Micro biometric sensors are becoming more and more important for the security of portable electronic devices, such as laptop computers, PDAs and mobile phones because these devices can either store or transfer huge amount of personal information in very short period of time. Since the conventional security measure using “password” can be easily cracked, many large IT companies are trying new methods to enhance the security of their products, such as IBM thinkpad T43 computersHP Compaq NX6125, etc. It is estimated that with an average annual growth rate of 29.1%, the world biometric market would reach $3.4 billion by 2007. This will predominantly include fingerprint scan technology (59.4%), facial and iris scanning (13%), keystroke (0.4%) and signature scans (2.7%). In particular, the biggest market of fingerprint sensors is in the security enhancement of portable electronics (International Biometric Group).

 

This FYDP project is to design, manufacture and test a micro pressure-type fingerprint sensor. The design project includes five tasks: 1) Design and fabrication of a pressure-type micro fingerprint sensor, 2) Performance and reliability testing of fingerprint sensors, 3) Design and fabrication of the interface electronics for the fingerprint sensor to the portable electronics,  4) System integration and packaging of micro fingerprint sensors, 5) Self-cleaning coating on the surface of micro fingerprint sensors.

 

The design and manufacturing of the prototype fingerprint sensor chip are challenging. Students will go through training of basic MEMS design and analysis, hands-on micro-fabrication in the world-class clean room (www.mff.ust.hk), packaging and testing of the microchip in this project. Both team work and individual efforts will be emphasized. Each student will be responsible for one of the following design and manufacturing:

 

1.      Design and Fabrication of a Pressure-type Micro Fingerprint Sensor

Design objectives design a simple and economic micro fabrication process to realize a micro fingerprint sensor with high resolution and lost cost,

 

2.      Performance and Reliability Testing of Micro Fingerprint Sensor

Design objectives design an experimental setup to evaluate the performance and reliability of the fabricated fingerprint sensor,

 

3.      Design and Fabrication of the Interface Electronics for the Micro Fingerprint Sensor to the Portable Electronics

Design objectives design the interface electronic circuit and/or software for the fingerprint sensor to be used in portable electronic devices,

 

4.      Packaging of Micro Fingerprint Sensor and Integration to the Portable Electronics

Design objectivesdesign the cost-effective packaging solution for the micro fingerprint sensor,

 

5.      Self-Cleaning Coating on the surface of Micro Fingerprint Sensor

Design objectives: design the surface coating process to enhance the reliability of micro fingerprint sensor.

 

 

 

-        Prof Yi-Kuen Lee

-        Dr  LU Miao

-        WAN Kwok Leung   me_wklab @ ust.hk    (Team Leader)

-        AU Hin Liang           me_ahl @ust.hk

-        CHOW Ping Chuen     me_cpc @ust.hk

-        LO Kai Kin                me_lkkab @ust.hk

-        SO Wai Chung              me_swc @ust.hk

 

Source:http://ihome.ust.hk/~microsys/abstract/FYDP-yklee_2006.htm

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