Patent ID: 7271699

Claim:
An electrical structure, comprising: a resistor having a length L and an electrical resistance R(t) at a time t; and a laser radiation directed onto a portion of the resistor, wherein the portion of the resistor includes a fraction F of the length L, wherein the laser radiation heats the portion of the resistor such that the electrical resistance R(t) instantaneously changes at a rate dR/dt, wherein the resistor is coupled to a semiconductor substrate, wherein the resistor includes a layer of a first electrically conductive material coupled to a layer of a second electrically conductive material by a cell of a third electrically conductive material that is totally within the portion of the resistor, and wherein the third electrically conductive material includes a chemical combination of the first electrically conductive material and the second electrically conductive material, wherein the layer of the first electrically conductive material is totally within the portion of the resistor, wherein the layer of the second electrically conductive material is totally within the portion of the resistor, wherein a first bounding surface of the cell is in direct mechanical contact with the layer of the first electrically conductive material, wherein a second bounding surface of the cell is in direct mechanical contact with the layer of the second electrically conductive material, wherein the first bounding surface of the cell is opposite to and parallel to the second bounding surface of the cell and wherein the third electrically conductive material is distributed throughout the cell, wherein dR/dt>0, wherein the first electrically conductive material includes titanium, wherein the second electrically conductive material includes aluminum, and wherein the third electrically conductive material includes titanium trialuminide.