907B1 (fr
EP3787907C0 (fr
Inventor
Julian Barnett
Jens Bolten
Ulrich Plachetka
Thorsten Wahlbrink
Zoran KONKOLI
Andrew ADAMATZKY
Konrad SZACILOWSKI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Amo GmbH
Original Assignee
Amo GmbH
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 Amo GmbH filed Critical Amo GmbH
Publication of EP3787907A1 publication Critical patent/EP3787907A1/fr
Application granted granted Critical
Publication of EP3787907B1 publication Critical patent/EP3787907B1/fr
Publication of EP3787907C0 publication Critical patent/EP3787907C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/445—Marking by removal of material using chemical means, e.g. etching
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • 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
    • 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
    • B42D25/373—Metallic materials
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • 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
    • G07D7/02—Testing electrical properties of the materials thereof
    • 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
    • G07D7/206—Matching template patterns

Definitions

  • the invention relates to a security element with a biological security structure and to different methods for its production.
  • Security structures should be as unique as possible, imitation-proof and counterfeit-proof. They also have to meet other conditions, such as being durable, easily readable and verifiable. They should serve to be able to authenticate products.
  • the products can be a wide variety of different items, such as pharmaceuticals, spare parts (for example, for airplanes), banknotes, identity cards, documents, etc.
  • the security element is sufficiently small that it can be used on these products Objects can be attached, for example, on a bank card.
  • WO 2017/11457 2 Al a security element is known which has parts of biological origin cut to size with a laser. These parts are specially arranged and arranged with each other. The visual appearance is read out.
  • WO 2015/124770 A1 discloses a security element based on biometric data, which is intended to ensure communication. Unauthorized persons should not be given access to communication networks. The safety element is read out electronically.
  • a security element authorization methods, systems for authorization of security documents and the like are known. At least one enzyme is used. The genetic information of the enzyme is read.
  • the document cites a large number of patent publications in which security elements are described whose security properties are based on the uniqueness of organic material. For example, the uniqueness of DNA and RNA is used.
  • the present invention does not use cell constituents, genetic information or purely biochemical substances as a safety feature.
  • the object of the invention is to provide a security element, in particular starting from the security element according to WO 2017/11457 2 Al, which can be read out with simple technical means and is so highly complex that an identical double in the production and a successful Copies are unlikely.
  • a security element with a security structure that is visually interrogated as an image and electrically as a network of electrical resistors, with a carrier carrying a number n of individual electrical contacts, the security structure being located in the region between these contacts , has an electrical conductivity and provides an electrical connection in each case between many, preferably all n contacts, wherein the geometric shape of the security structure is determined
  • This security element is read both optically and electrically. Only if both results are positive, this is considered authentication.
  • the optical detection takes place via a camera, the captured image is compared with a stored image.
  • the electrical detection can take place simultaneously, the resistance network is interrogated, preferably the resistance values between two contacts are interrogated.
  • the resistance values can also be queried and correlated so that the relative values do not depend on the absolute values. As a result, for example, a drift and / or a temperature dependence of the resistance values can be compensated. Another compensation, for example by additional recording of the temperature during the read-out process and correction of the values via a formula, is possible.
  • Also in the electrical detection is compared with stored data.
  • the security structure has a geometric shape and a plurality of individual interconnects. Visually, the geometric shape is queried. Electrically, the resistor network formed is queried from the tracks.
  • the geomet- ric form is determined by a grown biological organism.
  • the biological organism grows branching from a starting area, which means that it does not spread out over its entire surface, but grows along the attractors in narrow veins or branches.
  • the biological organism covers a maximum of 70%, in particular a maximum of 50% and preferably a maximum of 30% of the area between the contacts or locations on the auxiliary carrier.
  • the veins and branches emanating from the starting area which has generally become larger as a result of growth, form paths, and each individual contact is connected to another contact via at least one path.
  • a lead between two contacts can have multiple paths.
  • the biological organism is preferably a protozoan, in particular
  • Myxogastria myxomycetes or true slime fungi
  • Dictyostelia and Protostelia as well as Copromyxa
  • Copyrmixella and Fonticula as well as Amoebozoa
  • Plasmodial amoebae, algae, fungi are also possible.
  • the starting area occupies a maximum of 10%, preferably only 5% of the area between the contacts, it is continuous.
  • the biological organism typically grows in days, for example 2 to 3 days, growing two-dimensionally in all directions from the starting area. At the same time, the organism remains topologically coherent. In this understanding of language, a tree that also shows a ramified growth grows only one-dimensionally in one direction, namely upwards.
  • the security structure does not have to extend to all contacts. Some few contacts or locations on the subcarrier can deliberately not be assigned with attractor material. This has the consequence that resistance values measured by these contacts are extremely high.
  • the carrier is preferably an insulator, in any case it has a conductivity which is at least two orders of magnitude lower than the conductor tracks of the resistance layer.
  • the number of contacts that are not connected to the resistor network should not exceed 20% of the number n of contacts. It is also possible that the contacts or locations on the subcarrier, to which the organism should not grow, with a To prove a rejecting material (Repulsor), which acts repulsive and thus opposite to the attractor material on the organism.
  • Repulsor rejecting material
  • the invention further relates to various methods for producing the security element.
  • the maximum distances between any two contacts in the range of one to 100 mm.
  • the grown organism should be so large that it fits into the area between the contacts. However, it is possible to use a larger organism, to grow it on a subcarrier and to capture its geometrical shape for transfer and to scale down to fit the reduction to the area between the contacts. It can also be worked with a magnification. The growth of the organism is only necessary until all contacts or places occupied with attractor material have been reached. After that, further growth is not necessary. In general, then the growth of the organism can be stopped, in particular the organism be killed when the organism has become sufficiently large or when a certain time has elapsed for the growth. He can also be removed.
