# US 7,608,478 B2 · On-chip igniter and method of manufacture

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- Number: US 7,608,478 B2
- Document ID: US7608478B2
- Status: Granted
- Kind: B2
- Application number: 11/261,831
- Filed: 2005-10-28
- Published: 2007-05-03
- Granted: 2009-10-27
- Earliest claimed: 2005-10-28
- Assignees: The Curators of the University of Missouri
- Inventors: Shubhra Gangopadhyay; Rajesh Shende; Steve Apperson; Shantanu Bhattacharya; Yuanfang Gao
- Web page: https://patentgrep.com/patent/US7608478B2

## CPC

- F42B 3/13: with semiconductive bridge
- F42B: EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D)

## Abstract

A chip for igniting nanoenergetic materials, includes a substrate, an igniter positioned on the substrate and the nanoenergetic material arranged in a linear pattern positioned on said substrate. A method of making a chip for igniting nanoenergetic materials includes providing a substrate, forming an igniter on the substrate and coating the substrate with a polymer layer. A pattern of nanoenergetic material comprising a fuel and an oxidizer is formed on the substrate. The nanoenergetic material is ignited by the igniter by supplying power to the leads attached to the heater film.

## Claims

### Claim 1

A chip for igniting nanoenergetic materials, comprising:
a substrate;
an igniter positioned on said substrate; and
a nanoenergetic material coated on said substrate; wherein said chip is configured for use as a diagnostic and further comprises a detector configured to detect passage of a flame front created by combustion of the nanoenergetic material.

### Claim 2 (depends on 1)

The chip of claim 1, wherein said nanoenergetic material comprises a nanoparticle and at least one of the group consisting of a nanoparticle, nanorod and a nanowell.

### Claim 3 (depends on 1)

The chip of claim 1, wherein said nanoenergetic material comprises a fuel and an oxidizer.

### Claim 4 (depends on 1)

The chip of claim 1, wherein said nanoeneregtic material comprises a fuel, an oxidizer, and a molecular linker.

### Claim 5 (depends on 1)

The chip of claim 1, wherein said nanoenergetic material comprises a fuel, an oxidizer, and at least one of the group consisting of a propellant and an explosive nanoparticle.

### Claim 6 (depends on 3)

The chip of claim 3, wherein said fuel comprises at least one of the group consisting of aluminum, boron, beryllium, hafnium, lanthanum, lithium, magnesium, neodymium, tantalum, thorium, titanium, yttrium and zirconium.

### Claim 7 (depends on 3)

The chip of claim 3, wherein said oxidizer comprises at least one of the group consisting of copper oxide, silver oxide, boron oxide, bismuth oxide, cobalt oxide, chromium oxide, iron oxide, mercuric oxide, iodine oxide, manganese oxide, molybdenum oxide, niobium oxide, nickel oxide, lead oxide, palladium oxide, silicone oxide, tin oxide, tantalum oxide, titanium dioxide, uranium oxide, vanadium oxide and tungsten oxide.

### Claim 8 (depends on 4)

The chip of claim 4, wherein said molecular linker comprises at least one of the polymers such as poly(vinyl pyridine), poly(methylmethacrylate), poly(vinyl butyral), poly(vinyl chloride), polycarbonate, polystyrene, fluoropolymers, teflon, cerboxyterminated butadiene acrylonitrile, glycidal azide polymer, and poly(vinyl pyrrolidone).

### Claim 9 (depends on 5)

The chip of claim 5, wherein said propellant or explosive comprises at least one of the group consisting nanoparticles of ammonium nitrate, ammonium perchlorate, cellulose nitrate, RDX, TNT, HMX, PBX, and CL-20.

### Claim 10 (depends on 1)

The chip of claim 1 wherein said flame propagation rate detector comprises a layer of platinum as a time varying resistance detector.

### Claim 11 (depends on 10)

The chip of claim 10 wherein said igniter comprises a titanium layer positioned between said substrate and said detector.

### Claim 12 (depends on 1)

The chip of claim 1, wherein said chip is configured to detect at least one of the group consisting of the tunable burn rate, shock wave velocity, tunable pressure, and tunable temperature.

### Claim 13

A multipoint controlled initiator for igniting nanoenergetic materials, comprising:
a casing; and
an array of chips; each of said chips comprising
a substrate;
an igniter positioned on said substrate;
a nanoenergetic material coated on said substrate; wherein said chip is configured for use in said multipoint controlled initiator.

### Claim 14

A chip for igniting nanoenergetic materials, comprising:
a substrate;
an igniter positioned on said substrate;
a nanoenergetic material coated on said substrate; wherein said chip is configured to control voltage from about 3V to about 100 V and to control ignition delay from less than a microsecond to a second.