Nara Institute of Science and Technology (NAIST)
will present a Seminar on IT and Materials Technologies.
Date: Tuesday August 21, 2007
Place: The University of California Santa Cruz Extension,
Sunnyvale Center, Moffett Business Park 1180 Bordeaux Drive
Sunnyvale, CA 94089
1. Development and Properties of Luminescent Chalcogenide Nanocrystals: application for solar cells and 3D optical disc
by Professor T. Kawai
2. A Versatile Tool for the Diagnosis of Crystalline-Silicon Solar- Cells Utilizing
Electroluminescence: save production costs by sorting out defective solar-cells in an early stage
by Professor T. Fuyuki
3. Pocket-Size Real-Time Blind Source Separation Module for Hands-Free Speech
Acquisition: clear reception of cell-phone call from a very noisy place
by Associate Professor H. Saruwatari
4. Tactile sensors for advanced robotics: tactile information processing for robotic
manipulation and human-machine interface
by Assistant Professor J. Ueda
5. CMOS Technologies for Biological and Medical Applications - Retinal Prosthesis, Brain Implantation and More: toward a bionic human
by Professor J. Ohta
6. Bio Nano Process - Fabrication of Inorganic Nanostructures by Protein Supramolecules: a proposal of biological path to the nano electronic devices using self-organization and biomineralization
by Visiting Professor I. Yamashita and Professor T. Fuyuki
Registration: BEFORE August 7 There is no charge for this seminar,but we need an accurate count by August 7 in order to properly schedule
conference room space.
Register today, to assure a seat.
Fax/email to: UC-Santa Cruz Extension: Nara Seminar
1101 Pacific Avenue. Suite 208
Santa Cruz, CA 95060
For Resistration Information,please visit
1. Development and Properties of Luminescent Chalcogenide Nanocrystals by Kawai
Highly emissive semiconductor nano-crystals are presented and their unique properties will be introduced. The CdTe nanocrystals showing high emission quantum yield without marked degradation has no protecting semiconductor layer such as ZnS in CdSe nano-crystals. Therefore, they act not only as the efficient emitting material but also as the photosensitizing materials in the photo-polymerization system. Efficient high-density optical recording medium is also expected to be produced based on the nanocrystals.
Emissive CdTe nanocrystrals
2. A Versatile Tool for the Diagnosis of Crystalline Silicon Solar Cells Utilizing Electroluminescence by Fuyuki
Crystalline silicon solar cells under the forward bias can emit infra-red light (so-called electroluminescence), the intensity of which reflects the number of minority carriers in the cell. Deficiencies such as defects in the crystal, grain boundaries, and cracks which reduce the minority carrier density can be clearly detected as dark spots, lines, and areas due to decreased EL intensity. The result shows that the electroluminescence technique is a versatile tool to evaluate the cell fabrication process and cell performances
3a. Pocket-Size Real-Time Blind Source Separation Module for Hands-Free
Speech Acquisition by Saruwatari
Blind source separation (BSS) is an approach taken to estimate original sound sources using information of only the mixed signals detected by multiple microphones. Recently much attention has been paid to BSS in many fields of acoustic signal processing such as cell-phone application and noise-robust speech recognition. We describe our new BSS algorithm which consists of independent component analysis and binary masking, imitating human brain and ears, and the efficacy of the BSS.
Demonstration of Sound Separation Microphone
We demonstrate a recently-developed pocket-size BSS module. The BSS module is applicable in many audio applications such as broadcasting from a very noisy place with eliminating background noise.
3b. Sound Separation Microphone by KOBELCO
Separate out one sound out of two mixed sound-sources.
Delay time is less than 50msec.
Can be connected to stereo microphone.
4. Tactile Sensors for Advanced Robotics by Ueda
Recent tactile sensing technologies and various applications will
- Vision-based Tactile Sensor and Slip Prediction Method
- Fingerprint Pointing Device for Mobile Application
- Teaching Playback of Dextrous Robot Manipulation
- MRI Compatible Force Sensor
(1) Robot Hand
(2) Fingerprint Pointing Device
(3) fMRI Compatible Sensor
5. CMOS Technologies for Biological and Medical Applications by Ohta
Recent development of CMOS technologies makes it possible to provide highly functional and versatile biomedical devices. I will present such examples as retinal prosthesis and brain implantation being carried out in my research laboratory, and address the future issues for bionic human using implantable CMOS technologies.
6. Bio Nano Process: Fabrication of Inorganic Nanostructures by Protein Supramolecules by Yamashita and Fuyuki
The combination of self-organization and biomineralization of the bio-supramolecules can make it possible to fabricate inorganic structures with ease. The structure will function as key-components of the nano-electronic devices. So far, we have successfully produced memory nanodots array in the floating gate memory employing cage-shaped protein. Further studies are progressing.
Schematic of a proposed application of the Bio Nano Process