  • the electrical conductivity of the safety structure is preferably achieved by resistance material which is already used industrially for electrical resistances, for example for metal film resistors, metal oxide film resistors and thick film resistors.
  • Plastic material such as PDMS or PANI, and doped semiconductors, such as SOI, may also be used.
  • the resistance material which is originally present as a resistance layer, has a location-dependent conductivity.
  • the support may be rigid or flexible in shape, it must be suitable to receive the electrical contacts and allow the further treatment steps.
  • the support may be paper, a semiconductor substrate, in particular SOI, ceramic, plastic material, glass or the like.
  • the contacts may be metallic, for example made by vapor deposition, they may be realized by conductive ink, such as graphite ink.
  • the invention also relates to the use of a security element for authentication of an object to which the security element is connected, wherein
  • the security element is detected by an interrogation device which on the one hand visually acquires the geometric shape of the security structure and compares it with an original image stored in one storage location and, on the other hand, electrically interrogates the resistance network and records the resistance values thereby acquired with original values stored in the memory location, compares, and
  • Attractor material and / or the repulsor material are preferably suitable for being applied to carriers or auxiliary carriers by a printing process or a stamping process. This material is particularly pasty.
  • the biological material of the biological organism which is applied in the area between the contacts or locations, is preferably applied by a simple transfer process such as, for example, stamping or printing (for example with an inkjet printer) and is also preferably as a paste or Liquid before.
  • Figure 1 is a plan view of the surface of a carrier, with a
  • electrically conductive layer (resistance layer) and is covered with electrical contacts
  • FIG. 2 shows a plan view like FIG. 1, but now with attractor material deposited on all contacts and biological material of a biological organism deposited in the area between the contacts;
  • Figure 3 is a sectional view through the arrangement of Figure 2 and along the
  • FIG. 4 is a plan view similar to FIG. 2 but showing the growth of the biological material.
  • FIG. 5 shows a plan view as in FIG. 4, but now with sufficiently closed growth of the biological organism, which has reached all contacts,
  • FIG. 6 shows the arrangement according to FIG. 5, but now after etching the resistance layer using the biological organism as mask
  • FIG. 7 shows a sectional view with a section line as for FIG. 3 and for the state as in FIG. 4, but now with an SOI substrate as carrier, FIG.
  • Figure 8 is a plan view of the surface of a carrier made of paper, on the
  • Carriers are applied contacts on which attractor material is de- poniert, in the starting area is biological material in the initial state, the state is thus similar to that in Figure 2,
  • Figure 9 is a plan view as Figure 8, but now when completed
  • Figure 10 is a plan view of the surface of a subcarrier, on the
  • FIG. 11 shows a plan view of the structure of FIG. 10, but now with growth completed
  • FIG. 12 shows a plan view of the structure according to FIG. 11, but additionally with a silicone layer on the upper side,
  • Figure 13 is a section along the section line XIII-XIII in Figure 12 and
  • Figure 14 is a plan view of a ready-to-use security part.
  • the first exemplary embodiment according to FIGS. 1 to 6, the second exemplary embodiment according to FIG. 7 and the third exemplary embodiment according to FIGS. 8 and 9 respectively relate to a security element according to alternative i) in claim 1
  • the fourth exemplary embodiment according to FIGS to 12 relates to a security element according to the alternative ii).
  • the first exemplary embodiment will first be discussed in detail, the further exemplary embodiments will then be discussed to the extent that they differ from the first embodiment. A feature described for one embodiment may also be used and used for another embodiment.
  • the carrier 20 is made in the embodiment of plastic, the contacts 22 are metallic, such as AI, they are vapor-deposited on a surface of the carrier 20. This surface is covered over an area with an electrically conductive layer, referred to hereinafter as resistance layer 24, in particular this resistance layer 24 extends over the contacts 22.
  • resistance layer 24 an electrically conductive layer, referred to hereinafter as resistance layer 24, in particular this resistance layer 24 extends over the contacts 22.
  • the resistive layer 24 covers the area between the contacts 22. It is advantageous if the resistive layer 24 extends outwardly only extends beyond the contacts 22, but not further, that is to say to the limit, as indicated in FIG. 1, that is to say in particular the boundary of the carrier 20.
  • the resistance layer 24 is continuous, it is mathematically connected.
  • attractor material 26 is applied to the contacts 22.
  • These are, for example, nutritional paste.
  • a maximum of three, preferably a maximum of two, of the sixteen contacts 22 can not be filled with the nutrient paste; if necessary, they can be coated with a counteracting repulsor material.
  • biological material 28 is deposited, in the specific case for one
  • FIG. 3 shows a sectional view through the arrangement according to FIG. 2, recognizing the starting region 29 and the attractor material 26 located on the contacts 22.
  • FIG. 1 An initial stage of the growth is shown in FIG
  • the center or the spot of the biological material 28 has already grown over the starting area 29. From this spot, individual branches and branches have grown out with a growth direction in two dimensions and thus in the area, they branch and branch out at a distance from the original starting area 29. Starting from the starting area 29, the biological material becomes areally greater. For example, the spot increases by a maximum of tenfold. This is shown by a comparison of FIGS. 2 and 4, whereby FIG. 4 does not yet show the final growth. The stain itself does not reach the contacts 22.
  • the geometric shape of the grown slime mold is topologically coherent. It carries at least one path formed by the biological organism, from each contact 22 to each other contact 22, optionally over the spot. Often they are multiple paths that differ in length and cross section and typically have a varying cross section along their length. Any remaining remains of attractor material 26 are removed.
  • the next step is now an etching process, preferably dry chemical.
  • ionized oxygen is used; oxygen cores and / or ions are directed onto the arrangement substantially perpendicular to the plane of the paper of FIG.
  • the organism acts as a mask, which protects the resistance layer 24 against the etching process.
  • the contacts 22 are also not attacked and continue to exist after the etching step. As a result, only part of the resistive layer 24 has been removed, the remainder remaining of the resistive layer 24 is an exact replica of the geometric shape of the biological organism. Other methods to reduce the resistance layer 24 to the geometric shape of the biological organism are possible.
  • FIG. 6 shows the state after the etching.
  • the contacts 22 are now electrically interconnected (only) by a network of resistive material. Between any two contacts 22 there is an electrical connection via at least one path of a certain length and a certain cross section. Compared with the current flow between two other contacts, there are different lengths, different cross sections and usually also a different number of paths. This results in different resistance values.
