Self-limiting electrical triggering for initiating fracture of frangible glass

A transient electronic device includes electronic elements (e.g., an SOI- or chip-based IC) and a trigger mechanism disposed on a frangible glass substrate. The trigger mechanism includes a switch that initiates a large trigger current through a self-limiting resistive element in response to a recei...

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Hauptverfasser: Chua, Christopher L, Limb, Scott J, Wang, Qian, Whiting, Gregory, Garner, Sean, Lujan, Rene A, Smullin, Sylvia J
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creator Chua, Christopher L
Limb, Scott J
Wang, Qian
Whiting, Gregory
Garner, Sean
Lujan, Rene A
Smullin, Sylvia J
description A transient electronic device includes electronic elements (e.g., an SOI- or chip-based IC) and a trigger mechanism disposed on a frangible glass substrate. The trigger mechanism includes a switch that initiates a large trigger current through a self-limiting resistive element in response to a received trigger signal. The self-limiting resistive element includes a resistor portion that generates heat in response to the trigger current, thereby rapidly increasing the temperature of a localized (small) region of the frangible glass substrate, and a current limiting portion (e.g., a fuse) that self-limits (terminates) the trigger current after a predetermined amount of time, causing the localized region to rapidly cool down. The frangible glass substrate is engineered such that a stress profile produced by the rapid heating/cooling of the localized region generates an initial fracture force that subsequently propagates throughout the glass substrate, whereby sufficient potential energy is released to powderize the electronic elements.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
title Self-limiting electrical triggering for initiating fracture of frangible glass
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