1. A carbon nano-tube (CNT) composition comprising:
a CNT; and
chemical connected to the CNT and having an electron withdrawing functional group.
2. The CNT composition according to claim 1, wherein the number of the functional group of the chemical having an electron withdrawing functional group is one or more.
3. The CNT composition according to claim 2, wherein when the number of the functional group of the chemical having an electron withdrawing functional group is two or more, it is a homogeneous functional group or heterogeneous functional group.
4. The CNT composition according to claim 1, wherein the functional group includes \u2014CF3, \u2014CN, \u2014S\u2550O, \u2014SO3H, \u2014NO2, \u2014NR4+, \u2014COR, \u2014COOR, \u2014CONR2, \u2014F, \u2014Cl and \u2014Br where R is H or selected from a group consisting of alkyl group or aryl group of C1-C15.
5. The CNT composition according to claim 1, wherein the chemical is selected from a group consisting of dichloroethane, dibromoethane, iodobenzene, formic acid, acetic acid, formanide, dimethyl sulfoxide, nitromethane, nitrobenzene, nitric acid, acetonitrile, benzonitrile and perfluoro alkane.
6. A method of manufacturing a CNT thin film, comprising steps of:
preparing a CNT;
treating the CNT with chemical having an electron withdrawing functional group;
mixing the CNT treated with the chemical with a dispersing agent or dispersing solvent to prepare a CNT dispersed solution; and
forming a CNT thin film with the CNT dispersed solution.
7. The method according to claim 6, wherein the number of the functional group of the chemical having an electron withdrawing functional group is one or more.
8. The method according to claim 7, wherein when the number of the functional group of the chemical having an electron withdrawing functional group is two or more, it is a homogeneous functional group or heterogeneous functional group.
9. The method according to claim 6, wherein the functional group includes \u2014CF3, \u2014CN, \u2014S\u2550O, \u2014SO3H, \u2014NO2, \u2014NR4+, \u2014COR, \u2014COOR, \u2014CONR2, \u2014F, \u2014Cl and \u2014Br where R is H or selected from a group consisting of alkyl group or aryl group of C1-C15.
10. The method according to claim 6, wherein the chemical is selected from a group consisting of dichloroethane, dibromoethane, iodobenzene, formic acid, acetic acid, formanide, dimethyl sulfoxide, nitromethane, nitrobenzene, nitric acid, acetonitrile, benzonitrile and perfluoro alkane.
11. The method according to claim 6, wherein the CNT is treated with chemical having an electron donating functional group and is thus de-doped.
12. A method of manufacturing a CNT thin film, comprising steps of:
mixing a CNT with a dispersing agent or dispersing solvent to prepare a CNT dispersed solution;
forming a CNT thin film with the CNT dispersed solution; and
treating a surface of the CNT thin film with chemical having an electron withdrawing functional group.
13. The method according to claim 12, wherein the number of the functional group of the chemical having an electron withdrawing functional group is one or more.
14. The method according to claim 13, wherein when the number of the functional group of the chemical having an electron withdrawing functional group is two or more, it is a homogeneous functional group or heterogeneous functional group.
15. The method according to claim 12, wherein the functional group includes \u2014CF3, \u2014CN, \u2014S\u2550O, \u2014SO3H, \u2014NO2, \u2014NR4+, \u2014COR, \u2014COOR, \u2014CONR2, \u2014F, \u2014Cl and \u2014Br where R is H or selected from a group consisting of alkyl group or aryl group of C1-C15.
16. The method according to claim 12, wherein the chemical is selected from a group consisting of dichloroethane, dibromoethane, iodobenzene, formic acid, acetic acid, formanide, dimethyl sulfoxide, nitromethane, nitrobenzene, nitric acid, acetonitrile, benzonitrile and perfluoro alkane.
17. The method according to claim 12, wherein the CNT is treated with chemical having an electron donating functional group and is thus de-doped.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of producing a self-authenticating document, comprising:
providing a document stock having at least one anticounterfeit feature and having preprinted thereon an essentially unique identifier;
providing information content for the document comprising at least one of text and graphic images;
generating a digital signature of said information content;
producing a self-authenticating message comprising a cryptographic combination of the digital signature and the essentially unique identifier; and
printing the information content and the self-authenticating message on the document stock by means of a computer printer.
2. The method according to claim 1, further comprising the step of authenticating the document by verifying that the self-authenticating message corresponds to the digital signature of the information content and the essentially unique identifier.
3. The method according to claim 1, further comprising the step of receiving the information content and the self-authenticating message.
4. The method according to claim 1, wherein the anticounterfeit feature comprises a set of visually distinct fibers in said document stock.
5. The method according to claim 1, wherein the essentially unique identifier comprises a composite of a random portion and a predictable portion.
6. The method according to claim 1, further comprising the step of accounting to a content proprietor for a printing of the document.
7. The method according to claim 6, wherein said accounting comprises issuing a request for the document content and electronic payment information; and receiving content and its associated digital signature.
8. The method according to claim 1, wherein said preprinting step comprises printing with a computer printer using a non-secure communications channel.
9. The method according to claim 1, wherein said printing step comprises printing with said computer printer using a non-secure communications channel.
10. The method according to claim 1, wherein said printing step comprises communicating the essentially unique identifier over a network to a server, receiving the document content over the network from the server, and printing the received content on the document stock.
11. The method according to claim 1, wherein said providing and preprinting steps are conducted securely.
12. The method according to claim 1, wherein the anticounterfeit features comprise at least one of a lithographed pattern printed on the document stock and an integral non-deterministic characteristic of the document stock.
13. The method according to claim 12, wherein the non-deterministic characteristic comprises a fiber pattern, further comprising the steps of recording the fiber pattern prior to said printing, and authenticating the document stock by comparing a consistency of the recorded fiber pattern with a fiber pattern determined at a time of authentication.
14. The method according to claim 1, further comprising the step of authenticating the document based on a public key-private key algorithm which authenticates the essentially unique identifier together with the document content.
15. An authenticatable recording medium, comprising:
a document stock having at least one counterfeit resistant feature;
an imprinted unique identifier on the document stock;
an information content recording surface with a blank area suitable for printing at least one of text and graphic images by means of a computer printer and a blank area for printing a self-authenticating message;
information content recorded on the content recording surface, said information content defining a distinct identification element; and
a self-authenticating message recorded on the content recording surface for authenticating the recording medium with the information content and the unique identifier, said message comprising a cryptographic combination of the unique identifier and the distinct identification element.
16. The authenticatable recording medium according to claim 15, further comprising an ascertainable integral non-deterministic characteristic of the document stock.
17. The authenticatable recording medium according to claim 16, wherein the non-deterministic characteristic comprises a fiber pattern.
18. The authenticatable recording medium according to claim 15, wherein the imprinted tamper resistant unique identifier comprises a predictable portion and a random portion.