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Millifluidic triMEA organoid platform with stretchable microelectrode arrays for parallel organoid electrophysiology under standardized perfusion 具有可拉伸微电极阵列的微流控triMEA类器官平台,用于标准化灌注下平行类器官电生理
IF 6.1 2区 工程技术
Lab on a Chip Pub Date : 2026-09-21 DOI: 10.1039/d6lc00391e
Erick Chica,Yeongkag Kwon,Hojae Jang,Yoojeong Kim,Youngsun Lee,Kiup Kim,Joseph A. Gogos,Mi-Ok Lee,Hyunjoo J. Lee
{"title":"Millifluidic triMEA organoid platform with stretchable microelectrode arrays for parallel organoid electrophysiology under standardized perfusion","authors":"Erick Chica,Yeongkag Kwon,Hojae Jang,Yoojeong Kim,Youngsun Lee,Kiup Kim,Joseph A. Gogos,Mi-Ok Lee,Hyunjoo J. Lee","doi":"10.1039/d6lc00391e","DOIUrl":"https://doi.org/10.1039/d6lc00391e","url":null,"abstract":"Organoids enable rigorous studies of neurodevelopment and disease, yet existing platforms often compromise between precise microenvironment control and reliable electrophysiological measurement. The challenge of achieving uniform perfusion alongside multi-well volumetric neural recordings limits parallel functional characterization and technical reproducibility across samples. Here, we present the triMEA millifluidic platform, which integrates three stretchable microelectrode arrays within a single device and delivers uniform perfusion across three independent wells. A single inlet supplies identical perfusion to each well, which stabilizes flow patterns and equalizes mechanical stimuli between chambers. This design facilitates simultaneous, independent electrophysiological recordings from three organoids within a single experimental setup. Using human midbrain organoids as a proof-of-concept biological model, we provide computational and experimental validation of the fluidic profiles and demonstrate electrophysiological recordings across all three wells under continuous perfusion. This platform establishes a reproducible and standardized foundation for parallel organoid interfacing.","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":"44 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149010186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Data Driven and Mechanistic Modelling of PLGA Nanoparticle Formation in Hydrodynamic Flow-Focusing Microfluidics 流体动力学聚焦微流体中PLGA纳米颗粒形成的数据驱动和机理建模
IF 6.1 2区 工程技术
Lab on a Chip Pub Date : 2026-09-21 DOI: 10.1039/d6lc00612d
Muhammad Mubashar Saeed,Muhammad Turab,Lasse Højlund Eklund Thamdrup,Anja Boisen,Eadaoin Carthy,Nicholas Dunne,David Kinahan
{"title":"Data Driven and Mechanistic Modelling of PLGA Nanoparticle Formation in Hydrodynamic Flow-Focusing Microfluidics","authors":"Muhammad Mubashar Saeed,Muhammad Turab,Lasse Højlund Eklund Thamdrup,Anja Boisen,Eadaoin Carthy,Nicholas Dunne,David Kinahan","doi":"10.1039/d6lc00612d","DOIUrl":"https://doi.org/10.1039/d6lc00612d","url":null,"abstract":"Microfluidic devices offer precise control over polymeric nanoparticles (NPs) synthesis. However, rational design of process optimization to obtain a target NPs sizes remains challenging because the relationship between operating parameters, mixing dynamics, and particle formation are not very linear Here, we integrate mechanistic analysis, statistical design of experiments (DoE), and machine learning (ML) to develop predictive and inverse-design frameworks for the synthesis of poly(lactic-co-glycolic acid) (PLGA) NPs. The effects of flow rate ratio (FRR), PLGA concentration, and microchannel width were systematically investigated using hydrodynamic flow-focusing (HFF) microfluidic devices.Mixing time analysis demonstrated that NPs size is primarily governed by solvent to antisolvent mixing, with equivalent mixing times producing comparable particle sizes despite different combinations of FRR and channel width. A Box Behnken DoE yielded a highly predictive quadratic model (R² = 0.9979), identifying microchannel width as the dominant design variable, followed by PLGA concentration and FRR. Eight machine learning algorithms were subsequently developed and evaluated, with Gradient Boosting achieving