A renewable flow cell integrating a microstructured pillar-array filter and a pneumatic microvalve was microfabricated to trap and release beads. A bead-based immunoassay using this device was also developed. This microfabricated device consists of a microfluidic channel connecting to a beads chamber in which the pillar-array filter is built. Underneath the filter, there is a pneumatic microval...

We present a novel device that allows the user to measure the Young Modulus of a material at the opening of a 5 mm diameter needle. The device relies on a miniaturized cantilever spring mounted at the end of the needle and interrogated via Fabry-Pérot optical fiber interferometry. The probe is repetitively brought in and out of contact with the sample at the end of the needle by means of a stee...

This paper proposes a scheme to produce realistic force reflection in a needle insertion problem. The target system is the spine needle biopsy simulator for tumor inspection by needle insertion. Simulated force is calculated using the 3D human tissue model, the orientation and position of the needle, and this force is produced through the PHANToM device. To generate realistic force reflection, ...

B- and N-doped carbon nanotubes (CNTs) with controlled workfunctions were successfully employed as charge trap materials for solution processable, mechanically flexible, multilevel switching resistive memory. B- and N-doping systematically controlled the charge trap level and dispersibility of CNTs in polystyrene matrix. Consequently, doped CNT device demonstrated greatly enhanced nonvolatile m...

BACKGROUND Image-guided robots are manipulators that operate based on medical images. Perhaps the most common class of image-guided robots are robots for needle interventions. Typically, these robots actively position and/or orient a needle guide, but needle insertion is still done by the physician. While this arrangement may have safety advantages and keep the physician in control of needle in...

This work describes a novel solution to remote R. ferrugineus monitoring. Classical, plastic RPW traps containing aggregation pheromones for RPW are modified to include an optical sensor that senses adult pests falling in the trap. The counts of the pests are accumulated through the day and the counts are transmitted via the mobile phone network straight to a smartphone/tablet or internet addre...

We present a novel needle-based device for the measurement of refractive index and scattering using low-coherence interferometry. Coupled to the sample arm of an optical coherence tomography system, the device detects the scattering response of, and optical path length through, a sample residing in a fixed-width channel. We report use of the device to make near-infrared measurements of tissues ...