Results 21 to 30 of about 3,353,562 (125)
Actuators, 2023 As human–computer interaction has become increasingly popular, haptic technology has become a research topic of great interest, since vibration perception, as a type of haptic feedback, can enhance user experience during an interaction. However, the high
Rui Ye +3 more
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Refractive-index-sensing radio-frequency comb with intracavity multi-mode interference fibre sensor [PDF]
Optics Express Vol. 26, Issue 15, pp. 19694-19706 (2018), 2018 Optical frequency combs have attracted attention as optical frequency rulers due to their tooth-like discrete spectra together with their inherent mode-locking nature and phase-locking control to a frequency standard. Based on this concept, their applications until now have been demonstrated in the fields of optical frequency metrology and optical ...
arxiv +1 more source
Technologies, 2021 This paper presents a comparative study between two different implementations of digitally-controlled-oscillators (DCOs), whcih is the DAC-based and the digital controller-based DCO in TSMC 65 nm CMOS technology.
Santthosh Selvaraj +2 more
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Optical frequency synthesis and measurement using fibre-based femtosecond lasers [PDF]
Eur. Phys. J. D 48, 27-33 (2008), 2008 We report the synthesis and measurement of an ultra-precise and extremely stable optical frequency in the telecommunications window around 1543 nm. Using a fibre-based femtosecond frequency comb we have phase-stabilised a fibre laser at 194 THz to an optical frequency standard at 344 THz, thus transferring the properties of the optical frequency ...
arxiv +1 more source
Nanomaterials, 2022 In this study, we propose a miniaturized bandpass filter (BPF) developed by combining an approximate circular (36-gon) winding inductor, a circinate capacitor, and five air-bridge structures fabricated on a gallium arsenide (GaAs) substrate using an ...
Jian Chen +6 more
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Time-Frequency Transformer: A Novel Time Frequency Joint Learning Method for Speech Emotion Recognition [PDF]
arXiv, 2023 In this paper, we propose a novel time-frequency joint learning method for speech emotion recognition, called Time-Frequency Transformer. Its advantage is that the Time-Frequency Transformer can excavate global emotion patterns in the time-frequency domain of speech signal while modeling the local emotional correlations in the time domain and frequency
arxiv
Evaluation of inactivation of bovine coronavirus by low-level radiofrequency irradiation
Scientific Reports, 2023 Inactivation of influenza A virus by radiofrequency (RF) energy exposure at levels near Institute of Electrical and Electronics Engineers (IEEE) safety thresholds has been reported.
Jody C. Cantu +9 more
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Non-Invasive Determination of the Mass Flow Rate for Particulate Solids Using Microwaves
Sensors, 2023 This paper presents a novel technique for the mass flow rate determination of particulate solids called the “Sliding Mass Technique”. The mass flow rate is a measure of the mass of a substance that passes through a given cross-sectional area per unit ...
Amrit Zoad +2 more
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Low frequency phase signal measurement with high frequency squeezing [PDF]
, 2011 We calculate the utility of high-frequency squeezed-state enhanced two-frequency interferometry for low-frequency phase measurement. To use the high-frequency sidebands of the squeezed light, a two-frequency intense laser is used in the interferometry instead of a single-frequency laser as usual.
arxiv +1 more source
Erasing Distinguishability Using Quantum Frequency Up-Conversion [PDF]
Phys. Rev. Lett. 101, 173901 (2008), 2008 The frequency distinguishability of two single photons was successfully erased using single photon frequency up-conversion. A frequency non-degenerate photon pair generated via spontaneous four-wave mixing in a dispersion shifted fiber was used to emulate two telecom-band single photons that were in the same temporal mode but in different frequency ...
arxiv +1 more source