Review
Instruments & Instrumentation
Tianhe Yang, Weigen Chen, Pinyi Wang
Summary: This paper presents a brief review of the application of all-optical PAS in gas sensing, discussing the advantages and limitations of different technologies, and pointing out the potential advantages of optical PAS in harsh environments.
APPLIED SPECTROSCOPY REVIEWS
(2021)
Article
Optics
Chunqi Zheng, Huanzheng Zhu, Ziquan Xu, Ravindra K. Sinha, Qiang Li, Pintu Ghosh
Summary: A three-layer ultrathin film containing PDMS layer and chromium films is proposed for high optical absorption efficiency, with the ability to modulate absorption characteristics by varying the PDMS layer thickness. The PA signal generated by this film structure is stronger compared to single Cr and Au films.
Review
Chemistry, Analytical
Angelo Sampaolo, Pietro Patimisco, Marilena Giglio, Andrea Zifarelli, Hongpeng Wu, Lei Dong, Vincenzo Spagnolo
Summary: Multi-gas detection using Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) is a leading-edge technology that offers modularity, ruggedness, portability, and real-time operation. This review discusses the implementation of QEPAS for multi-gas detection in various applications, including trace sensing, overlapping absorption bands, and fluctuating backgrounds. The role of analysis and statistical tools in specific applications is also highlighted.
ANALYTICA CHIMICA ACTA
(2022)
Article
Acoustics
Xinyi Ren, Ming Yan, Zhaoyang Wen, Hui Ma, Ran Li, Kun Huang, Heping Zeng
Summary: Photoacoustic spectroscopy (PAS) using two optical combs offers broad bandwidths, high resolutions, fast acquisition speeds, and wavelength-independent detection. However, sensitivity and specificity are limited. In this study, we demonstrate comb-enabled PAS with enhanced sensitivity and nonlinear spectral hole-burning defined resolution, enabling trace detection and Doppler-free gas sensing.
Review
Food Science & Technology
Chuanqi Xie, Weidong Zhou
Summary: Traditional methods for detecting foodstuff hazards are time-consuming, inefficient, and destructive. Spectral imaging techniques, such as UV-Vis-NIR spectroscopy, THz spectroscopy, hyperspectral imaging, and Raman spectroscopy, have been proven to overcome these disadvantages. This study provides updated information on the advantages and disadvantages of these techniques, as well as the latest research on machine learning algorithms for detecting foodstuff hazards.
Review
Engineering, Electrical & Electronic
Fupeng Wang, Yaopeng Cheng, Qingsheng Xue, Qiang Wang, Rui Liang, Jinghua Wu, Jiachen Sun, Cunguang Zhu, Qian Li
Summary: This paper summarizes and discusses recent techniques for photoacoustic enhancement in gas sensing, covering the entire process from laser-molecule interaction to acoustic wave detection. Based on the theoretical principle and system composition of PAS gas sensors, the techniques are classified into three aspects, with advantages and limitations analyzed.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Review
Instruments & Instrumentation
Shuchao Wang, Marcel Hoffmann, Ali K. Yetisen, Kun Wang, Franziska Braendle, Wolfgang Kurz, Martin Jakobi, Quan Zhou, Alexander W. Koch
Summary: The detection of gas concentrations in harsh environments with high performance is an emerging research area. Photoacoustic (PA) methods based on optical interferometers are highly sensitive, immune to electromagnetic interference, and capable of non-magnetic saturation. This article reviews the principles, characteristics, and advanced technologies of PA gas-sensing methods, including various optical interferometers and the membrane-less optical microphone-photoacoustic spectroscopy (MeoM-PAS) sensing method.
APPLIED SPECTROSCOPY REVIEWS
(2023)
Article
Biochemical Research Methods
Youwei Bao, Handi Deng, Xuanhao Wang, Hongzhi Zuo, Cheng Ma
Summary: A digital breast phantom with realistic acoustic and optical properties was developed for PA imaging, allowing the creation of virtual patients with different types of masses. Experimental results demonstrate that the model is realistic, flexible, and could potentially accelerate the development of PA breast imaging technology.
BIOMEDICAL OPTICS EXPRESS
(2021)
Article
Instruments & Instrumentation
Lilia Olvera Cano, Guadalupe C. Villanueva Lopez, Evelyn Romero Mateos, Alfredo Cruz Orea
Summary: The study aimed to evaluate the relationship between glycemia and blood spectroscopic variables using photoacoustic spectroscopy in an experimental model of type 1 diabetes. Blood samples were taken weekly from male Wistar rats with or without diabetes, and the findings suggested that photoacoustic spectroscopy could reliably detect the effects of hyperglycemia on blood, potentially aiding in the study of long-term diabetes complications.
