We demonstrate that the functionalization of carbon nanotubes dramatically alters their sorption characteristics. The effect of covalent functionalization of multiwalled carbon nanotubes (MWNTs) on the gas phase adsorption and desorption of polar and nonpolar organics is presented. Carboxylation and nitration led to the generation of polar functional groups on the nanotube surface. The derivati...

PDMS (polydimethylsiloxane) elastomer is widely used in MEMS. However, PDMS is non-conductive and as a result is used in mostly structural applications. We report methods for monolithic integration of conductive and non-conductive PDMS for realizing wholly polymer-based devices with embedded elastomer wires, electrodes, heaters, and sensors. In this work we demonstrate elastomer strain gauges, ...

Flexible and wearable sensors for human performance sensing have received increased attention, particularly for fitness, healthcare, sports, and military applications. In particular, the measurement of human vital signals provides rich datasets for assessing the subject’s physiological or psychological condition, which are directly linked to performance. Instead of using conventional, bulky, we...

High-pressure x-ray-diffraction studies have been carried out upto 20 GPa on iron-filled multiwalled carbon nanotubes ~MWNTs!. The pressure dependence of the intertubular spacing d0 of the filled MWNTs shows a sharp change at 9 GPa which is not observed in pristine MWNTs. The iron present as nanowires inside the MWNT is in the form of a-Fe and Fe3C. Both of these phases show higher compressibil...

We report on an experimental study of diffusive transport near the highly transparent interface of niobium(Nb)/multi-walled carbon nanotube (MWNT) junctions realized by utilizing the nanopores of alumina membranes. In the magnetic-field dependence of observed conductance increase, the transition temperatures vs nanotube length diagram, and the zero-bias conductance peak, we observed proximityin...

We report on the energetic and structural stability of configuration-tunable, bi-directional linear bearings based on cap-less, partial segments engineered within individual multi-walled carbon nanotubes (MWNTs). Using computational models, we show that an externally applied excitation force can be used to select an operating bearing configuration with a desired stiffness and operating frequenc...