Post Doctoral Researcher, Materials Science and Engineering

Research Associate, 2003-2007, Institute of Industrial Science, University of Tokyo, Japan
Ph. D. 2003, Materials Science and Engineering, Kyoto University, Japan
M. S. 2000, Materials Science and Engineering, Kyoto University, Japan
B. S. 1998, Engineering Science, Kyoto University, Japan.

Office: 4115 MSEB
Telephone: 217-244-2460
E-mail: mmiyake@uiuc.edu

 

Electrodeposition of semiconductors in to photonic crystals

My research focuses on creating three-dimensional (3D) semiconductor photonic crystals by electrodeposition within microporous polymer templates fabricated by holographic lithography. Holographic lithography creates 3D microperiodic porous structures with a variety of crystalline symmetry in photoresists. The structured photoresist itself is highly functional. However, to obtain additional functionality such as a photonic band gap, it is necessary to have higher refractive index contrast. Therefore the structure is used as a template to build an inverse structure with a higher index of refraction material. Electrodeposition is suited to the replication of the topologically complex structures, since it starts from deep within the structure and then grows out towards the exposed surfaces. Furthermore, many materials of high refractive index can be electrodeposited, including semiconductors of II-VI, III-V and IV. Initial experiments of the electrochemical replication using colloidal crystal as a template [1] are promising. We now aim to apply electrochemical routes to the holographic structures, and thereby, to create new materials with unique optical properties.

References

[1] P. V. Braun and P. Wiltzius, Electrochemical Growth of Three Dimensionally Microperiodic      Structures, Nature, 402, 603, 1999

People

• Prof. Pierre Wiltzius
• Dr. Masao Miyake
• Dr. Joe Geddes
• Robert Barry
• Andrew Brzezinski
• Christy Chen
• Sidhartha Gupta
• Vinayak Ramanan
• James Rinne