Article
Chemistry, Physical
K. Ozawa, H. Nakamura, K. Shimamura, G. F. Dietze, H. N. Yoshikawa, F. Zoueshtiagh, K. Kurose, L. Mu, I. Ueno
Summary: We propose that a similar flow structure as horseshoe vortices around large-scale obstacles can also arise in thin-film Stokes flow around micro-obstacles, which can be exploited to enhance mixing in microfluidic devices and overcome the limitation of creeping-flow regimes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Biochemical Research Methods
Huian Liu, Jerome Randon
Summary: This study introduced micro pillar array column in high pressure gas chromatographic systems for online industrial analysis, achieving fast separation of gas mixtures and liquid hydrocarbon samples. The selectivity can be adjusted by tuning the carrier gas nature and pressure.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Engineering, Chemical
Tianjiao Wang, Xingsen Mu, Shengqiang Shen, Gangtao Liang
Summary: In this study, the sessile droplet boiling on a micropillar array surface in the nucleate boiling regime is comprehensively investigated using a three-dimensional lattice Boltzmann model. The effects of micro-pillar size on bubble behaviors inside droplet are discussed in detail.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Jianzhi Li, Kang Yang, Guihao Lian, Feng Gong, Gao Yang
Summary: This study proposes a two-stage gravity-assisted hot embossing process for the fabrication of high-quality glass micro-pillar arrays in a rapid and green manner. Experimental results show that by optimizing the process parameters, the embossed glass micro-pillars achieve high transfer ratios in height and diameter, with low surface roughness and minimal warpage. The proposed hot embossing process has strong industrialization potential for producing high-quality glass microstructures more cleanly and sustainably.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Ceramics
Xing Zhou, Mengyao Li, Dong Wang, Mengyuan Pu, Changqing Fang, Ruien Yu, Li Xie, Yan Ru
Summary: Pyramidal Al2O3 films were prepared through a combination of sol-gel method and hydrothermal reaction, and their bulk structure and components were analyzed. The films exhibited unique pyramidal structures composed of nanorods and nanospheres, with hydrophilic surface properties and low reflectance.
CERAMICS INTERNATIONAL
(2022)
Article
Acoustics
Youwen Tian, Wei Luo, Yedan Wang, Yun Yu, Wanzhen Huang, Haodong Tang, Yifan Zheng, Zongjian Liu
Summary: The ultrasound-assisted, interface-confined sol-gel method proposed in this study allows for fast encapsulation of metal microparticles in SiO2, resulting in a continuous and uniform SiO2 layer. The key steps for success include ensuring the liquid films stay attached to the particle surfaces, using proper amounts of alcohol and water, and selecting an appropriate ultrasonic power level.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Susana Devesa, Joana Rodrigues, Silvia Soreto Teixeira, Aidan P. Rooney, Manuel P. F. Graca, David Cooper, Teresa Monteiro, Luis C. Costa
Summary: Tetragonal Er0.5Nb0.5O2 and monoclinic ErNbO4 micro- and nanoparticles were synthesized using the citrate sol-gel method and heat-treated at different temperatures to explore their optical properties. Spectroscopic studies reveal Er3+ optical activation in all samples and demonstrate a controllable selective excited tunable green to red color transition.
Article
Thermodynamics
Su Cheong Park, Moo Hwan Kim, Dong In Yu, Ho Seon Ahn
Summary: The study investigated the effects of wall temperature, micro-pillar array size, and micro-pillar height on the outcomes of a single water drop impinging onto a heated surface with micro-pillar arrays. Micro-pillar arrays can lead to explosive lift-off behavior and increase the Leidenfrost temperature.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Chemical
Diliraj Upadhaya, Debarun Dhar Purkayastha
Summary: In this study, a CuO/ZnO heterostructure photo-catalyst was successfully prepared and demonstrated for self-cleaning applications. The formation of the heterostructure between CuO and ZnO was confirmed by XRD and TEM analysis. XPS analysis indicated the +2 oxidation state of zinc and copper in the samples. Contact angle studies showed the hydrophilicity of the CuO/ZnO heterostructure. The photocatalytic activity of the CuO/ZnO heterostructure was significantly higher compared to single-phase CuO and ZnO, attributed to the effective charge carrier separation due to the formation of the heterostructure. The self-cleaning activity was evaluated by the decomposition of octadecanoic acid measured through changes in contact angle values and FT-IR. This research provides a promising approach for designing heterostructured photocatalytic systems with potential self-cleaning applications.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Materials Science, Ceramics
Suna Avcioglu, Figen Kaya, Cengiz Kaya
Summary: A novel non-catalytic sol-gel route was used to synthesize nano/micro boron carbide fibers by manipulating the growth kinetics of boron carbide particles through in-situ decoration with boric acid crystals during thermal decomposition. This approach successfully produced highly crystalline boron carbide particles and various morphologies of boron carbide, such as rhomboid-plate, nanobelt, and fiber. By tailoring the structure of the preceramic precursor, the formation of boron carbide fiber was increased while polyhedral-equiaxed particles were decreased in the final products.
