Article
Chemistry, Analytical
Kailiang Zhang, Fangyuan Xing, Jiuqing Liu, Zhijie Xie
Summary: This paper presents a method for effective on-chip droplet generation, splitting, and switching using controllable hydrodynamics. A two-dimensional simulation model based on the phase-field method is established to analyze the hydrodynamic droplet manipulation behaviors. The numerical results show that the droplets can be generated with controlled sizes and can realize on-demand splitting and switching.
ANALYTICA CHIMICA ACTA
(2022)
Article
Engineering, Environmental
Xun Tan, Yijun Chen, Qiang Xue, Xingxing He, MingLi Wei, Ping Wang, Lei Liu, Jiangshan Li, Xiande Xie
Summary: Fenton oxidation can effectively improve the dewaterability of aged sludge. Quantification of the addition of optimal reagents is central to the conditioning and dewatering of aged sludge, with improving accuracy significant for cost effectiveness. By investigating the physicochemical characteristics and interactions among critical indicators of aged sludge, a new reagent addition quantification method and empirical model were developed to understand the optimal reagent addition.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Sagar N. Agnihotri, Mohammad Reza Raveshi, Rajneesh Bhardwaj, Adrian Neild
Summary: This paper demonstrates a selective multisite splitting and merging system using single-layer microfluidic valves, offering simplicity, biocompatibility, and high-speed operation. These valves control the generation of droplets and splitting locations, as well as allow for merging different types of droplets.
MICROFLUIDICS AND NANOFLUIDICS
(2021)
Article
Chemistry, Physical
Ariane Stucki, Petra Juskova, Nicola Nuti, Steven Schmitt, Petra S. Dittrich
Summary: Microfluidic methods for forming single and double emulsion droplets have greatly enhanced high-throughput screening capabilities for various applications. A new strategy is introduced for on-demand delivery of reactants in DEs using lipid vesicles as carriers, allowing synchronized release of content inside DEs to be triggered at any desired time.
Article
Thermodynamics
Qimeng Lv, Can Li, Yingchun Wu, Xinhao Wang, Xuecheng Wu
Summary: This study investigates the evaporation characteristics of a monodisperse droplet stream of pure ethanol containing aluminum nanoparticles. The results show that droplet evaporation still follows the classical D-2 law under the experimental conditions, and the addition of aluminum nanoparticles gradually decreases the evaporation rate.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Multidisciplinary
Peter J. H. Williams, Charles Killeen, Ian C. Chagunda, Brett Henderson, Sofia Donnecke, Wil Munro, Jaspreet Sidhu, Denaisha Kraft, David A. Harrington, J. Scott McIndoe
Summary: Continuous addition kinetic elucidation (CAKE) is a method to address the challenges in catalytic reactions by continuously injecting a catalyst and monitoring reaction progress, reducing workload and improving reproducibility.
Article
Chemistry, Analytical
Bo-han Yang, Bao-shan Liu, Ze-liang Chen
Summary: This study introduces a simplified and less time-consuming TRIzol-modified method for DNA extraction, which shows comparable results to the classic method and commercial methods, making it suitable for various molecular biology analyses.
ANALYTICAL SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Dong Song, Changsheng Xu, Baowei Song, Guang Pan, Haibao Hu, Chang-Hwan Choi
Summary: In this study, a method to split an impacting droplet into two halves using a superhydrophobic wire is proposed, and the effects of the wire wettability and the impact velocity of the droplet on the splitting phenomena are investigated. The results show that the superhydrophobic wire can effectively split the droplet at high velocities and prevent ice accretion at low temperatures, suggesting its potential applications in droplet manipulation and anti-icing.
Article
Chemistry, Multidisciplinary
Seo Jun Bae, Seon Jun Lee, Do Jin Im
Summary: This study demonstrates a method for simultaneous separating, splitting, collecting, and dispensing a cell suspension droplet using aspiration and droplet pinch-off. The method is applied to cell manipulations and can successfully exchange culture medium for spheroid droplets. The dispensed droplet size can be controlled by adjusting the aspiration flow rate, and the capillary number plays a significant role in droplet pinch-off.
Article
Energy & Fuels
Ibrahim Ahmad Ibadurrohman, Nurkholis Hamidi, Lilis Yuliati, Winarto, Masato Mikami
Summary: This study investigates the droplet combustion characteristics of biodiesel and vegetable oil constituents with ethanol additives. It finds that ethanol breaks the fuel into smaller molecular aggregates, increasing the diffusion contact area and burning rate. Ethanol also delays evaporative cooling, resulting in a shorter ignition delay time and promoting droplet combustion.
Article
Mechanics
Suchen Wu, Liangyu Wu, Juan Chen, Chengbin Zhang, Xiangdong Liu, Yongping Chen, Wei Gao
Summary: This work experimentally studies droplet splitting in fractal tree-shaped microchannels. Four flow patterns of droplet splitting are distinguished based on the level of bifurcations. The self-similar variation of droplet pressure and velocity is discussed, and the quantitative examination of the effect of capillary number and droplet size on daughter and granddaughter droplet size distribution is conducted. The results show that tree-shaped networks with a branching angle of 90 degrees perform better in sequential droplet breakup. Asymmetry in breakup accumulates in high-level branch channels. Increasing the capillary number helps maintain the monodispersity of daughter and granddaughter droplets by eliminating the non-breakup regime in low-level branch channels. The performance of droplet splitting deteriorates as the mother droplet size decreases, with more inactive branch channels observed.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2023)
Article
Microbiology
B. Spilsberg, C. Sekse, Anne M. Urdahl, Live L. Nesse, Gro S. Johannessen
Summary: This study investigated the survival of a Stx phage in minced beef stored at a suboptimal temperature and optimized DNA extraction methods. The results showed that Stx phages can persist and remain infectious for at least 20 days in food products, posing a potential risk to humans. Although transduction may occur at the storage temperature studied, it is expected to be rare but could potentially occur under more optimal conditions.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Agriculture, Dairy & Animal Science
Yi-Hsieng Samuel Wu, Yi-Ling Lin, Sheng-Yao Wang, Danqing Lin, Jr-Wei Chen, Yi-Chen Chen
Summary: By optimizing the washing and salt addition process, high-quality chicken-surimi batter and products can be obtained.
Article
Chemistry, Multidisciplinary
Minsang Yu, Doyeon Lim, Jungwoo Kim, Youngjun Song
Summary: DNA can be used to store digital data and synthetic DNA pools can store large amounts of data. A new method has been developed to actively edit DNA data in pools, allowing for random access and high fidelity decoding.
Article
Chemistry, Applied
Meng-Yang Chang, Kuan-Ting Chen, Hsing-Yin Chen
Summary: In this study, a diverse range of substituted 2-thienylmethyl beta-ketosulfones were synthesized through a Grignard reagent-mediated and solvent-controlled 1,8-addition reaction. The reaction was conducted in a diethyl ether-dioxane cosolvent and dioxane (v/v=4/1) under ice-bath conditions, resulting in moderate yields. Additionally, the 1,4-addition reaction of alpha-heterocyclic beta-ketosulfones was also investigated, and the structure of the key product was confirmed using X-ray analysis. DFT calculations were employed to rationalize the regioselectivity of the 1,8-addition reaction.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
