Convective Assembly and Transfer Using Flexible Templates

| June 4, 2013
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).

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).

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.

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