The laser alignment system of the ZEUS microvertex detector is described. The detector was installed in 2001 as part of an upgrade programme in preparation for the second phase of electron-proton physics at the HERA collider. The alignment system monitors the position of the vertex detector support structure with respect to the central tracking detector using semi-transparent amorphous-silicon ...

We investigated the use of a diode array detector in conjunction with isocratic cation-exchange liquid chromatography for detection of organic acids in urine. The spectra and retention times of abnormal peaks found on chromatography of urine from patients with methylmalonic aciduria, maple syrup urine disease, and lactic aciduria were recorded and compared with those obtained for group of pure ...

We demonstrate, experimentally and theoretically, excitable nanosecond optical pulses in optoelectronic integrated circuits operating at telecommunication wavelengths (1550 nm) comprising a nanoscale double barrier quantum well resonant tunneling diode (RTD) photo-detector driving a laser diode (LD). When perturbed either electrically or optically by an input signal above a certain threshold, t...

− Light emitting diode antifuse has been integrated into a microfluidic device that is realized with extended standard CMOS technological steps. The device comprises of a microchannel sandwiched between a photodiode detector and a nanometer-scale diode antifuse light emitter. In this chapter, the device fabrication process, working principle and properties will be discussed. Change in the inter...

[11 H. E. Harris and D. R. McCoy, "Simplif erators," Electronic Design, vol. 5, pp. 34[2] P. Malagari, "Four step design of diode f vol. 11, pp. 58-63, 2 August 1963. [3] J. F. Gibbons and H. S. Horn, "A circui over 9 decades," IEEE Trans. Circuit Th ber 1964. [4] J. Sheehy, 'Device provides dc linear Design, vol. 12, pp. 50-51, 6 July 1964. [5] M. Sapoff and R. M. Oppenheim, "Desig IEEE Conv. ...

The suitability of a natural diamond detector with a special contact system for the measurement of relative dose distributions in selected radiotherapy applications was studied. The performance of the diamond detector was analysed by comparison with measurements using an ionization chamber and a silicon diode detector. The good stability, high response and good spatial resolution of the diamond...

We present measurements at 10.6 microm that demonstrate electronic tuning of the polarization response of asymmetric-spiral infrared antennas connected to Ni-NiO-Ni diodes. Continuous variation of the bias voltage applied to the diode results in a rotation of the principal axis of the polarization ellipse of the spiral antenna. A 90 degrees tuning range is measured for a bias voltage that varie...

Ultra-wideband (UWB) radio offers low power consumption, low power spectral density, high immunity against interference, and other benefits, not only for consumer electronics, but also for medical devices. A cochlear implant (CI) is an electronic hearing apparatus, requiring a wireless link through human tissue. In this paper we propose an UWB link for a data rate of 1.2Mbps and a propagation d...

This paper presents a piezoelectric energy harvesting system demonstrating the output power enhancement when using a CMOS integrated pulsed-resonance converter (PRC) instead of a simple Schottky diode bridge rectifier. The combination of a storage capacitor, a blinking light emitting diode (LED) and a voltage detector forms a fixed voltage regulator and visualizes the output power extracted out...