  • the geometric shape of the grown slime mold is unique, it is used for the optical evaluation, which takes place parallel to the evaluation of the resistors, see also Figure 14, the network.
  • the second exemplary embodiment according to FIG. 7 uses as carrier 20 an SOI substrate, it has a thin Si layer 30.
  • the Si layer 30 is doped, and thus adjusted to a certain conductivity. However, it is not uniformly doped but conscious strongly inhomogeneous. Accordingly, the conductivity between any two points of the Si layer 30 and thus between two selected contacts 22 is also significantly different from the conductivity between two other arbitrary points and thus between two other contacts 22.
  • the resistance values differ between different contacts 22 by at least the factor 100, preferably by at least the factor 1000.
  • the resistance layer 24 is not homogeneous. Rather, it has a location-dependent conductivity. Such a location-dependent conductivity could be achieved in the first exemplary embodiment in that the resistance layer 24 is inhomogeneous, for example composed of individual regions overlapping one another at the edge or at least contacting one another and having different conductivity.
  • FIG. 7 shows a state of growth similar to that shown in FIG.
  • the state according to FIG. 5 has been reached, that is, the biological material 28 has grown sufficiently, the photoresist 32 is exposed.
  • the exposed parts of the photoresist 32 are removed so that photoresist only remains underneath the biological organism 32 is located.
  • the biological organism can now be removed. It is etched, this time preferably wet-chemically, for example with HF.
  • the geometric shape of the biological organism is transferred to the conductive Si layer 30.
  • this can be interrogated optically; on the other hand, it forms the resistance network according to the invention. If desired, it can be colored in order to improve the optical detectability; this can be carried out for another embodiment of the resistance layer 24.
  • the carrier 20 is made of paper.
  • the electrical contacts 22 are printed with conductive ink.
  • FIG. 8 shows the state in which attractor material 26 is applied to the contacts 22 and biological material in the starting region 29 28 is deposited.
  • a special biological material 28 is used which has its own electrical conductivity and / or an attractant material 26 which gives the biological material a certain electrical conductivity. If, as shown in Figure 9, the organism is sufficiently grown, its growth is blocked. This fixes its geometric shape, and the resistance network is now also completed, since the individual contacts 22 are connected to one another by electrically conductive paths which connect each individual contact 22 to any other contact 22.
  • a carrier 20 which has a number n of electrical contacts 22 on its surface and is covered over its entire area with a resistive layer 24.
  • an auxiliary carrier 34 for example made of paper, is used.
  • biological material 28 is deposited at a location corresponding to the start region 29 and, on the other hand, attractor material 26 is deposited at those locations 36 of the auxiliary carrier 34 which in their geometric position are congruent with the position of the contacts 22 of the above-mentioned carrier 20.
  • the number of locations 36 thus corresponds to the number n of contacts 22. However, it is not necessary to deposit 36 attractor material 26 on all locations, see above.
  • Figure 10 shows an intermediate stage similar to Figure 4. Completion is achieved when the biological organism has reached the locations 36 occupied by attractor material 26, see Figure 11. Now the growth of the biological organism can be interrupted. This can be frozen, for example.
  • the intermediate product thus obtained is now covered over with a molding compound 37, for example silicone, in a planar manner, FIG. 12 shows this state. It is demolded, see Figure 13 and there in particular the arrow, and thus obtained a stamp. Its wells originating from the biological organism are filled with a hardenable lacquer, here also, for example, photoresist can be used.
  • a hardenable lacquer here also, for example, photoresist can be used.
  • the stamp filled in this way is pressed precisely onto the previously produced carrier 20, so that the paint filling is transferred to the carrier 20, where it cures.
  • the cured lacquer forms a mask which, as in the first exemplary embodiment, makes it possible to remove only the resistance layer 24 outside the mask, in particular in an eg wet-chemical etching step.
  • the steps described lithography include to the state of the art in the production of semiconductors, it is so far worked according to the prior art.
  • the stamp thus obtained can be used several times, it can be prepared a number of carriers 20, which are each printed with the stamp with paint. In this way one obtains a number of identically constructed security elements. While with the alternative i) of claim 1 unique items are created, it is additionally possible according to the alternative ii) to produce a plurality of identical security elements.
  • a carrier 20 is produced as in Figure 1, but this time without resistance layer 24. Then, as described above and with reference to Figures 12 and 13, over a subcarrier 34, a stamp with the hollow shape of the fully grown biological organism created. In the depressions, however, it is not the paint which is introduced, but rather an electrically conductive paste which hardens after being transferred to the carrier 20. It may be, for example, a conductive paste with metal oxide or plastic powder. The thus prepared stamp is pressed accurately on the carrier 20, while the geometric shape and thus the resistance network is transferred to this.
  • FIG. 14 shows a ready-to-use safety part. It is better suited for practical use than the security element alone.
  • On a main carrier 38 n 16 main contacts 40 are applied. There is a security element between them, as shown above, for example. for the first embodiment has been described.
  • Each of the contacts 22 of the security element is connected via a connecting line 42 to one of the main contacts 40.
  • the electrical measurements are performed on the main contacts 40. As a result, the connection of the resistor network with the individual contacts 22 by the resistance measurement, see the ohm sign, is not affected.
  • the main carrier 38 may be made of a different material than the carrier 20, preferably the carrier 20 is part of the main carrier 38, in particular one-piece part.
  • the security element has a security structure that is interrogated visually as an image and electrically as a network of electrical resistances.
  • a number n of individual electrical contacts 22 is arranged on a carrier ger 20, a number n of individual electrical contacts 22 is arranged.
  • the safety structure is preferably in the region between these contacts, has an electrical conductivity, and establishes an electrical connection in each case to the n contacts whose resistance value is interrogated.
  • the geometric shape of the safety structure is determined by a grown biological organism which, starting from a starting region 29, has an altered growth and whose growth can be stimulated by growing towards attractors, this organism grows
  • the attractors are respectively positioned on the contacts
  • the attractors are positioned at the locations 36 of the subcarrier 34 where the contacts are located on the carrier 20, and the resulting geometric shape of the biological organism is transferred to the carrier 20.
  • the resistance network in particular the resistance layer 24 or the electrically conductive organism, is made, so that the geometric shape can be better visually recognized.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

