Review
Physiology
Andrea M. Lopez-Canizales, Aracely Angulo-Molina, Adriana Garibay-Escobar, Erika Silva-Campa, Miguel A. Mendez-Rojas, Karla Santacruz-Gomez, Monica Acosta-Elias, Beatriz Castaneda-Medina, Diego Soto-Puebla, Osiris Alvarez-Bajo, Alexel Burgara-Estrella, Martin Pedroza-Montero
Summary: This article discusses the changes in the membrane of red blood cells caused by storage and irradiation, characterized using various techniques. The experimental results serve as biomarkers of cell aging and storage damage.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Food Science & Technology
Setareh Shiroodi, Michael H. Schwarz, Nitin Nitin, Reza Ovissipour
Summary: This study evaluated the impact of nanobubbles and neutral electrolyzed water on different microbial biofilms, finding that nanobubbles alone or in combination with neutral electrolyzed water could effectively remove biofilms, reduce bacterial adhesion, and show potential as a new technology to enhance the efficacy of conventional sanitizers.
FOOD AND BIOPROCESS TECHNOLOGY
(2021)
Article
Physics, Applied
Brian Douglas Rummel, Leonid Miroshnik, Marios Patriotis, Andrew Li, Talid R. Sinno, Michael David Henry, Ganesh Balakrishnan, Sang M. Han
Summary: Surface acoustic wave devices were fabricated on a GaAs (100) substrate to demonstrate the capability of 2D Raman microscopy as an imaging technique for acoustic waves on the surface of a piezoelectric substrate. An analytical model was derived to relate Raman peak broadening to the near-surface strain field of the GaAs surface produced by the surface acoustic waves, and atomic force microscopy was used to confirm the presence of a standing acoustic wave. Stress calculations for both imaging techniques were in good agreement, demonstrating the potential of this Raman analysis.
APPLIED PHYSICS LETTERS
(2021)
Review
Polymer Science
Julie L. P. Jessop
Summary: This article discusses the advantages of using Raman spectroscopy in photopolymerization systems, including flexibility and high resolution, and provides examples to illustrate how Raman spectroscopy can be used to monitor photopolymerization reactions and understand the impact of monomer chemistry and processing conditions.
Article
Pharmacology & Pharmacy
Sara Fateixa, Helena I. S. Nogueira, Tito Trindade
Summary: Raman imaging with cluster analysis was used to investigate structural and chemical transformations in carbamazepine polymorphs induced by temperature changes, allowing the identification of different polymorphs and degradation products.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2022)
Article
Environmental Sciences
Wanying He, Minxiao Wang, Mengna Li, Zhaoshan Zhong, Hao Chen, Shichuan Xi, Zhendong Luan, Chaolun Li, Xin Zhang
Summary: This study investigated the effect of four common preservation methods on the results of confocal Raman microscopy (CRM) imaging and signals using deep-sea mussels as a model. The results showed that snap-freeze was the most effective method for comprehensive analysis of biomolecular composition, while snap-freeze followed by rapid fixation in methanol was effective in obtaining good morphology in sections. Glutaraldehyde and paraformaldehyde fixation methods were found to be the most effective for overall morphological observation, but less suitable for metabolic studies.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Biochemical Research Methods
Aaron Doug Deen, Heleen M. M. Van Beusekom, Tom Pfeiffer, Mathijs Stam, Dominique De Kleijn, Jolanda Wentzel, Robert Huber, Antonius F. W. Van der Steen, Gijs Van Soest, Tianshi Wang
Summary: Spectroscopic Thermo-elastic Optical Coherence Tomography (TE-OCT) is a label-free, free-space imaging technique that provides dual contrast in optical imaging. By using short laser pulses to induce tissue deformation and measuring the resulting surface displacement, TE-OCT creates images based on optical reflectance and thermo-elastic deformation, allowing for the identification of tissue components through spectroscopic analysis.