APPLIED SPECTROSCOPY
(2021)
Review
Optics
Danyang Ren, Yizhe Sun, Junhui Shi, Ruimin Chen
Summary: Photoacoustic imaging is a novel noninvasive and nonradiation imaging modality that combines the deep penetration of ultrasonic imaging with the high specificity of optical imaging. Transparent ultrasonic sensors, including optics-based, piezoelectric-based, and MEMS-based sensors, have been developed to overcome the limitations of conventional sensors and enable direct delivery of excitation light for better signal quality in photoacoustic imaging applications.
Article
Chemistry, Analytical
Theotim Lucas, Mitradeep Sarkar, Yoann Atlas, Clement Linger, Gilles Renault, Florence Gazeau, Jerome Gateau
Summary: Photoacoustic imaging systems are widely used in the biomedical community, and the development of new contrast agents is an active area of research. A calibration method has been developed to enable quantitative spectroscopy of contrast agents in vitro using conventional imaging systems. The method allows for the correction of spectral energy distribution and conversion of image amplitude, and has been demonstrated to be robust and accurate.
Article
Acoustics
Lokesh Basavarajappa, Kenneth Hoyt
Summary: A photoacoustic graphic equalization algorithm has been developed to characterize the relative size of optical absorbing aggregates. The algorithm divides the signal into different frequency bands to differentiate between different-sized optical absorbers. Results from experiments on various materials and samples show that the algorithm is able to accurately distinguish the size of optical absorbing aggregates.
Review
Optics
Zeqi Wang, Wei Tao, Hui Zhao
Summary: Photoacoustic tomography is a fast-growing biomedical imaging modality that combines rich optical contrast with a high acoustic resolution, at depths in tissues. Novel quantitative photoacoustic tomography further delivers improved quantification capabilities to produce high-accuracy concentration estimates, which has attracted substantial research interest in recent years.
Article
Biochemical Research Methods
Weiya Xie, Ting Feng, Dong Yu, Dean Ta, Liming Cheng, Qian Cheng
Summary: In this study, a novel multi-wavelength photoacoustic time-frequency spectral analysis method was introduced to evaluate changes in bone chemical composition and microstructure. The results demonstrated the potential of this method to provide a thorough noninvasive and nonradiative evaluation of bone physico-chemical information.
BIOMEDICAL OPTICS EXPRESS
(2022)
Article
Acoustics
Haoyang Lin, Huadan Zheng, Baiyang Antonio Zhou Montano, Hongpeng Wu, Marilena Giglio, Angelo Sampaolo, Pietro Patimisco, Wenguo Zhu, Yongchun Zhong, Lei Dong, Ruifeng Kan, Jianhui Yu, Vincenzo Spagnolo
Summary: This paper presents an on-beam QEPAS sensor utilizing a custom QTF as a photoacoustic transducer, demonstrating improved sensitivity for H2O and CO2 detection through optimization of AmR geometry and coupling distance. The system performance was further enhanced by adjusting the laser beam focus position.
Article
Plant Sciences
Claudia Hernandez-Aguilar, Arturo Dominguez-Pacheco, Mariana Palma Tenango, Carmen Valderrama-Bravo, Marcos Soto Hernandez, Alfredo Cruz-Orea, Jose Ordonez-Miranda
Summary: UV-C radiation affects the photoacoustic signal and surface morphology of bean seeds, while no significant impact is observed on germination and dry weight after 15 minutes of exposure. Phenolic acids and flavonoids of bean seedlings show significant differences in roots and foliage under UV-C treatment for different exposure times.
JOURNAL OF PLANT GROWTH REGULATION
(2021)
Review
Agronomy
Raul Romero-Galindo, Claudia Hernandez-Aguilar, Arturo Dominguez-Pacheco, Juan Jose Godina-Nava, Rumen Ivanov Tsonchev
Summary: The research reviewed physical methods used to alleviate the impact of drought stress on crops, including UV radiation, magnetic field application, lasers, and gamma radiation, and their effects on crop growth and development.
