Article
Materials Science, Characterization & Testing
Pinbo Huang, Shengli Xie, Zhanxi Cao, Zihao Ni, Bo Dong, Yulei Bai
Summary: This study proposes a method for measuring the strain field of PMMA sheets using phase-contrast optical coherence tomography. The results show that the strain fields of PMMA sheets are non-uniform, with stress concentration occurring at defects, and the Poisson's ratio of PMMA is 0.35-0.37.
Article
Multidisciplinary Sciences
Min-Su Kim, Ki-Yup Nam, Young Hoon Hwang, Min-Woo Lee, Woo-Hyuk Lee, Hyung-Bin Lim, Jung-Yeul Kim
Summary: It was found that Weiss ring located near the optic disc can affect the measurement of peripapillary retinal nerve fiber layer (pRNFL) thickness, especially in the inferior quadrant and average values. Therefore, it is important to consider the presence of Weiss ring when analyzing pRNFL thickness.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Yusi Miao, Mahsa Siadati, Jun Song, Da Ma, Yifan Jian, Mirza Faisal Beg, Marinko Sarunic, Myeong Jin Ju
Summary: The article presents a coherent buffer averaging technique for megahertz-rate retinal imaging to improve OCTA contrast, demonstrating a 10-fold increase in phase alignment among buffers. This method provides better OCTA contrast than conventional approaches with a faster acquisition time.
Article
Microbiology
Luisa Gierl, Harald Horn, Michael Wagner
Summary: Experiments showed that the addition of Fe2+ significantly influenced biofilm development and structure, with a positive correlation between Fe2+ inflow concentration and biofilm accumulation. Biofilms grew approximately four times thicker at higher Fe2+ inflow concentrations, indicating a higher stability of Bacillus subtilis biofilms under elevated Fe2+ concentrations.
Article
Medicine, General & Internal
Thanh-Tin P. Nguyen, Shuibin Ni, Guangru Liang, Shanjida Khan, Xiang Wei, Alison Skalet, Susan Ostmo, Michael F. Chiang, Yali Jia, David Huang, Yifan Jian, J. Peter Campbell
Summary: OCT has changed the standard of care for macular diseases in adults, but commercially available systems have a narrow FOV limiting their application to peripheral pathologies; OCT-based evaluation can improve diagnosis of all types of retinal detachment.
FRONTIERS IN MEDICINE
(2022)
Article
Biochemical Research Methods
Nhan Le, Harrison Cheng, Hrebesh Subhash, LaTonya Kilpatrick-Liverman, Ruikang K. Wang
Summary: This article presents a case study tracking the resolution of gingivitis over 10 days, utilizing OCT and LIAF technologies. It was found that OCT and LIAF can distinctly capture changes during gingivitis resolution, with evidence of angiogenesis in the acute inflammatory region. Gingival thickness and vessel numbers showed significant changes during the resolution of inflammation.
JOURNAL OF BIOPHOTONICS
(2021)
Article
Optics
Kentaro Saeki, Decai Huyan, Mio Sawada, Akira Nakamura, Shin Kubota, Kenji Uno, Kazuhiko Ohnuma, Tatsuo Shiina
Summary: A study was conducted on measuring special shaped contact lenses using a time-domain optical coherence tomography device. An algorithm combined with sphere fitting was proposed for shape, thickness, and curvature radius estimation. The accuracy was verified using simulated data, and evaluation of a toric-shaped mold was done by comparing coordinates and intensity of interference signals.
Article
Dentistry, Oral Surgery & Medicine
Mariana Maciel Batista Borges, Rene J. B. Dijkstra, Flaviana Bombarda de Andrade, Marco Antonio Hungaro Duarte, Michel Versluis, Lucas W. M. van der Sluis, Xenos Petridis
Summary: Increasing NaOCl concentration led to higher biofilm removal and disruption, increased rate of biofilm loss and disruption, and more bubble formation. Mixing HEDP with NaOCl delayed the antibiofilm action of NaOCl without compromising its efficacy.
INTERNATIONAL ENDODONTIC JOURNAL
(2022)
Article
Biochemical Research Methods
Ai Ping Yow, Bingyao Tan, Jacqueline Chua, Rahat Husain, Leopold Schmetterer, Damon Wong
Summary: The study introduces a method that automatically segregates neuronal and vascular components in the circumpapillary RNFL using OCTA and OCT data. Results show that the ratio of major- and micro-vessels to RNFL thickness has a stronger correlation with aging, and excluding blood vessels from measurements can improve the quantification of neuronal components.
BIOMEDICAL OPTICS EXPRESS
(2021)
Article
Materials Science, Textiles
Metin Sabuncu, Hakan Ozdemir
Summary: The paper discusses the use of optical coherence tomography (OCT) imaging technique for contactless measurement of woven fabric thickness. Results show that OCT imaging can measure fabric thickness in a non-destructive and non-contact manner.
