Nano-particles Convective Assembly and Transfer Using Flexible Templates

NSF Grant Number: EEC-0425826
PI(s): Ahmed Busnaina
Post-doctoral Researcher: Nam-Goo Cha
Institution: Northeastern University

Objective: To achieve an effective directed assembly and transfer process using flat substrates (without trench structure).

Approach: Functionalized flexible flat templates were used for directed assembly of nanoparticles. These templates elastic properties ensure a more effective nano transfer process. The template has hydrophobic/hydrophilic patterns for the convective directed assembly.

Broader Impact: These processes can be applied to a continuous or reel-to-reel nano-manufacturing process. This will also make it possible to manufacture many devices such as optical devices, chemical sensors, high-density data-storage, plastic electronics, and biology applications.

Significant Results: We are successfully assembled on flat substrates and dry-transferred nano-particles to silicon wafers.

Figure 1. Schematic illustration of convective assembly (top). Assembly results of (a) low density, (b) high density squares and (c) high density line patterns and dry-transferred result of each patterns (d), (e), and (f).