We investigate the response of multi-walled carbon nanotubes to mechanical strain applied with an Atomic Force Microscope (AFM) probe. We find that in some samples, changes in the contact resistance dominate the measured resistance change. In others, strain large enough to fracture the tube can be applied without a significant change in the contact resistance. In this case we observe that enough force is applied to break the tube without any change in resistance until the tube fails. We have also manipulated the ends of the broken tube back in contact with each other, re-establishing a finite resistance. We observe that in this broken configuration the resistance of the sample is tunable to values 15-350 kΩ greater than prior to breaking. Soon after their discovery by Iijima, carbon nanotubes 1 (CNTs) were predicted to have interesting electrical

We report on the precise placement of a single carbon nanotube ͑CNT͒ onto a microlectromechanial system ͑MEMS͒ structure. Using a hybrid atomic force microscope/scanning electron microscope ͑AFM/SEM͒ system, an individual multiwalled CNT was retrieved from a cartridge by the AFM tip, translated to a MEMS device, and then placed across a gap between an actuating and a stationary structure. Progress toward a resistance versus stress/strain measurement on a CNT will be discussed, including SEM images of a MEMS structure we have designed specifically for such a measurement.

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The Virtual-Reality Peripheral Network (VRPN) system provides a device-independent and network-transparent interface to virtualreality peripherals. VRPN's application of factoring by function and of layering in the context of devices produces an interface that is novel and powerful. VRPN also integrates a wide range of known advanced techniques into a publicly-available system. These techniques benefit both direct VRPN users and those who implement other applications that make use of VR peripherals.