Diary and Events
NEC Birmingham(B40 1NT)
25/09/2019 - 26/09/2019
Sensors & Instrumentation Live will celebrate its 10 year anniversary in 2019 and the UK’s (more)
NEC, Birmingham(B40 1NT)
01/10/2019 - 03/10/2019
The UK’s largest ever event in the processing and packaging sector calendar. With over 350 exhibitors (more)
Air bearing stage delivers nanometre precision
The new PlanarHD air bearing stage from Aerotech features several design enhancements for increased throughput in ultra-high precision step-and-settle and scanning applications such as semiconductor processing and emerging MEMS/Nano technologies.
The 500x500mm travel stage includes larger air bearing surfaces for significantly improved dynamic characteristics as well as higher power linear servo motors on both axes to deliver an impressive specification that includes a 2m/sec scan velocity and peak acceleration to 5g - with a positioning resolution of up to 0.25 nanometres, repeatability to 50 nanometres and accuracy to +/-300 nanometres. In addition, the 500mm travel range is a future proof investment for 450 mm diameter wafer production.
The PlanarHD employs a low mass structural bearing design with a balanced air-on-air preload system for higher lateral, vertical and angular stiffness resulting in improved speed, acceleration and accuracy characteristics. Nominal payload is 5kg to maintain dynamic specifications with an upper limit of 30kg.
The H-bridge design utilises dual air-bearings, dual linear motors and dual linear encoders on the step axis; and in conjunction with Aerotech's A3200 control system, a calibrated orthogonal/yaw control of 1 arc-sec is made possible for perfectly parallel scans or process swaths over the entire surface of a wafer.
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