L'élément de sécurité comprend une structure de sécurité qui est interrogée visuellement sous forme d'image et électriquement sous forme de réseau de résistances électriques. Un nombre n de contacts électriques individuels (22) sont disposés sur un support (20). La structure de sécurité se trouve de préférence dans la région située entre ces contacts, elle présente une conductivité électrique et elle établit une liaison électrique avec chacun des n contacts dont la valeur de résistance est interrogée. La forme géométrique de la structure de sécurité est déterminée i) soit par un organisme biologique, cultivé sur le support (20), qui présente une croissance ramifiée à partir d'une région de départ (29) et dont la croissance peut être stimulée du fait que l'organisme croît en direction d'attracteurs qui sont positionnés sur les contacts, ii) soit par un organisme biologique, cultivé sur un support auxiliaire (34), qui présente une croissance ramifiée à partir d'une région de départ (29) et dont la croissance peut être stimulée du fait que l'organisme croît en direction d'attracteurs qui sont positionnés aux emplacements (36) du support auxiliaire (34) au niveau desquels les contacts se trouvent sur le support (20). L'invention concerne le transfert de la forme géométrique ainsi obtenue de l'organisme biologique sur le support (20).
EP19721278.0A 2018-05-04 2019-05-02 Élément de sécurité avec structure de sécurité biologique et son procédé de production Active EP3787907B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018110789 2018-05-04
PCT/EP2019/061241 WO2019211377A1 (fr) 2018-05-04 2019-05-02 Élément de sécurité avec structure de sécurité biologique et son procédé de production

