Programmable Self-assembly Method for Nanocomponents and Microcomponents
NanoComponent and MicroComponent Directed, Programmable Self-Assembly
Programmable self-assembly is a breakthrough directed self-assembly method that enables low-cost, highly consistent and high volume manufacturing of complex meso systems and devices (optical and fluidic, integrated circuits, sensors, actuators). Programmable self-assembly enables batch integration both in two and three dimensions, is highly parallel and works up to 1000 times faster than robotic manufacturing.
Programmable self-assembly is scalable and forms electrical interconnects between micrometer and potentially nanometer sized components which allows the resulting nanocomponents to be 10-100x smaller.
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Liquid Solder Receptors
The self-assembly-by-design concept uses patterned surface areas (receptors) to attract and electrically connect device components to form a functional device. The interaction driving the self-assembly is based on capillary forces between liquid solder drops and correspondingly shaped metallic binding sites on the components. Geometrical shape recognition is used to identify non-identical components which allow rapid reconfigurations by merely redesigning receptors that direct the assembly process (rather than reprogramming robots). Metal contacts on the semiconductor devices bind to the liquid solder-based receptors on a substrate surface during fluidic self-assembly. Different from existing concepts, the proposed self-assembly-by-design tool will be programmable, which means that selected receptors can be activated using an external voltage and assembled using the current CMOS manufacturing infrastructure.
Microelectronic and Optoelectronic Applications
This technology platform has applications in the production of current electronic devices such as integrated circuits, radio frequency identification (RFID) tags, optical and photonic devices, sensors, actuators, displays, and fluidic devices.
FEATURES AND BENEFITS OF PROGRAMMABLE, RECONFIGURABLE SELF-ASSEMBLY:
- Works in two and three dimensions, is highly parallel, and much faster than robotic manufacturing.
- Programmable and enables batch integration of different devices (i.e. different sources out of varying materials).
- Allows rapid reconfigurations by reprogramming receptors that direct the assembly process and makes use of the current CMOS manufacturing infrastructure.
Phase of Development Proof of concept complete. Six hundred AlGaInP/GaAs light-emitting diode (LEDs) segments self-assembled onto device carriers in 2 minutes without defects. Encapsulation units self-assembled onto the LED-carrier assemblies to form a three-dimensional circuit path to operate the final device.
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