Patent ID: 8133554

Claim:
A method of forming features on a workpiece by depositing material onto the workpiece in a reaction chamber, the method comprising: depositing a monolayer or approximately a monolayer of molecules of a gas onto the workpiece in the reaction chamber, wherein the molecules of the gas comprise a plurality of first molecules of a first gas; selectively irradiating a first portion of the first molecules on the workpiece in the reaction chamber with a laser beam having a selected radiation without irradiating a second portion of the first molecules on the workpiece with the selected radiation, wherein selectively irradiating the first portion comprises desorbing the first portion of the first molecules from the workpiece; depositing second molecules of a second gas onto the second portion of the first molecules, the first and second gases having a different composition; and repeating the depositing and the selectively irradiating to form a feature on the workpiece.