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A matrix of explosive cells can include plural explosive cells formed in an array in a common substrate. Each cell can be formed as a recess filled with explosive material. An ignition device has an addressable ignition source for each cell. This matrix can be used in combination with a projectile g

A matrix of explosive cells can include plural explosive cells formed in an array in a common substrate. Each cell can be formed as a recess filled with explosive material. An ignition device has an addressable ignition source for each cell. This matrix can be used in combination with a projectile guidance system. The projectile guidance system includes an antenna, a transceiver and a control processor. A method of guiding a projectile can include firing a projectile at a target, tracking the projectile and the target, determining a desired change in a flight path of the projectile, transmitting guidance commands to effect the desired change in the projectile's flight path to the projectile, receiving the guidance commands onboard the projectile and selectively igniting an explosive cell in a matrix of addressable explosive cells contained in a common substrate using the guidance commands.

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1. A matrix of explosive cells, comprising: plural explosive cells formed in an array in a common substrate, each cell being formed as a recess filled with explosive material; andan ignition device containing an addressable ignition source for each cell. 2. The matrix of claim 1, in combination with

1. A matrix of explosive cells, comprising: plural explosive cells formed in an array in a common substrate, each cell being formed as a recess filled with explosive material; andan ignition device containing an addressable ignition source for each cell. 2. The matrix of claim 1, in combination with a projectile guidance system for guiding a projectile, comprising: an antenna;a transceiver operatively connected with the antenna; anda control processor operatively connected with the transceiver and the matrix. 3. The system of claim 2, comprising: an external control means configured to communicate with the control processor. 4. The system of claim 3, wherein the external control means and control processor are configured to communicate using encrypted communications. 5. The system of claim 2, wherein the projectile is at least one of a bullet and an artillery round. 6. The system of claim 2, wherein the antenna is at least one of a radio frequency antenna and infrared antenna. 7. The system of claim 2, wherein the matrix is located on a portion of the projectile suitable for controlling a direction of flight of the projectile. 8. The matrix of claim 1, wherein the explosive material comprises thermite. 9. The matrix of claim 1, wherein the matrix comprises an SiO2 layer configured to protect and contain material therein. 10. The matrix of claim 1, wherein the ignition source is a semiconductor bridge. 11. The matrix of claim 10, comprising: a power supply configured to provide power to the semiconductor bridge, wherein the power supply is at least one of a thin-film thermal battery and a MEMS-based power supply device. 12. A method of guiding a projectile, comprising: firing a projectile at a target;tracking the projectile and the target;determining a desired change in a flight path of the projectile;transmitting guidance commands to effect the desired change in the projectile's flight path to the projectile;receiving the guidance commands onboard the projectile; andselectively igniting an explosive cell in a matrix of addressable explosive cells contained in a common substrate using the guidance commands. 13. The method of claim 12, comprising: igniting unused explosive cells upon determination that the projectile is about to impact the target. 14. A security system for a component to be damaged or destroyed, comprising: an antenna;a receiver operatively connected with the antenna;a control processor operatively connected with the receiver; anda matrix of explosive cells incorporated into the component and operatively connected with the control processor for being activated in response to a triggering event. 15. The system of claim 14, wherein the triggering event is indicative of a breach of security with respect to the component. 16. The system of claim 14, wherein the triggering event is provided by an external control means configured to communicate with the control processor. 17. The system of claim 14, wherein the triggering event is provided by an internal control means configured to communicate with the control processor. 18. The system of claim 14, wherein the antenna is at least one of a radio frequency antenna and infrared receiver. 19. The system of claim 14, wherein the matrix of explosive cells comprises thermite-filled recesses. 20. The system of claim 14, wherein the matrix of explosive cells comprises an SiO2 layer configured to protect and contain material therein. 21. The system of claim 14, comprising: a semiconductor bridge operatively connected to each explosive cell in the matrix of explosive cells and configured to receive an initiation signal from the control processor. 22. The system of claim 21, comprising: a power supply configured to provide power to at least one of the control processor, transceiver and semiconductor bridge, wherein the power supply is at least one of a thin-film thermal battery and a MEMS-based power supply device. 23. A method of providing security for a component to be damaged or destroyed, comprising: incorporating a matrix of explosive cells into the component;determining whether to initiate destruction of the component by use of the matrix of explosive cells, and in the event a determination is made to initiate destruction of the component, transmitting a destruction initiation command to a control processor operatively connected with the matrix of explosive cells;processing the transmitted destruction initiation command in the control processor; andselectively igniting one or more explosive cells in the matrix of explosive cells in accordance with the processed destruction command.