Research Topics

In order to realize novel useful functions in micro and nanodevices or to considerably improve their performance, it is important to tailor the nanomorphology of various materials. Through the introduction of bottom-up processes as well as modern top-down processes, devices with advanced new structures can be designed and fabricated. We are developing a new technique to control material nanomorphologies and are investigating their applications.

Tailoring Nanomorphology

We focus our attention on physical self-assembly induced by the “Dynamic Oblique Deposition” (DOD) technique and attempt to realize complex 3D nanostructures.

Phsical Self-assembly by DOD:

Stacks Image 221
Stacks Image 223

Designing Deposition Processes Using Original Growth Simulator:

Growth Simulator: VFiGS

Stacks Image 304
M. Suzuki and Y. Taga, "Numerical study of the effective surface area of obliquely deposited thin films," J. Appl. Phys. 90 (11), 5599-5605 (2001).

Deasign and Fabrication of Rugate Filters

Stacks Image 312
K. Kaminska, M. Suzuki, K. Kimura, Y. Taga, and K. Robbie, "Simulating structure and optical response of vacuum evaporated porous rugate filters," J. Appl. Phys. 95 (6), 3055-3062 (2004).

Applications of Nanomorphology Control

We are interested in the shape-related useful properties from viewpoint of application to optical elements, sensing using various local enhancement effects and photo- and thermo-acoustic phenomena.
Stacks Image 320

Development of Novel Growth Techniques

We aim at developing novel techniques to control nanomorphology by clarifying the elementary atomic processes during growth of nanostructures.

Nanowire Growth by HT-GLAD:

We have found that various nanowires can be grown by high-temperature glancing angle deposition.
Stacks Image 336
Stacks Image 344
Stacks Image 391
Stacks Image 411