CERAMICS INTERNATIONAL
(2021)
Article
Polymer Science
Xiaoyu Zhang, Tao Ding, Wanlin Wang, Jiezhen Liu, Can Weng
Summary: In this study, the effects of processing parameters on residual stresses during micro-injection molding were investigated. The results showed that increasing the mold and melt temperatures can reduce residual stresses and improve the uniformity of their distribution. However, increasing the packing pressure can make the residual stresses more severe.
Article
Chemistry, Analytical
Chao Wang, Yu Liang, Baofeng Zhao, Zhen Liang, Lihua Zhang, Yukui Zhang
Summary: This study successfully prepared ethane-bridged hybrid monoliths with well-defined large mesopores, which achieved high peak capacity and separation efficiency in top-down proteomic analysis.
ANALYTICAL CHEMISTRY
(2022)
Article
Biotechnology & Applied Microbiology
Felipe Wallysson Ferreira de Oliveira, Sergio Carneiro dos Reis, Luciana Sampaio Ribeiro, Leila Nunes Menegasse Velasquez, Alexandre Alberto Chaves Cotta, Vera Lucia dos Santos, Pedro Lana Gastelois, Jose Domingos Ardisson, Armindo Santos
Summary: The effective defluoridation of artesian well water can be achieved by using iron nanoparticles confined in a structure of expanded reticulated polymer network containing high quantity of water. This nanostructured adsorbent provides good pore connectivity, significantly reducing adsorption rate limitations and enhancing adsorptive capacity. Chemical interaction mechanisms in the F-Fe-PVA-H2O system have been proven, showing potential for multiple adsorption cycles in water treatment processes.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Analytical
Tao Sun, Ruonan Chen, Qiuchen Huang, Mengyi Ba, Zhiqiang Cai, Haipeng Chen, Yueheng Qi, Hong Chen, Xianming Liu, Donatella Nardiello, Maurizio Quinto
Summary: This study investigates the use of pillar [6]arene derivative modified by long alkyl chains (P6A-C10) as a stationary phase for high-resolution gas chromatographic (GC) separations of xylene isomers, addressing the challenge of separating aromatic isomers in chemical and petroleum industries. The P6A-C10 column shows higher resolution and unique advantages compared to commercial HP-5, HP-35, DB-17, and PEG-20M columns. Quantum chemistry calculations reveal differences in non-covalent interactions with the P6A-C10 pillar framework, leading to specific selectivity for xylene isomers. Furthermore, the P6A-C10 column exhibits good repeatability.
ANALYTICA CHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Mingsheng Li, Haibao Hu, Liuzhen Ren, Mengzhuo Zhang, Jun Wen, Laibing Jia, Xiaopeng Chen
Summary: A biomimetic surface with micro-hexagonal prisms has been developed to prevent fogging on glass, providing excellent antifogging and optical properties. This surface structure mimics the toe pads of tree frogs and allows for the formation of a stable water film, resulting in improved visibility and transmittance of the glass.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Biochemical Research Methods
Ali Moussa, Ken Broeckhoven, Gert Desmet
Summary: We present a Computational Fluid Dynamics (CFD) study investigating the extra dispersion caused by joining two capillary tubes with different diameters. The study focuses on the typical flow rates and diameters used in nano-LC, considering the doubling or halving of the diameter. CFD simulations allow for a fundamental understanding of the problem under perfect conditions, and the results show that the extra dispersion can be quantified and is surprisingly small under the investigated nano-LC conditions.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Engineering, Chemical
Ward Van Geite, Ignaas S. M. Jimidar, Han Gardeniers, Gert Desmet
Summary: A universal and rapid dry assembly strategy is proposed to attain ordered arrays of micro- and nanoparticles. This method involves shooting agglomerated monodisperse silica, polystyrene, or PMMA powder microspheres against an impact plating and attracting them towards the pores of a silicon membrane device by applying a vacuum force. Excess particles are removed by brushing. The optimized conditions can be used to attain any desired 2-D particle arrangement on soft surfaces.