BIOMEDICAL OPTICS EXPRESS
(2022)
Article
Engineering, Chemical
Maximilian Maier, Dunia Abbas, Miriam Komma, Muhammad Solihul Mu'min, Simon Thiele, Thomas Bohm
Summary: This study investigates the application-relevant properties of perfluorinated sulfonic acid (PFSA) membranes using confocal Raman microscopy. The study analyzes the differences in Raman bands and intensity versus equivalent weight, and characterizes ionomer properties such as swelling and water uptake. It also demonstrates the capability of confocal Raman microscopy to characterize composite membranes and resolve individual phases and features.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Sachin Nair, Jun Gao, Cees Otto, Michael H. G. Duits, Frieder Mugele
Summary: By using 3D Confocal Raman Microscopy, it was found that the surfactant layer is stable at high salinities, leading to preferential oil wetting. Upon reducing the ambient brine salinity, this layer decomposes and the surfaces become more water wet. The surfactant is found to partly dissolve in the oil and partly precipitate at the oil-water interface.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Agricultural Engineering
Tianfeng Liu, Yuxin Liu, Yunlin Fu, Mengji Qiao, Penglian Wei, Zhigao Liu, Yingjian Li
Summary: This study explored the formation mechanism of agarwood induced by fungus and its potential application in high-quality and high-yielding agarwood production. The results showed that the transition layer played a critical role in the continuous accumulation of agarwood, and the parenchyma cells of the xylem rays and interxylary phloem were the main action site of fungus. The accumulation and distribution of chemical composition in different layers were also investigated. The study identified the drivers of specific compounds and provided a theoretical foundation for future agarwood production.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Anatomy & Morphology
Heitor Hussni Casarin, Vicente Silva Mattos, Jarbas Caiado de Castro Neto, Michelle Alexandra Chinelatti
Summary: The study evaluated the chemical and morphological changes of femtosecond laser-irradiated enamel using Raman spectroscopy, CLSM, and SEM. Results showed a significant decrease in carbonate content and carbonate/phosphate ratio in enamel after laser irradiation, without altering its structure and morphology.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Acoustics
Jing Qian, Fengbin Zhao, Jingjing Gao, LiJie Qu, Zhengbin He, Songlin Yi
Summary: Ultrasound-water, alkali, and ultrasound-alkali treatments were found to remove extractives from conduits of wood cell walls, resulting in uniform self-shrinking samples with changes in chemical components. The relative content of hemicellulose decreased significantly in ultrasound-8% NaOH treated samples, and the signal intensity of lignin showed more reductions in ultrasound-water and ultrasound-alkali treated samples. The cellulose crystallinity increased notably in ultrasound-assisted treated samples.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Polymer Science
Claudia Leimhofer, Alexander Hammer, Wolfgang Roland, Saskia Dollberger, Timo Ehrmann, Gerald Berger-Weber, Sabine Hild
Summary: When two compatible polymer melts come into contact, a diffuse interphase forms and controls the adhesion between them. Interdiffusion is mainly determined by processing conditions and physico-chemical properties. This study investigated interdiffusion under co-extrusion flow conditions and found that shear influence significantly increases the interdiffusion rate. A simple analytical model was developed to quantify the effects of material properties and processing conditions on the apparent mutual interdiffusion coefficient.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Spectroscopy
Rodrigo Demoor, Valentin Guarepi, Adrian Cisilino, Vera Alvarez, J. Pablo Tomba
Summary: This work presents a method to characterize the effective diffusivity of barrier membranes to mass transport, using membranes with controlled microstructures and Raman mapping to study the influence of holes on mass transport. Results show that holes act as barriers to mass transport and reduce the effective diffusion coefficient of the penetrant molecule. Raman measurements provide valuable data to contrast theoretical models of mass transport in heterogeneous barrier membranes.
JOURNAL OF RAMAN SPECTROSCOPY
(2021)
Article
Biotechnology & Applied Microbiology
Maria Belen Estevez, Maria Laura Casaux, Martin Fraga, Ricardo Faccio, Silvana Albores
Summary: Infectious diseases are a major global health issue, primarily due to the development of multi-resistant microorganisms. Salmonella enterica, particularly Salmonella Typhimurium, poses a significant threat to cattle and humans, highlighting the importance of finding alternative therapeutic approaches.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
