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Applied Sciences
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Surface Technology: Laser in Trace Analysis and Precision Measurements
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Surface Technology: Laser in Trace Analysis and Precision Measurements

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Surface Sciences and Technology".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 5278

Special Issue Editors

Dr. Chen Chen

E-Mail Website
Guest Editor
College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130061, China
Interests: infrared laser spectroscopy and sensing system
Prof. Dr. Guang Yang

E-Mail Website
Guest Editor
College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130061, China
Interests: laser spectrum analysis instrument, measurement and control technology and networking of analytical instruments and electronic metrology

Special Issue Information

Dear Colleagues,

We are inviting submissions to the Special Issue on Laser Application in Trace Analysis and Precision Measurements. Through the interaction of laser with molecules, atoms, and nucleus, the trace analysis and precision measurements technologies of physical and chemical material are formed, which have great application prospects in the frontier fields of biology, geology, energy, environment, space, and so on. In recent years, facing the new requirement brought by the development of advanced manufacturing of precision measurement, scientific research institutions have engaged in in-depth scientific researches on common issues of principle and method for measuring system. In addition, in the field of laser application, the breakthroughs on trace analysis and precision measurements formed novelty measuring theory, method, and instrument. In order to promote academic exchange and innovation development, the journal of Applied Sciences plans to publish the topic of "Laser Application in Trace Analysis and Precision Measurements". In this Special Issue, we invite submissions exploring cutting-edge research and recent advances in the fields of laser application in trace analysis and precision measurements. Both theoretical and experimental studies (including applications) are welcome, as well as comprehensive review papers. 

Dr. Chen Chen
Prof. Dr. Guang Yang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • new theory and principle
  • method and technology
  • key component development
  • measuring instrument
  • data evaluation and processing
  • laser application

Published Papers (4 papers)