Article
Chemistry, Analytical
Bert Vankeerberghen, Francois Parmentier, Gert Desmet
Summary: The efficiency of liquid chromatography separations can be greatly improved by using a bundle of parallel capillary tubes instead of packed bed columns. However, the presence of polydispersity caused by small differences in capillary diameter ruins this potential. The concept of diffusional bridging that introduces a cross talk between adjacent capillaries has been proposed to solve this issue, and this study provides the first experimental proof and validation of the theory behind it. The observed reduction in dispersion aligns well with theoretical predictions, suggesting that this theory could lead to the design of a new generation of chromatographic beds with unprecedented performance.
ANALYTICAL CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Haibin Li, Zhengjin Jiang, Gert Desmet, Deirdre Cabooter
Summary: The kinetic performance of different zwitterionic hydrophilic interaction liquid chromatography polymer columns is evaluated and compared. The determination of a reliable characteristic length is complicated due to the different morphology of these column types and the heterogeneity of the monolithic columns. The use of the kinetic plot method is suggested for the comparative evaluation of these columns, which demonstrates the superior performance of the lab-made monolithic columns compared to the packed particle column.
Article
Nanoscience & Nanotechnology
Dirk Jonker, Ketki Srivastava, Marta Lafuente, Arturo Susarrey-Arce, Ward van der Stam, Albert van den Berg, Mathieu Odijk, Han J. G. E. Gardeniers
Summary: In this study, gold nanoparticles with a diameter of 67 +/- 6 nm supported by vertically aligned shell-insulated silicon nanocones were formed for ultralow variance SERS. The morphology and optical properties of the substrates were assessed through various characterization techniques. The SERS activity was measured and compared to other lithographically derived assemblies. The low variance of our substrates makes them suitable for many potential SERS applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Ignaas S. M. Jimidar, Wojciech Kwiecinski, Gijs Roozendaal, E. Stefan Kooij, Han J. G. E. Gardeniers, Gert Desmet, Kai Sotthewes
Summary: Contact electrification is the exchange of electrical charges between two surfaces when they are in contact. This principle has been used in triboelectric nanogenerators (TENGs) to generate electricity. This study demonstrates the important role of water in the charge exchange process between two insulating surfaces with different wettability. The charging process is faster and acquires more charge with increasing relative humidity, especially beyond RH = 40%. The study also reveals the effect of humidity on the charging time constant. The findings contribute to the understanding of how humidity levels influence the charging process and have implications for the design of more efficient TENGs and other eco-energy harvesting devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Dagmara Szynkiewicz, Szymon Ulenberg, Pawel Georgiev, Aleksander Hejna, Barbara Mikolaszek, Tomasz Baczek, Gino V. V. Baron, Joeri F. M. Denayer, Gert Desmet, Mariusz Belka
Summary: This study successfully produced a silica/polymer composite with retained C18 silica sorptive properties that can be reliably printed using three-dimensional (3D) FDM printing. This composite material is a significant advancement in sample preparation, particularly for complex sample matrices and when mass spectrometry is favorable. An activated 3D-printed object was achieved, allowing access to silica particles while maintaining macroscopic size and shape.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Koudi Zhu, Matthias Pursch, Bram Huygens, Sebastiaan Eeltink, Gert Desmet
Summary: The possibility of reducing pre-column band broadening (PreCBB) by using a sandwiching method with an immiscible liquid was investigated. It was found that the method can significantly improve the efficiency of early-eluting compounds. The presence of the sandwich plugs does not affect the repeatability of the analysis or the linearity of the calibration curves. However, there is a slight adverse effect on late-eluting peaks under certain conditions.
ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Environmental
Akash Raman, Carla Corina dos Santos Porto, Han Gardeniers, Cintia Soares, David Fernandez Rivas, Natan Padoin
Summary: This study simulated a system consisting of spatially-decoupled electrolytic bubbles and analyzed the growth and departure process of electrolytic bubbles and their impact on gas evolution efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemical Research Methods
Bert Vankeerberghen, Sandrien Verloy, Ignaas S. M. Jimidar, Han Gardeniers, Gert Desmet
Summary: We introduce a novel concept of producing ordered beds of spherical particles for liquid chromatography. This concept involves positioning spherical particles individually or stacked in micromachined pockets, forming an interconnected array of micro-grooves. Our breakthrough involves achieving uniform filling of the microgroove arrays with spherical particles using a rubbing approach. Numerical calculations show the advantages of this new concept over conventional packed beds in terms of order and reduced flow resistance.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Biochemical Research Methods
Claudia Venditti, Bram Huygens, Gert Desmet, Alessandra Adrover
Summary: This article reports a new homogenization approach to solve the general advection-diffusion equation in hierarchical porous media, which greatly improves the speed and accuracy of the solution. The proposed moment-based method can compute exact concentration moments and provides exact solutions for effective velocity and dispersion coefficients. It also analyzes the transient behavior and can be used to identify the necessary time and length scales for macro-transport conditions. The method is verified by comparing its predictions with direct numerical simulation results. Rating: 8/10.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Multidisciplinary
Jedrzej Winczewski, Manuel Herrera, Han Gardeniers, Arturo Susarrey-Arce
Summary: This paper presents the additive manufacturing of three-dimensional structured phosphors emitting red, green, blue, and white, which allows advanced applications in optics and photonics. This development is a step forward in realizing additive color synthesis within complex architectures relevant to integrated optics or light-emitting sources.
CHEMICAL COMMUNICATIONS
(2023)
Correction
Biochemical Research Methods
Yong Wang, Suhua Yu, Rui Li, Jing Wan, Yuheng Wang, Zongli Huo, Chunyong Wu, Li Mi, Songqin Liu
JOURNAL OF CHROMATOGRAPHY A
(2024)
Review
Biochemical Research Methods
Israel D. Souza, Maria Eugenia C. Queiroz
Summary: Organic-silica hybrid monolithic materials have gained significant attention in separation science and sample preparation due to their unique properties. This review summarizes the characteristics, current status, and recent developments of these materials, as well as discusses synthesis methods, characterization techniques, and strategies for improving extraction efficiency in various applications.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Bhagwat Upreti, Bhanu Prasad Vempatapu, Jagdish Kumar, Pankaj K. Kanaujia
Summary: Lubricating oils are essential for the effective performance of internal combustion engines. This study presents a new HPLC method for determining additives in finished lubricating oils and polar substances in used engine oils.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Zongqing Huang, Haoju Hua, Xiuzhen Du, Zipeng Zhen, Wei Zhao, Jun Feng, Ji-an Li
Summary: This study successfully isolated VHHs against the SUMO protein for the first time using biopanning of an immune camelid nanobody library. The VHHs were coupled to agarose resins to form affinity chromatography resins, allowing for one-step purification of various SUMO fusions.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Xueting Qiu, Xuben Hou, Yue Yang, Hao Fang, Fei Cui, Xinying Yang
Summary: In this study, a new method based on electrophoretically mediated microanalysis was developed for the investigation of PTPRO enzymatic activity. The method was successfully used to determine the kinetics of PTPRO and the inhibitory concentration of PTPRO inhibitors. The method exhibited improved accuracy and reduced consumption compared to traditional methods.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Feifei Luo, Mengmeng Hao, Lei Zhang, Yangguo Xie, Wei Hou, Hongya Wang, Zhongli Zhang
Summary: In this study, a comprehensive screening and structure elucidation of 23 nonvolatile organic compounds (NVOCs) in two antibody drugs was conducted. Seven previously unreported compounds were identified. A quantitative method with high sensitivity, accuracy, and precision was developed for evaluating the safety of NVOCs in drug products.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Zuzana Vosahlova, Kveta Kalfkova, Martin Gilar, Jakub Szymarek, Maria Mazurkiewicz-Beldzinska, Sylwia Studzi
