Magnetic Resonance Force Microscopy can enable nanoscale imaging of spin lifetime. We report temperature dependent measurements of the spin correlation time τm of the statistical fluctuations of the spin polarization—the spin noise—of ensembles containing ∼ 100 electron spins by this technique. Magneto-mechanical relaxation due to spin-cantilever coupling was controlled and spurious mechanisms ...

A switch-embedded opamp-sharing multiplying digital-to-analogue converter (MDAC) with dual-input-differential-pair operational transconductance amplifier (OTA) is proposed to eliminate the non-resetting and successive-stage crosstalk problems in the conventional opampsharing technique. A 10-bit 80 MS/s pipelined analogue-to-digital converter (ADC) is implemented in a 0.18 mm CMOS process by usi...

Phase-resolved Doppler optical coherence tomography has been used to image blood flow dynamics in various tissues using both time-domain and spectral-domain optical coherence tomography techniques. In this manuscript, we present phase-resolved Doppler imaging with a high-speed optical frequency domain imaging system. We demonstrate that by correcting for spurious timing-induced phase errors, ex...

background and aim: digits are suitable materials for hearing assessment of wide range of patients including children and adults with various language abilities. single monosyllabic 1-10 digits in triplet formant have been used for measuring speech recognition threshold in signal-to-noise ratio. the purpose of this study was to determine signal-to-noise ratio (snr) needed for 50 percent correct...

Several easily implemented devices for doing ultrasensitive optical measurements with noisy lasers are presented. They are all-electronic noise cancellation circuits that largely eliminate excess laser intensity noise as a source of measurement error and are widely applicable. Shot-noise-limited optical measurements can now easily be made at baseband with noisy lasers. These circuits are especi...

This paper presents a 12-bit 2.32 GS/s time-interleaved pipelined/successive-approximation register (SAR) hybrid analog-to-digital converter (ADC) implemented in 28 nm CMOS. To achieve high-linearity at several GS/s, pseudo-differential push-pull input buffer with floating-body technique is proposed. A pipelined/SAR architecture dual-channel sampling multiplying digital-to-analog (MDAC) and one...

this paper presents a wireless surface acoustic wave (SAW) pressure sensor on 41YX LiNbO3 for tire pressure monitoring system (TPMS) application, in which a reflective delay line composed of an interdigital transducer (IDT) and several reflectors was used as the sensor element. Using the coupling of modes (COM), the SAW reflective delay line was simulated, and the optimal design parameters were...

This paper proposed a correlation based method using the autocorrelation function and the YIN. The autocorrelation function and also YIN is a popular measurement in estimating fundamental frequency in time domain. The performance of these two methods, however, is effected due to the position of dominant harmonics (usually the first formant) and the presence of spurious peaks introduced in noisy...

A set of low-power techniques is proposed to realize low power design in pipeline analog-to-digital converter (ADC). These techniques include removing the active S/H (i.e., SHA-less), sharing the opamp between the adjacent multi-bit-per-stages, low-power high-efficiency high-swing amplifier technique. Also, a new sampling topology is proposed to minimize aperture error by matching the time cons...