NanoTechnology: Materials, Processes & Devices

A microfluidic device for high-throughput synthesis of silver and gold nanostructures will be developed. We will design and fabricate microsystems that can simultaneously perform hundreds of reaction conditions on one chip with extreme precision and control. This will greatly improve the tunability of each reaction condition allowing for us to tailor the reaction conditions to synthesize nanostructures with controllable plasmon shifts. Hollow metal particles will be prepared based on a galvanic replacement reaction, which is a method driven by the electrical potential difference...

One of the major challenges towards scaling down of the electronic devices to the nm-regime is attaining controlled doping of semiconductor materials with atomic accuracy. At such small scales, the various existing technologies suffer from a number of setbacks, including an inability to achieve junction abruptness down to nm range, stochastic distribution of the dopant atoms, crystal damage, and incompatibility with nanomaterials. In this work, We report the formation of sub-5 nm ultrashallow junctions in 4” Si wafers enabled by the molecular monolayer doping of phosphorous and...

The goal of this project is to build a compact, transparent, polymeric resistive random access memory (RRAM) on a flexible substrate. This novel device is based on the concept of resistive switching characteristics which have already been demonstrated in many materials. The typical structure of this device is a sandwich of two metal layers separated by a functionalized insulator. This technology will enable the development of low-cost, highly reliable, high density,polymer-based nonvolatile memory devices which can be implemented in various transparent and flexible electronic systems...

Electrical connectors based on hybrid core-multishell nanowire forests that require low engagement forces are demonstrated. The physical binding and electrical connectivity of the nanowire electrical connectors arise from the van der Waals interactions between the conductive metallic shells of the engaged nanowire forests. Specifically, the nanofibrillar structure of the connectors causes an amplification of the contact area between the interpenetrating nanowire arrays, resulting in strong adhesion with relatively low interfacial resistance. The nanowire electrical connectors may...