Publications (3)

Publication Number Publication Date
EP3787907A1 true EP3787907A1 (fr) 2021-03-10
EP3787907B1 EP3787907B1 (fr) 2023-06-28
EP3787907C0 EP3787907C0 (fr) 2023-06-28

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WO (1) WO2019211377A1 (fr)

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EP4193210A4 (fr) * 2020-08-06 2024-12-11 Arizona Board of Regents on behalf of Arizona State University Formation de dendrites pour marquage sécurisé au moyen de systèmes multi-fluides

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NL1028064C2 (nl) 2005-01-18 2006-07-19 Vhp Ugchelen Bv Authenticatiewerkwijze en -systeem voor het authenticeren van veiligheidsdocumenten en veiligheidsdocument.
WO2012065076A1 (fr) * 2010-11-14 2012-05-18 Arizona Board Of Regents, A Body Corporate Of The State Of Arizona Acting For And On Behalf Of Arizona State University Structures plasmoniques, procédés de fabrication de structures plasmoniques et dispositifs les comprenant
EP2998950B1 (fr) * 2013-03-12 2018-11-07 Arizona Board of Regents, a Body Corporate of the State of Arizona acting for and on behalf of Arizona State University Structures et étiquettes dendritiques
WO2015124770A1 (fr) 2014-02-24 2015-08-27 Hanscan Ip B.V. Dispositif d'identité portable à base biométrique
WO2015183243A1 (fr) * 2014-05-27 2015-12-03 Rolith, Inc. Éléments anti-contrefaçon et procédés de fabrication et de détection
WO2017114572A1 (fr) 2015-12-30 2017-07-06 Institute Of Physics Belgrade, University Of Belgrade Étiquette de sécurité dotée de particules découpées au laser d'origine biologique
GB2546975A (en) * 2016-01-29 2017-08-09 De La Rue Int Ltd Methods of manufacturing security structures for security documents

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