High‐intensity focused ultrasound (HIFU) ablation by the frequency chirps: Enhanced thermal field and cavitation at the focus
Sign Up to like & getrecommendations! Published in 2019 at "Ultrasonics"
DOI: 10.1016/j.ultras.2018.08.017
Abstract: HighlightsFrequency chirps don’t affect the average acoustic field.Stronger bubble expansion and cavitation‐enhanced heating could be generated.Lesion production is enhanced in both gel phantom and ex vivo tissue samples.Such enhancement is preferable for large frequency sweeping… read more here.
Keywords: hifu; cavitation; frequency sweeping; frequency ... See more keywords
Modeling of frequency-sweeping Alfvén modes in the TJ-II stellarator
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DOI: 10.1088/1741-4326/ad1c93
Abstract: Alfvénic activity has been observed in the TJ-II stellarator which resembles the frequency sweeping demonstrated by Alfvén cascade modes in tokamaks. A numerical validation study was conducted using a reduced magnetohydrodynamic (MHD) model to show… read more here.
Keywords: rotational transform; frequency sweeping; transform profile; modeling frequency ... See more keywords
A Method Based on Time-Scale Factor for Correcting the Nonlinear Frequency Sweeping in an OFDR System
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DOI: 10.1109/jphot.2019.2919775
Abstract: A data processing method for correcting the frequency sweeping nonlinearity of a tunable laser in an optical frequency domain reflectometry system is presented. The proposed method calibrates the positions of all the data points by… read more here.
Keywords: frequency sweeping; system; frequency; method ... See more keywords
Dynamic Sideband-Calibrated Frequency-Sweeping Interferometry for Absolute Distance Measurement
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DOI: 10.1109/tim.2025.3562978
Abstract: A novel frequency-sweeping interferometric method with dynamic sideband calibration for absolute distance measurement (ADM) is proposed in this article. The beam of a reference laser is modulated using a high-frequency electro-optical phase modulator (HEOPM) to… read more here.
Keywords: inline formula; dynamic sideband; sideband; tex math ... See more keywords
High Ranging Accuracy and Wide Detection Range Interferometry Based on Frequency-Sweeping Technique With Vital Sign Sensing Function
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Microwave Theory and Techniques"
DOI: 10.1109/tmtt.2018.2854177
Abstract: In this paper, an interferometry-based frequency-sweeping technique has been developed and demonstrated. With this approach, the distance ambiguity problem in the traditional interferometer is solved. The relationship involving the used carrier number, noise and standing… read more here.
Keywords: detection; frequency sweeping; frequency; interferometry based ... See more keywords
Phase noise elimination in frequency sweeping interferometry based on a common-path interferometer.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.468996
Abstract: We propose a common-path interferometer (CPI) method to suppress the ambient and laser phase noise in frequency sweeping interferometry. The CPI realizes the multiplexing of the main and auxiliary interferometer to ensure the common-mode characteristic… read more here.
Keywords: path interferometer; interferometer; frequency sweeping; phase noise ... See more keywords