JOURNAL OF THE TEXTILE INSTITUTE
(2022)
Article
Physics, Applied
Shiqing Wu, Jing Li, Chao Tao, Xiaojun Liu
Summary: A transmission-mode photoacoustic microscope was developed to achieve quantitative images of two molecular components in tissues. By scanning the specimen once with a single-wavelength laser, a linear equation system was proposed to describe the relationship between signal magnitude and molecular concentrations. This method accurately quantifies concentrations and reveals gradients in mixtures, providing a potential solution to limitations of multiple excitations.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Zunyue Zhang, Yi Wang, Jiarui Wang, Dan Yi, David Weng U. Chan, Wu Yuan, Hon Ki Tsang
Summary: In this study, a compact integrated scanning spectrometer is proposed, which utilizes a tunable micro-ring resonator and a single arrayed waveguide grating to achieve wide optical bandwidths and high spectral resolutions. The integrated spectrometer with germanium photodetectors demonstrates excellent performance.
PHOTONICS RESEARCH
(2022)
Article
Biochemical Research Methods
Ke Li, Bin Liu, Zaifan Wang, Yao Li, Hui Li, Shulian Wu, Zhifang Li
Summary: In this study, a non-invasive method utilizing Mueller matrix optical coherence tomography (Mueller matrix OCT) and deep learning is presented for quantitative characterization of zebrafish organ development. 3D images of zebrafish were obtained using Mueller matrix OCT, and a deep learning based U-Net network was applied for organ segmentation and volume calculation. The results revealed steady growth trends in the volume development of zebrafish body and individual organs, with successful quantification of smaller organs such as the spine and swim bladder. This approach offers a more intuitive and efficient monitoring method for clinical medicine and developmental biology studies.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Optics
Wenxin Zhang, Zhengyu Chen, Xiao Zhang, Chengming Wang, Bin He, Ning Liu, Yangkang Wu, Yuxiu Tao, Ning Zhang, Ping Xue
Summary: In this paper, we propose a novel technique to measure fiber dispersion without the need for any derivative operation or index measurement. By utilizing the relationship between dispersion and the signal in optical computing optical coherence tomography, dispersion can be accurately deduced from the position and resolution of the optical computing OCT signal. The measured group velocity dispersion and third order dispersion of single mode fiber and dispersion compensating fiber with lengths ranging from 10 m to 10 km are found to be in good agreement with the nominal value.
Article
Optics
Jianan Fang, Kun Huang, E. Wu, Ming Yan, Heping Zeng
Summary: This article introduces an infrared 3D imaging system capable of detecting three-dimensional structure and reflectivity information. The system operates at single-photon sensitivity and femtosecond timing resolution, enabling imaging under low-light conditions. By nonlinear frequency upconversion and recording with a silicon camera, the presented system achieves high lateral and depth resolutions for 3D reconstruction. Additionally, a numerical denoiser based on spatiotemporal correlation allows the retrieval of object profile and reflectivity even with a detected flux below 0.05 photons/pixel/second. This infrared 3D imager features high detection sensitivity, precise timing resolution, and wide-field operation, offering new possibilities in life and material sciences.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Energy & Fuels
Afsaneh Fakhar, Morteza Sadeghi, Mohammad Dinari, Rob Lammertink
Summary: The present study investigated the use of poly(urethane urea)s membranes with aromatic and aliphatic side chains of different sizes for the separation of higher hydrocarbons from methane. The results indicated that the membranes with bulkier or longer side chains exhibited enhanced phase separation, lower glass transition temperature, and higher gas permeability. The fractional free volume (FFV) was found to be a significant factor in controlling gas separation, and its trend reversed when the size of side chains increased. The membranes with the longest side chain achieved the highest permeability and selectivity.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Chemical
Shuyana A. Heredia Deba, Bas A. Wols, Doekle R. Yntema, Rob G. H. Lammertink
Summary: This study investigates the synergistic effect of photocatalytic oxidation and membrane filtration using a photocatalytic membrane. The results show that the photocatalytic membrane effectively discolors methylene blue and exhibits a potential synergy between membrane retention and photocatalytic conversion at the membrane surface.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Abimbola A. Ashaju, Jeffery A. Wood, Rob G. H. Lammertink
Summary: The study experimentally demonstrates that a surface-driven flow is generated during the electrocatalytic reaction and can be visualized and quantified using tracer particles. The research also reveals that the particle accumulation dynamics is controlled by a positive dielectrophoretic force.
