Patent ID: 8057602

Claim:
A processing chamber, comprising: a substrate support comprising a plurality of ports having one or more apertures that each receive a flow of fluid from one or more flow controllers, wherein each of the plurality of ports are adapted to direct the received fluid in a predominant flow direction that is not the same as the predominant flow direction of the other plurality of ports; a sensor that is positioned to monitor the position of a substrate disposed over the substrate support that is disposed within a processing region of the processing chamber; and a controller that is configured to receive a signal from the sensor and is adapted to control the position of the substrate by controlling the flow of the fluid delivered by each of the plurality of ports from the one or more flow controllers; a pump that is adapted to reduce the pressure within the processing region to a pressure less than atmospheric pressure; and the substrate support further comprises an isolation feature that is positioned to substantially prevent the received fluid flow from flowing into the processing region when a substrate is disposed over the substrate support.