Microdevice arrays formed by magnetic assembly

C - Chemistry – Metallurgy – 40 – B

Patent

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Details

C40B 60/00 (2006.01) C40B 40/00 (2006.01) C40B 50/00 (2006.01) C40B 70/00 (2006.01)

Patent

CA 2674219

Microdevices containing a predetermined preferential axis of magnetization are disposed in an array having discreet regions. Under influence of a magnetic field, the microdevices can have at least twelve discrete orientations, and can advantageously be flipped upside down in place. Microdevices can be coded in a manner that supports a coding space of at least 102, 103, 106 or even 1010 or more choices, and can include one or more chemically reactive sites. The regions can be defined by long and short bars, in which microdevices span gaps between the longer bars, and the shorter bars measure less than 60% of such gaps. Preferred embodiments are also provided to produce microfabricated microdevices for magnetic assembly-based arraying.

L'invention concerne des microdispositifs contenant un axe préférentiel prédéterminé d'aimantation disposés dans un réseau ayant des zones distinctes. Sous l'influence d'un champ magnétique, les microdispositifs peuvent avoir au moins douze orientations distinctes, et peuvent avantageusement être basculés sens dessus-dessous en place. Les microdispositifs peuvent être codés d'une manière qui supporte un espace de codage d'au moins 102, 103, 106 ou même 1010 ou plus de choix, et peuvent comprendre un ou plusieurs sites chimiquement réactifs. Les régions peuvent être définies par des barres longues et courtes, où les microdispositifs franchissent des espaces entre les barres plus longues, et les barres plus courtes mesurent moins de 60 % de tels espaces. Des modes préférés de réalisation sont également prévus pour produire des microdispositifs microfabriqués pour une mise en réseau basée sur un assemblage magnétique.

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