Additively manufactured energetic material anti-tamper feature and implementation

1. A method for forming an anti-tamper feature on an apparatus, the method comprising:

depositing, by an additive manufacturing method, a layer of an energetic material on a surface of a substrate, the layer having a thickness of about 1 micrometer to about 10 millimeters;

wherein a reaction of the energetic material is exothermic and at least partially fractures the substrate after the reaction is initiated;

wherein the additive manufacturing method is a direct write method, an aerosol jet method, or a fused filament fabrication method.

2. The method of claim 1 , wherein a metal of the energetic material has a particle size of about 50 to about 150 nanometers, and a metal oxide of the energetic material has a particle size of about 40 to about 50 nanometers.

3. The method of claim 1 , wherein the energetic material is a pyrotechnic material or an explosive material.

4. The method of claim 1 , wherein the energetic material is aluminum-molybdenum (VI) oxide, aluminum-copper (II) oxide, aluminum-iron (II, III) oxide, aluminum-bismuth (III) oxide, or aluminum-tungsten (VI) oxide hydrate.

5. The method of claim 1 , wherein the reaction is a redox reaction.

6. The method of claim 1 , wherein the substrate is a bare die, a system in package (SiP), a circuit board, a microelectronic device, an electronic device, a backplane connector, an ethernet physical layer device, or a mobile phone Wi-Fi antenna.

7. The method of claim 1 , further comprising forming electrical circuitry for initiating the reaction of the energetic material on the substrate.