Summary: A hydrophilic interaction liquid chromatography method was developed for the separation and identification of oligonucleotide impurities and metabolites, and successfully applied to the analysis of serum samples from Spinraza-treated patients.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Aswanidevi Kongasseri, Thirumalai Madhesan, Sangeetha Krishna Kumar, Sushmitha Pedugu Sivaraman, Suchashrita Mitra, Pitchaiah Kancharlapalli Chinaraga, C. V. S. Brahmmananda Rao, Sivaraman Nagarajan, Prabhakaran Deivasigamani, Akhila Maheswari Mohan
Summary: This study focuses on the sequential separation of trivalent lanthanides using modified C-18 silica-packed supports and reversed-phase HPLC technique. By tuning the column modifiers and separation parameters, the researchers achieved systematic separation of Ln(3+). The results showed that the choice of column modifiers and fine-tuning of the modification procedure were crucial for achieving excellent separation.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Raquel Perez-Robles, Szabolcs Fekete, Robert Kormany, Natalia Navas, Davy Guillarme
Summary: There is a mismatch between the sample diluent and the mobile phase in HILIC analysis, leading to analyte breakthrough and peak distortion. Adding a weak solvent for pre-injection can effectively prevent these issues and improve sensitivity.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Oleg Pokrovskiy, Irina Rostovschikova, Konstantin Ustinovich, Ilya Voronov, Dmitry Kosyakov
Summary: A chromatography-like propagation of water through the material bed was observed during supercritical fluid extraction of aroma plants with high moisture content, which could be significant for modeling the kinetics of supercritical fluid extraction of non-volatile compounds.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Yasar Kemal Recepoglu, Ozguer Arar, Asli Yuksel
Summary: Biosorption using phosphorylated hazelnut shell waste (FHS) is a promising method for lithium removal and recovery. This study investigated the performance of a continuous-flow packed-bed column system using FHS for ultra-low level lithium removal. The results showed that the lihium biosorption capacity of the FHS column was unaffected by the bed height, but decreased with increasing flow rate.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Jian Sun, Zheheng Zheng, Zixiao Jia, Jiabin Wang, Xucong Lin
Summary: In this study, an ionic covalent organic framework (iCOF) surface grafting monolithic sorbent was prepared for in-tube solid-phase microextraction (SPME) of aristolochic acids (AAs) in various samples. The density of quaternary ammonium ions in the iCOF was modulated for enhanced adsorption of AAs. The iCOF surface grafting monolithic sorbent was confirmed by different means. Several operating conditions were optimized to develop the online in-tube SPME-HPLC method, which showed good linearity, low limits of detection, and high recoveries for AAs in serum samples. This study presents a feasible approach for the application of COF-based monolithic sorbents in sample preparation.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Zeng Wen, Ruihan Peng, Die Gao, Jing Lin, Jia Zeng, Zhou Li, Famin Ke, Zhining Xia, Dandan Wang
Summary: A chitosan-alginate sponge with multiple cross-linking networks was developed for adsorption and enrichment of anionic dyes from food samples. The sponge showed better three-dimensional network structure, mechanical behavior, and stability compared to pure chitosan and alginate sponges. The adsorption performance and selectivity of the sponge were systematically studied, and it maintained high adsorption capacity and selectivity for anionic dyes. The sponge also showed satisfactory reusability and was successfully combined with high-performance liquid chromatography for the enrichment and detection of anionic dyes in candy and cocktail samples.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Hairong Zhang, Xiaojuan Jiang, Dandan Zhang, Yuexin Yang, Qiang Xie, Caisheng Wu
Summary: Analysis of in vivo exposure to traditional Chinese medicine using mass spectrometry is helpful for identifying effective ingredients and developing new drugs. This study focused on Forsythia suspensa (Lian Qiao) and used metabolomics technology to explore its in vivo exposure. By comparing the differences before and after administration, a complete set of nontargeted analysis strategies for TCM exposure was established. The study identified 393 Lian Qiao-related chemical components in mice after administration, including prototypes and metabolites. This study provides a reference for research on the active ingredients of Lian Qiao in vivo.
JOURNAL OF CHROMATOGRAPHY A
(2024)
Article
Biochemical Research Methods
Oscar Castejon-Musulen, Ricardo Lopez, Ignacio Ontan, Vicente Ferreira
Summary: A quantitative analytical method was developed and validated in this study to determine the concentrations of 81 aroma-relevant wine volatiles. The method utilizes stir bar sorptive extraction and multidimensional gas chromatography with flame ionization detector or mass spectrometer. The method demonstrated good linearity, reproducibility, and recovery, and was successfully applied to analyze 20 wine samples.
JOURNAL OF CHROMATOGRAPHY A
(2024)