Monitoring system for determining progress in a fabrication activity
First Claim
1. A method for making a structure, comprising:
- forming a layer of removable material with a first surface spaced apart from a second surface, the first surface formed along a first region from which the material is removable;
altering the first surface by removal of material from the layer;
monitoring material removed from the first surface to detect fluctuations in composition; and
terminating removal of material from the first surface when the composition of monitored material meets a criterion.
9 Assignments
0 Petitions
Accused Products
Abstract
Method for fabricating a structure. According to an exemplary embodiment, a structure is made by forming a layer of removable material with a first surface spaced a part from a second surface. The first surface is formed along a first region from which the material is removable. The first surface is altered by removal of material from the layer. Removed material from the first surface is monitored to detect fluctuations in a variable of composition in the layer, and removal of material from the first surface is terminated when the composition of monitored material meets a predetermined criterion. In an alternate embodiment a variable characteristic is imparted to a layer of material as a function of layer thickness and an operation is performed on the layer resulting in removal of material. Samples of removed material are monitored for variation in the characteristic and the operation is modified when a variation conforms with a criterion.
21 Citations
9 Claims
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1. A method for making a structure, comprising:
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forming a layer of removable material with a first surface spaced apart from a second surface, the first surface formed along a first region from which the material is removable;
altering the first surface by removal of material from the layer;
monitoring material removed from the first surface to detect fluctuations in composition; and
terminating removal of material from the first surface when the composition of monitored material meets a criterion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. Method for manufacturing comprising the steps of:
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imparting a variable characteristic to a layer of material as a function of layer thickness;
performing an operation on the layer;
monitoring samples of the material for variation in the characteristic; and
modifying the operation when a variation conforms with a criterion. - View Dependent Claims (9)
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Specification