Ajay Kardak

Education:

Bachelor of Engineering, Mechanical Engineering (1999-2003)
Visveswaraiah Technological University, Bangalore, India 

Master of Science in Mechanical Engineering (Aug 2005- Aug 2008)
Louisiana State University, Baton Rouge, LA.

 

Research Interests:

Bio-MEMS, MOEMS, Sensors and Actuator

Research Projects:

Fabrication of Integrated Thermal Sensor and Actuator for Cryobiological Application: The aim of this research is to fabricate a system on a chip (SoC), which could sense and control the localized temperature at micro scale simultaneously. Micro fabricated Type-T thermocouples are being used as sensors and thermoelectric coolers based on peltier effect are used actuators. A set of an actuator and a sensor is treated as one unit and the proposed device will have an array of 100, such units. These units are separated from each other by a distance of 50mm from center-to-center such that device can sense and control the temperature of a single cell. The proto type of this device will be fabricated using modified LIGA and electroplating techniques. As the wiring layer at the bottom of the device itself acts as a heat sink, it can be separated from the main device using stud bumps, which will be fabricated using modified wire bonding process. These units will be embedded in polymethylmethacrylate (PMMA) layer that will aid as an interface between the cell matrix and the device and insulate the same. Thus a unique system on a chip (SoC) developed by this method can sense and control the temperature locally at micro scale.

Publications & Presentations:

Journal Papers:

 A. Kardak, S.P. Leibo and R.V. Devireddy. "Freezing Response of Equine and Macaque Ovarian Tissue in Mixtures of Dimethylsulfoxide and Ethylene Glycol",  ASME Journal of Biomechanical Engineering. 129:688-694 (2007).