Thursday, February 23, 2006, 1:30 pm — Small Seminar Room, Bldg. 510
We demonstrate a new, versatile class of nanoscale chemical sensors based on single-stranded DNA (ssDNA) as the chemical recognition site and single-walled carbon nanotube field effect transistors (swCN FETs) as the electronic read-out component. swCN-FETs with a nanoscale coating of ssDNA respond to gas odors that do not cause a detectable conductivity change in bare devices. Sensor responses differ in sign and magnitude for different gases, and can be tuned by choosing the base sequence of the ssDNA. These sensors detect a variety of odors, with rapid response and recovery times on the scale of seconds. The sensor surface is self-regenerating: samples maintain a constant response with no need for sensor refreshing through at least 50 gas exposure cycles. This remarkable set of attributes makes sensors based on ssDNA decorated nanotubes very promising for “electronic nose” and “electronic tongue” applications ranging from homeland security to disease diagnosis.
Hosted by: James Misewich
2834 | INT/EXT | Events Calendar
Not all computers/devices will add this event to your calendar automatically.
A calendar event file named "calendar.ics" will be placed in your downloads location. Depending on how your device/computer is configured, you may have to locate this file and double click on it to add the event to your calendar.
Event dates, times, and locations are subject to change. Event details will not be updated automatically once you add this event to your own calendar. Check the Lab's Events Calendar to ensure that you have the latest event information.