Article
Environmental Sciences
Emanuel Fonseca Dinis Costa, Maria Cristina Gagliano, Antoine Kemperman, Huub H. M. Rijnaarts, Rob G. H. Lammertink, Hardy Temmink
Summary: This study analyzed and tested sEPS fractions recovered from aerobic and anaerobic reactors to build up EPS gel layers. The results showed that anaerobic sEPS layers had lower hydraulic resistance compared to aerobic sEPS gel layers, and the polysaccharides in anaerobic sEPS contributed to a more open crosslinked network, resulting in low filtration resistance. These findings suggest potential applications of anaerobic sEPS layers as dynamic membranes in anaerobic reactors.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Engineering, Chemical
Hasan Salehi, Alireza Shakeri, Rob G. H. Lammertink
Summary: This article reports the synthesis of an amphiphilic graft copolymer and investigates its impact on membrane structure and performance. The study finds that the optimized copolymer additive significantly improves water flux and permeability of the membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Correction
Engineering, Chemical
Shuyana A. Heredia Deba, Bas A. Wols, Doekle R. Yntema, Rob G. H. Lammertink
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Chemical
Moritz A. Junker, Wiebe M. de Vos, Joris de Grooth, Rob G. H. Lammertink
Summary: A novel method of making nanofiltration membranes is to use the Layer-by-Layer method, which involves coating polyelectrolytes alternately on a porous ultrafiltration membrane to form a controllable nanometer-thin separation layer known as Polyelectrolyte Multilayer (PEM). Understanding the structural properties of PEMs and their relationship to coating conditions and membrane performance is crucial for membrane optimization. In this study, the separation performance of NF PEM membranes based on different polymer systems (PDADMAC/PSS and PAH/PAA) was investigated by analyzing the structure of the membrane, particularly the pore size distribution.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Burak Akdeniz, Jeffery A. Wood, Rob G. H. Lammertink
Summary: Chemically induced transport methods provide new opportunities for colloidal transport in dead-end channel geometries. Diffusiophoresis, which involves particle movement under an electrolyte concentration gradient, has been previously demonstrated in such channels. This study shows that concentration-dependent zeta potentials are necessary for accurately describing particle transport in dead-end channels when the zeta potential strongly depends on electrolyte concentration. Simulations incorporating concentration-dependent zeta potentials match experimental observations, while simulations using constant zeta potentials fail to capture particle dynamics. These findings contribute to a better understanding of diffusiophoresis and the diffusio-osmosis process.
Article
Chemistry, Physical
Thejas Hulikal Chakrapani, Hanieh Bazyar, Rob G. H. Lammertink, Stefan Luding, Wouter K. den Otter
Summary: Darcy's law describes the flow of Newtonian fluids through porous media, while Brinkman extended it by adding a viscous stress term. The validity and value of Brinkman's term have been debated since its introduction.
Article
Engineering, Chemical
Shuyana A. Heredia Deba, Bas A. Wols, Doekle R. Yntema, Rob G. H. Lammertink
Summary: Membranes with different TiO2 top layer thicknesses were fabricated and characterized. The optimal photocatalyst thickness was found to be 2.74 μm for single-layer membranes, while an increase in degradation was observed for membranes with multiple TiO2 layers. A mass transport and reaction model was developed to describe the coating thickness effect.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Shuyana A. Heredia Deba, Bas A. Wols, Doekle R. Yntema, Rob G. H. Lammertink
Summary: The impact of UV light intensity and distribution on the semiconductor surface during the degradation of organic compounds in water was studied using a mono and a multi-LED lamp. The electromagnetic radiation profile on the surface of the membrane was scanned and evaluated. Comparing two lamp configurations, a 20% higher degradation was achieved with the most homogeneous light distribution. The surface reaction constant increased linearly with the irradiation intensity for the most homogeneous illumination distribution.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Hematology
Naomi C. Buntsma, Mona Shahsavari, Aleksandra Gasecka, Rienk Nieuwland, Ton G. van Leeuwen, Edwin van der Pol
Summary: A practical procedure was developed to determine the optimal sample dilution for plasma in order to prevent swarm detection and maintain significant particle counts in clinical research studies. The optimal dilution factor was found to be ≤1.1×10^2-fold, and the count rate should be <1.1×10^4 events center dot s^(-1).
RESEARCH AND PRACTICE IN THROMBOSIS AND HAEMOSTASIS
(2023)
Article
Engineering, Chemical
Moritz A. Junker, Esra te Brinke, Clara M. Vall Compte, Rob G. H. Lammertink, Joris de Grooth, Wiebe M. de Vos
Summary: Polyelectrolyte multilayers (PEMs) show promise as selective layers in nanofiltration (NF) due to their simplicity, controlled layer thickness, and versatility. Combining two different PEMs in an asymmetric structure allows further optimization. This study combines experimental filtration and theoretical models to describe the effective structure of an asymmetric PEM made of PAH/PSS and PAH/PAA. The obtained membrane properties suggest a distinct layer structure, and there is a fundamental difference in the retention of salt and polyethylene glycol molecules, attributed to different exclusion mechanisms.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Sam B. Rutten, Moritz A. Junker, Lucia Hernandez Leal, Wiebe M. de Vos, Rob G. H. Lammertink, Joris de Grooth
Summary: Nanofiltration (NF) is a promising technology for treating water sources with increasing micropollutant (MP) concentrations. Understanding the influence of solution composition on filtration performance is important. This study investigated the impact of dominant salts on the removal of trace MPs by commercial hollow fiber NF membranes. The presence of a dominant salt significantly altered MP transport behavior, with a higher mobility of MPs observed in the dNF80 membrane.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Xiuqin Wang, Rob G. H. Lammertink
Summary: By introducing a multication crosslinker, crosslinked poly(arylene piperidinium)-based AEMs with efficient ion conducting pathways were successfully fabricated, improving both the conductivity and dimensional stability. Alkaline water electrolysis experiments demonstrated the great potential of multication crosslinked AEMs in this field.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