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Research

17 pages, 5387 KiB  
Article
Capability Enhancing of CO2 Laser Cutting for PMMA Sheet Using Statistical Modeling and Optimization
by Mahmoud Moradi, Mohammad Rezayat, Saleh Meiabadi, Mojtaba Karamimoghadam, Stephen Hillyard, Antonio Mateo, Giuseppe Casalino, Zammad Tanveer, Muhammad Adnan Manzoor, Muhammad Asad Iqbal and Omid Razmkhah
Appl. Sci. 2023, 13(23), 12601; https://doi.org/10.3390/app132312601 - 22 Nov 2023
Viewed by 713
Abstract
Laser cutting is a widely used manufacturing process, and the quality of the resulting cuts plays a crucial role in its success. This research employed the Design of Experiments (DOE) to investigate the impact of input process parameters on kerf quality during the [...] Read more.
Laser cutting is a widely used manufacturing process, and the quality of the resulting cuts plays a crucial role in its success. This research employed the Design of Experiments (DOE) to investigate the impact of input process parameters on kerf quality during the laser cutting of 5 mm polymethyl methacrylate (PMMA) sheets. Response surface methodology (RSM) was utilized to model the relationship between the input parameters and the kerf quality, with regression equations developed for each response using the Design Expert software. A statistical analysis revealed the significant effects of high laser power, cutting speed, and focal plane position on kerf quality. Optimization, guided by the desirability function, identified optimal parameter combinations that offered the most favorable tradeoff among various responses. Optimal conditions were found to involve a high laser power, a cutting speed ranging from 4 to 7 mm/s, and a focal plane position at the center. Experiments indicated the suitability of the models for practical applications. An overlay plot analysis revealed a weak negative correlation between the laser power and the cutting speed, while the focal plane’s position could be adjusted independently. Full article
(This article belongs to the Special Issue Surface Technology: Laser in Trace Analysis and Precision Measurements)
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16 pages, 2860 KiB  
Article
Polarization Transmission of Visible Light in Inhomogeneous Sea Fog Particle Environment
by Juntong Zhan, Shicheng Bao, Su Zhang, Yingchao Li, Qiang Fu, Jin Duan and Wei Zhang
Appl. Sci. 2023, 13(2), 905; https://doi.org/10.3390/app13020905 - 09 Jan 2023
Viewed by 1069
Abstract
Sea fog is a weather phenomenon suspended in the ocean-atmosphere boundary layer. This phenomenon makes the horizontal visibility of the sea atmosphere less than 1 km. Sea fog reduces sea surface visibility. Moreover, the inhomogeneous sea fog particles in the transmission channel result [...] Read more.
Sea fog is a weather phenomenon suspended in the ocean-atmosphere boundary layer. This phenomenon makes the horizontal visibility of the sea atmosphere less than 1 km. Sea fog reduces sea surface visibility. Moreover, the inhomogeneous sea fog particles in the transmission channel result in the absorption and scattering of photons, which seriously affect the performance of optical detection instruments. Polarization imaging detection can solve this problem. However, the evolution law of transmission characteristics between polarized light and inhomogeneous sea fog particles remains unclear. Therefore, we use the equivalent analysis method to improve Monte Carlo, and finally construct the inhomogeneous particle scattering model. The influence of wavelength and relative humidity on DOP (Degree of Polarization) was calculated by the model. The simulated sea fog was created using brine with a preset concentration, and then established an experimental system close to the actual sea fog environment. Indoor polarized light transmission experiments verified the inhomogeneous particle scattering model. Results showed that the accuracy of the inhomogeneous particle scattering model can reach more than 75%. In the visible band, the DOP decreases with the wavelength increase. DOP450 (Degree of Polarization at 450nm wavelength) is approximately 3–10% higher than DOP532, and DOP532 is approximately 5% higher than DOP671. The relative humidity increases from 45% to 85%, and DOP increases by 10–15%. Therefore, in the visible band, the wavelength and relative humidity are inversely proportional to DOP. Full article
(This article belongs to the Special Issue Surface Technology: Laser in Trace Analysis and Precision Measurements)
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11 pages, 3657 KiB  
Article
Laser Spot Centering Algorithm of Double-Area Shrinking Iteration Based on Baseline Method
by Haili Zhao, Shuzhen Wang, Wen Shen, Wenbo Jing, Lijie Li, Xuan Feng and Weiyin Zhang
Appl. Sci. 2022, 12(21), 11302; https://doi.org/10.3390/app122111302 - 07 Nov 2022
Cited by 2 | Viewed by 1463
Abstract
High-precision laser spot center detection occupies an important position in optical measurement technology. In this paper, we propose a laser spot centering method to improve positioning accuracy. This method is an iterative double-area shrinkage approach based on the baseline method. The background noise [...] Read more.
High-precision laser spot center detection occupies an important position in optical measurement technology. In this paper, we propose a laser spot centering method to improve positioning accuracy. This method is an iterative double-area shrinkage approach based on the baseline method. The background noise baseline is calculated from the noise statistics of multiple background image frames acquired, and then the background noise is subtracted during the calculation while retaining the effective information of the spot region. The real spot area is located in the end by double-area shrinkage iteration to calculate the position of the spot center. Simulation and experimental results showed that our proposed method has strong anti-background noise interference ability, as well as higher positioning accuracy in locating the spot center than commonly used approaches; the maximum localization accuracy could reach 0.05 pixels, meeting the real-time requirements of the algorithm. The fluctuation range of measurement results was small when continuously detecting the center of the same laser spot, which could reach 0.04 and 0.03 pixels in the x- and y-directions, respectively. The result indicates that the method can meet the requirements of laser high-precision positioning. Full article
(This article belongs to the Special Issue Surface Technology: Laser in Trace Analysis and Precision Measurements)
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18 pages, 5639 KiB  
Article
Design of a Laser Driver and Its Application in Gas Sensing
by Menglong Cong, Shanshan Zhang, Yiding Wang, Dachao Liang and Kunpeng Zhou
Appl. Sci. 2022, 12(12), 5883; https://doi.org/10.3390/app12125883 - 09 Jun 2022
Cited by 1 | Viewed by 1489
Abstract
A laser driver which features high stability and a graphical user-interface was designed and used in trace gas sensing. The running of the laser driver was managed by an ARM processor which was embedded with a real-time operating system (RTOS). Through clicking on [...] Read more.
A laser driver which features high stability and a graphical user-interface was designed and used in trace gas sensing. The running of the laser driver was managed by an ARM processor which was embedded with a real-time operating system (RTOS). Through clicking on the touch screen that was configured with an emWin graphical user-interface (GUI), the parameters of the driving current can be graphically set and monitored. The circuit model of the distributed feedback laser diode (DFB-LD) was introduced into a TINA-SPICE simulation to evaluate the performance of the current source. Through simulation, the potential self-oscillation can be visually predicted, and the feedback loop can be appropriately compensated. To validate the applicability, the laser driver was used for driving a carefully selected DFB-LD and was employed in wavelength modulation spectroscopy (WMS) for CH4 detection at R(3) absorption line of the 2ν3 overtone. Under the conditions of room temperature, normal pressure and an effective absorption path of 15.4 cm, repetitive experiments were conducted using gas samples, with their concentrations ranging from 400 ppm to 1%, and the detection limit derived from the signal-to-noise ratio (SNR) was 7.2 ppm. The promising result indicates the high potential of this laser driver for use in absorption spectrum-based sensing applications. Full article
(This article belongs to the Special Issue Surface Technology: Laser in Trace Analysis and Precision Measurements)
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