A pEek on the lab

TOBB Ekonomi ve Teknoloji Üniversitesi (Turkey)

Contacts: Itır KÖYMEN, ikoymen@etu.edu.tr

Web-site: http://sel.etu.edu.tr/







To test the chips fabricated, we need to package them for the correct measurement setup. The current system is a model tpt HB05 wire bonder and wedge system with vacuum hold and heater that has a 25um and 75um wire compatibility and can use different materials for wire such as gold and aluminium. The system is placed in anti static electric clean area with dust and air filters and enables us to package semiconductor and superconductor chips for measurement.

This is a Nikon optical microscope model eclipse LV100. The microscope has different zoom levels from 5x to 1000x that can view samples to the limits of visible light. It is capable of moving in the X-Y plane with precision wheels and also is able to rotate the sample up to 360 degrees. The microscope has different light sources from top and bottom and different light filters for a more clear image. It also has a camera that is connected to the computer and uses NIS Elements software for image capture. The software is capable of measurements and scaling on the images in real time. The microscope is also placed in the clean area for protecting the samples and lenses.

The Faraday cage contains two crycooler systems capable of reaching 4K temperatures. One is a pulse-tube that has 0.5 W of cooling power at 4K stage and the other is an exchange gas based GM type cryocooler. Both systems have heaters for adjusting temperature and different stages to mount circuits and equipment. The pulse-tube cooler has a 1mW IR- laser with chopper at holder with attocube ultrasonic micro-positioners in three dimensions.
There are measurement systems for low noise and high frequency measurements. The systems include Keithly femto current sources and ohm meters, Tektronix 4GHz scope and pattern generator with adjustable probes, and 64 channel logic analyzer. There are also 16-channel low noise analog differential amplifiers with up to 1000 gain and sensitive current sources. All the devices are controlled with Labview in an automated manner.


Center three from left to right Dr. Itır Köymen (Memristors & Bioinspired Circuits), Prof. Ali Bozbey (Superconductive Electronics), Dr. Sasan Razmkhah (Novel Computing Architectures).