The VR Tray should be positioned on a vacuum plate designed to deliver vacuum to the underside of the tray. Stand-alone stations are commercially available however, with proper care applying a house vacuum to the backside of the tray (through the hole in the back of the tray) should also work. Best removal results are obtained by applying a vacuum of 25" of Hg. The Gel membrane may appear to be in the Release Mode even under relatively low vacuum conditions, but a full vacuum is necessary for optimal release.
Pick-up Tools
The largest tweezers tool compatible with the array size should be used in order to deliver the maximum twist or rotation motion. The Gel holding strength is weakest in the peel direction, therefore, the array can be easily removed from the Gel by simply applying rotation.
Array contact/Removal
Contact force between the pick-up tool and the array should be minimized so the array is not pressed into the Gel membrane. Once the array is properly engaged by the pick-up tool, the rate of ascent should initially be slow. Rapid ascent may tend to separate the array from the tool.
Membrane Tear
Gel membranes are relatively fragile and should he handled with care. If a membrane tears, then vacuum leakage at the tray will occur, which can inhibit array removal.
Vacuum Release is a trademark of Gel-Pak. Figures courtesy of Gel-Pak.
Through our Materials Chemistry Centers of Excellence in research and manufacturing we develop advanced, enabling materials for your micro/nanoelectronics, alternative energy, display/optoelectronics, nanotechnology and related materials science and engineering applications. Specialties include ALD precursors, ultra-high purity inorganic halides, fuel cell materials, electronic grade dyes, specialty monomers and cGMP grade polymers.
没有评论:
发表评论