INTERNATIONAL AGROPHYSICS
(2021)
Article
Thermodynamics
E. Contreras-Gallegos, F. A. Dominguez-Pacheco, C. Hernandez-Aguilar, A. Bedoya, S. Alvarado, E. Marin, A. Cruz-Orea
Summary: We characterized the bio-additive from Jatropha curcas L. oil (JBA) in mineral-based oil (MBO) at different viscosities by measuring kinematic viscosity and mass density. Thermal conductivity and specific heat were obtained using thermal effusivity and thermal diffusivity, respectively. We observed a correlation between kinematic viscosity and thermal conductivity with the percentage of JBA in the blend. The results demonstrate that JBA has the potential to improve the thermal properties of MBOs and can be used as a viscosity modifier.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2022)
Article
Food Science & Technology
Claudia Hernandez-Aguilar, Mariana Palma-Tenango, Ruben San Miguel-Chavez, Arturo Dominguez-Pacheco, Marcos Soto-Hernandez, Maria del Carmen Valderrama Bravo, Rumen Ivanov, Jose Ordonez-Miranda
Summary: The study shows that UV-C radiation can alter the content of phenolic compounds in breads added with turmeric, with significant differences observed based on exposure time and turmeric concentration. Degradation of phenolic acids was seen at 30 and 60 seconds of radiation, while the highest concentrations of phenolic acids were found in breads added with 10% turmeric under 15-second radiation.
JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION
(2022)
Article
Physics, Applied
A. Dominguez-Pacheco, C. Hernandez-Aguilar, A. Cruz-Orea
Summary: Non-destructive techniques, such as photothermal techniques, can be used to characterize non-homogeneous materials with different components and thermophysical properties. In this study, the thermal imaging of six different creole corn varieties was obtained using photoacoustic microscopy (PAM), and the colorimetric parameters and statistical analysis were performed.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Agronomy
Claudia Hernandez-Aguilar, Arturo Dominguez-Pacheco, Elisa Dominguez-Hernandez, Rumen Ivanov Tsonchev, Maria Del Carmen Valderrama-Bravo, Margarita Lizeth Alvarado-Noguez
Summary: The aim of this study was to assess the effects of UV-C light on lentil and its conditioning with Spirulina. The main findings showed that lentil brightness displayed a slight variation compared to control and irradiated samples. Total flavonoids tended to increase at 10 minutes of UV-C exposure. Conditioning with UV-C and immersion in Spirulina water generated significant differences in the seedlings. UV-C radiation led to morphological changes in the lentils, damaging the protective layer and causing damage to cell walls and protein bodies.
INTERNATIONAL AGROPHYSICS
(2023)
Article
Chemistry, Physical
Margarita L. Alvarado-Noguez, Ana E. Matias-Reyes, Mario Perez-Gonzalez, Sergio A. Tomas, Claudia Hernandez-Aguilar, Flavio A. Dominguez-Pacheco, Jesus A. Arenas-Alatorre, Alfredo Cruz-Orea, Mauricio D. Carbajal-Tinoco, Jairo Galot-Linaldi, Elizabet Estrada-Muniz, Libia Vega-Loyo, Jaime Santoyo-Salazar
Summary: In this study, Curcuma longa L. extract was used to synthesize and directly coat magnetite (Fe3O4) nanoparticles with a size of around 12 nm. The nanoparticles were then modified with a surface layer of polyphenol groups to enhance their bio-applications.
Review
Clinical Neurology
Luis F. Burguete-Castillejos, Flavio A. Dominguez-Pacheco, Claudia L. Martinez-Gonzalez
Summary: Psychiatric disorders, particularly depression and anxiety, are becoming the most disabling diseases of the new era. Transcranial magnetic stimulation (TMS), a neurostimulation technique, has the potential to be an effective alternative for managing anxiety pathologies. Low-frequency stimulation has been found to be the most effective protocol for treating anxiety disorders, and repeated TMS has shown efficacy in various psychiatric disorders.
REVISTA MEXICANA DE NEUROCIENCIA
(2022)
Article
Food Science & Technology
C. Hernandez-Aguilar, A. Dominguez-Pacheco, C. Valderrama-Bravo, A. Cruz-Orea, E. Martinez Ortiz, Rumen Ivanov, J. Ordonez-Miranda
Summary: The study demonstrates that the addition of Moringa powder can increase the photoacoustic signal amplitude, improve the sanitary quality, and maintain the texture of wheat bread. There is a significant correlation between the signal at 300 and 330 nm wavelengths and the concentration of Moringa.
CURRENT RESEARCH IN FOOD SCIENCE
(2021)
Article
Multidisciplinary Sciences
Jose Ernesto Rojas-Lima, Arturo Dominguez-Pacheco, Claudia Hernandez-Aguilar, Luis Manuel Hernandez-Simon, Alfredo Cruz-Orea
Summary: Digital image processing algorithms have been developed for the characterization of agricultural products, particularly seeds, based on thermal images obtained from a thermographic camera. Different genotypes of maize seeds showed variations in brightness, contrast, and entropy values under different exposure times to laser light, providing quantitative characteristics for seed analysis.
SN APPLIED SCIENCES
(2021)
