An analytic inversion method, based on the anomalous diffraction approximation for nonabsorbing spherical particles, was developed to retrieve the size distribution from the optical turbidity or extinction spectrum. This method makes use of a differential Fourier cosine transform approach and provides a simple and fast inversion by means of fast Fourier transform and the Savitzky-Golay filter. The applicability of this algorithm was tested on the extinction data generated by the Mie solution. The effects of noise, modality, band limits, and data set size were analyzed by comparison with simulated data. This method can be used to reconstruct the original monomodal and bimodal distributions from 10% noise-corrupted data. The peak position and ratio of peak heights can be recovered with 10% or less deviation. The experiments with latex spheres showed that the inversion result from this method compares favorably with that from the dynamic light scattering measurement.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/AO.35.000193 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Vagus nerve stimulation rescues impaired fear extinction and social interaction in a rat model of autism spectrum disorder.
J Affect Disord
January 2025
Department of Neuroscience, School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 W Campbell Rd., Richardson, TX 75080, USA; Texas Biomedical Device Center (TxBDC), The University of Texas at Dallas, 800 W Campbell Rd., Richardson, TX 75080, USA. Electronic address:
Clinical diagnosis of anxiety disorders is highly prevalent in autism spectrum disorders (ASD). Available treatments for anxiety offer limited efficacy in the ASD population. Vagus nerve stimulation (VNS) has an anxiolytic effect in rats and, when coupled with fear extinction training, VNS enhances extinction of fear in healthy rats.
View Article and Find Full Text PDFFabrication of nanoparticles with precisely controllable plasmonic properties as tools for biomedical applications.
Nanoscale
January 2025
AIT Austrian Institute of Technology, Molecular Diagnostics, 1210 Vienna, Austria.
Metal nanoparticles are established tools for biomedical applications due to their unique optical properties, primarily attributed to localized surface plasmon resonances. They show distinct optical characteristics, such as high extinction cross-sections and resonances at specific wavelengths, which are tunable across the wavelength spectrum by modifying the nanoparticle geometry. These attributes make metal nanoparticles highly valuable for sensing and imaging in biology and medicine.
View Article and Find Full Text PDFProbing Temperature Changes Using Nonradiative Processes in Hyperbolic Meta-Antennas.
ACS Appl Opt Mater
December 2024
Department of Physics, Umeå University, Linnaeus väg 24, 901 87 Umeå, Sweden.
Multilayered metal-dielectric nanostructures display both a strong plasmonic behavior and hyperbolic optical dispersion. The latter is responsible for the appearance of two separated radiative and nonradiative channels in the extinction spectrum of these structures. This unique property can open plenty of opportunities toward the development of multifunctional systems that simultaneously can behave as optimal scatterers and absorbers at different wavelengths, an important feature to achieve multiscale control of light-matter interactions in different spectral regions for different types of applications, such as optical computing or detection of thermal radiation.
View Article and Find Full Text PDFSynthesis and Characterization of Polyimide with High Blackness and Low Thermal Expansion by Introducing 3,6-bis(thiophen-2-yl)diketopyrrolopyrrole-Based Chromophores.
Polymers (Basel)
November 2024
National and Local Joint Engineering Research Center for Advanced Packaging Materials and Technology, Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China.
The market demand for black polyimide (BPI) has grown hugely in the field of flexible copper-clad laminates (FCCLs) as a replacement for transparent yellow polyimide. The 3,6-bis(thiophen-2-yl)diketopyrrolopyrroles (TDPP) derivative is recognized for its high molar extinction coefficient. In this research, we have synthesized a diamine monomer named 3,6-bis[5-(4-amino-3-fluorophenyl)thiophen-2-yl]-2,5-bis(2-ethylhexyl)pyrrolo[4,3-c]pyrrole-1,4-dione (DPPTENFPDA), featuring a TDPP unit attached by fluorinated benzene rings.
View Article and Find Full Text PDFAg-coated Au nanostar-based Lateral Flow Immunoassay for Highly Sensitive Influenza A virus antibody Detection in Colorimetric and Surface-Enhanced Raman Scattering (SERS) modes.
Talanta
April 2025
College of Chemistry and Chemical Engineering and State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, China. Electronic address:
Antibody testing for virus aids diagnosis, promotes vaccination and development, and evaluates antibody treatment efficacy. Hence, it is essential to examine and monitor antibody levels for accurate disease diagnosis and prevention. Lateral Flow Immunoassay (LFIA) is a technique that is known for its simplicity and speed, making it a popular choice for immediate detection.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!