Research Areas

1. Advanced Nanoscale Manufacturing Using Focused Electron/Ion Beam Technologies

(1) Additive Nanoscale Manufacturing (printing) of Multi-Dimensional Functional Nanostructures.

(2) Subtractive Nanoscale Manufacturing of materials (Etching & Milling)

(3) Nanomaterial Manipulation (Defect Engineering, Functionalization & Implantation)

2. Engineering of 2D Nanomaterials: Graphene, TMDCs, h-BN and Others

(1) Development of Transfer Process

- Defect-Free Transfer over a Large Area

- Fabrication of van der Waals Heterostructures

(2) Manipulation and Imaging of Functional Properties

(3) Applications

- Electronic Devices (Transistors, Memristors, Optoelectronics)

- Smart Coating Film (Superhydrophobicity/hydrophilicity)

- Layered Structures-Based Superlubricity & Frictional Characteristic Control

- Flexible, Wearable Multi-Functional Sensors (Chemical/Bio, Mechanical Sensors)

- Energy Harvesting Devices (Layered Structure-Based Triboelectrics and Piezoelectric Devices)

3. Solution-Processed 2D Nanomaterials

(1) 2D Nanomaterial Colloidal Dispersion Preparation

(2) Fabrication of Lightweight, Strong 2D Nanomaterial-Polymer Composites

(3) Direct-Write Transfer of 2D Nanomaterials Using Printing Technologies for Thin Film Transistors and Sensors

4. Correlative Nanoscale Imaging and Characterization

(1) Scanning electron or scanning transmission electron microscopy

(2) Helium/Neon/Gallium ion microscopy

(3) Multi-functional scanning probe microscopy

(4) Secondary ion mass spectrometry (SIMS)

(5) Image data analytics