4.5 Article

Ultrathin Silicon Chips of Arbitrary Shape by Etching Before Grinding

Journal

JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
Volume 20, Issue 4, Pages 791-793

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JMEMS.2011.2148159

Keywords

Grinding; separation technique; ultrathin microelectromechanical systems (MEMS)

Funding

  1. Information Society Technologies (IST) of the European Commission [IST-027017]

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A complementary-metal-oxide-semiconductor-compatible fabrication technique for ultrathin silicon chips of arbitrary shape is reported. It combines deep reactive ion etching and wafer grinding to define the in-plane geometry and thickness of the chips, respectively. Neural probes with shaft lengths up to 12 mm and thicknesses down to 25 mu m were fabricated.

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