A Comprehensive Examination of Voltammetric Parameters in Fourier Transform Sine‐Wave Voltammetry (FT‐SWV) Leading to Concentration Linearity and High Signal‐to‐Background Ratio

2021 ◽  
Author(s):  
Yejin Yang ◽  
Stephen Weber
Keyword(s):  
Fourier Transform ◽  
Sine Wave ◽  
High Signal ◽  
Background Ratio ◽  
Wave Voltammetry ◽  
Comprehensive Examination

Efficient red luminogen with aggregation-induced emission for in vivo three-photon brain vascular imaging

2020 ◽  
Vol 4 (6) ◽  
pp. 1634-1642 ◽  
Author(s):  
Haiyan Tian ◽  
Dongyu Li ◽  
Xi Tang ◽  
Yubo Zhang ◽  
Zhiyong Yang ◽  
...  
Keyword(s):  
High Resolution ◽  
Penetration Depth ◽  
Vascular Imaging ◽  
Quantum Yields ◽  
High Signal ◽  
Aggregation Induced Emission ◽  
Background Ratio ◽  
High Quantum

DCPE-TPA exhibits three morphologies with high quantum yields and nanoparticles of DCPE-TPA are utilized for in vivo 3PF imaging, achieving a penetration depth of 300 μm with a high resolution of 1.8 μm and a high signal-to-background ratio of 14.

A novel two-photon fluorescent probe with a long Stokes shift and a high signal-to-background ratio for human NAD(P)H:quinone oxidoreductase 1 (hNQO1) detection and imaging in living cells and tissues

The Analyst ◽  
2017 ◽  
Vol 142 (14) ◽  
pp. 2624-2630 ◽  
Author(s):  
Dan Pan ◽  
Fengyan Luo ◽  
Xianjun Liu ◽  
Wei Liu ◽  
Wen Chen ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Stokes Shift ◽  
Living Cells ◽  
High Signal ◽  
Background Ratio ◽  
Two Photon

We have developed a novel TPE fluorescent probe (Q3CA-P), with a long Stokes shift and a high signal-to-background ratio, for hNQO1 detection and imaging.

scholarly journals Square or Sine: Finding a Waveform with High Success Rate of Eliciting SSVEP

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Fei Teng ◽  
Yixin Chen ◽  
Aik Min Choong ◽  
Scott Gustafson ◽  
Christopher Reichley ◽  
...  
Keyword(s):  
Success Rate ◽  
Visual Evoked Potential ◽  
Transmission Rate ◽  
Electrical Potential ◽  
Sine Wave ◽  
High Success Rate ◽  
High Signal ◽  
Effective Stimulus ◽  
Duty Cycles

Steady state visual evoked potential (SSVEP) is the brain's natural electrical potential response for visual stimuli at specific frequencies. Using a visual stimulus flashing at some given frequency will entrain the SSVEP at the same frequency, thereby allowing determination of the subject's visual focus. The faster an SSVEP is identified, the higher information transmission rate the system achieves. Thus, an effective stimulus, defined as one with high success rate of eliciting SSVEP and high signal-noise ratio, is desired. Also, researchers observed that harmonic frequencies often appear in the SSVEP at a reduced magnitude. Are the harmonics in the SSVEP elicited by the fundamental stimulating frequency or by the artifacts of the stimuli? In this paper, we compare the SSVEP responses of three periodic stimuli: square wave (with different duty cycles), triangle wave, and sine wave to find an effective stimulus. We also demonstrate the connection between the strength of the harmonics in SSVEP and the type of stimulus.

scholarly journals Contribution of an interharmonic component to the sine-wave parameters estimators returned by the interpolated Discrete Fourier transform algorithm

ACTA IMEKO ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 17
Author(s):  
Daniel Belega ◽  
Dario Petri ◽  
Dominique Dallet
Keyword(s):  
Fourier Transform ◽  
Discrete Fourier Transform ◽  
Small Amplitude ◽  
Sine Wave ◽  
Wave Parameter ◽  
Phase Estimation ◽  
Estimation Errors ◽  
The Impact ◽  
Parameter Estimators ◽  
Analytical Expressions

<p class="Abstract">This article investigates the contribution of a small-amplitude interharmonic component to the sine-wave parameter estimators returned by the classical interpolated discrete Fourier transform (IpDFT) algorithm. The analytical expressions for the frequency, amplitude, and phase estimation errors are derived herein by considering the IpDFT algorithm based on the maximum sidelobe decay (MSD) windows and by assuming the interharmonic frequency located at least one bin apart the unknown sine-wave frequency. The derived expressions allow us to analyse the impact of an interharmonic on the accuracies of the IpDFT frequency, amplitude, and phase estimators. The accuracies of the derived expressions are verified by means of both computer simulations and experimental results.</p>

Sign in / Sign up

Export Citation Format

Share Document