the highest predictive accuracy (test R² = 0.9900, RMSE = 2.65 nm).Finally, inverse design experiments were performed for target NPs sizes of 80, 120, and 160 nm using DoE and a selected sub-set of ML models. Process conditions predicted by the developed models were implemented experimentally, and the Gradient Boosting model produced NP sizes in closest agreement with the preassigned targets, outperforming both the DoE and other ML models. This combined mechanistic and data driven framework enables reliable prediction and inverse design of PLGA nanoparticle synthesis and provides a practical strategy for intelligent, on-demand microfluidic manufacturing of polymeric nanomedicines.","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":"51 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149010183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating cannabidiol rescue of stress-induced cognitive impairment and metabolism-driven safety in Human-on-a-Chip® models. 在人体芯片模型中研究大麻二酚对应激性认知障碍的拯救和代谢驱动的安全性。
IF 6.3 2区 工程技术
Lab on a Chip Pub Date : 2026-09-16 DOI: 10.1039/d6lc00226a
Cai Read, M Jakob Rupar, Kaveena Autar, Gregg P Kotchey, Hannah M Hanson, Raul Banos, Gabriel J Kaatz, Brianna L Botlick, Chelsea Honore, Ashley N Braxton, Brady C Franson, William E Bogen, Christopher J Long, Rocky L Brighton, Lawrence B Florin, Sarah Withey, James J Hickman, Tommaso Iannitti
{"title":"Investigating cannabidiol rescue of stress-induced cognitive impairment and metabolism-driven safety in Human-on-a-Chip® models.","authors":"Cai Read, M Jakob Rupar, Kaveena Autar, Gregg P Kotchey, Hannah M Hanson, Raul Banos, Gabriel J Kaatz, Brianna L Botlick, Chelsea Honore, Ashley N Braxton, Brady C Franson, William E Bogen, Christopher J Long, Rocky L Brighton, Lawrence B Florin, Sarah Withey, James J Hickman, Tommaso Iannitti","doi":"10.1039/d6lc00226a","DOIUrl":"10.1039/d6lc00226a","url":null,"abstract":"<p><p>This manuscript combined two studies that assessed the effects of cannabidiol (CBD) exposure in distinct organ-on-a-chip models. Hesperos, Inc.'s Human-on-a-Chip® (HoaC) technology utilizes custom-designed human-based, serum-free, and pumpless microphysiological systems (MPS). The first study, study 1, assessed the level of off-target toxicity for CBD and its associated metabolites, 7-carboxy cannabidiol and 7-hydroxy cannabidiol, using a multi-organ heart-liver system. In study 1, CBD was delivered to systems with and without the inclusion of a liver organ module to evaluate metabolic contributions to corresponding cardiac toxicity. The results suggested that metabolism of the parent compound into its metabolites resulted in significant effects when compared to exposure to the parent compound only. Interestingly, significant distinctions in cardiac function, such as beat frequency and contractile force, were detected even though no significant cytotoxic effects were noted. The second study, study 2, utilized the same HoaC technology and employed a central nervous system (CNS) model using human induced-pluripotent stem cell derived cortical neurons. This model assessed CBD efficacy in alleviating stress-induced neural dysfunction in a single-organ model of the CNS, mimicking neuromodulation through a CBD administration route that does not involve first-pass metabolism. The results indicated a concentration-dependent rescue of CBD on cortisol-induced deficits in long-term potentiation (LTP) in this model, which was mirrored by associated changes in anandamide levels. Overall, these studies highlight the potential of human-based <i>in vitro</i> systems to evaluate drug toxicity and efficacy profiles specific to target mechanisms for toxicity and efficacy.</p>","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":" ","pages":"4913-4934"},"PeriodicalIF":6.3,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148700121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biocementation shows a three-dimensional geometry dependence in microfluidic pore networks mapped by deep-learning segmentation. 生物胶结在深度学习分割映射的微流体孔隙网络中显示出三维几何依赖性。
IF 6.3 2区 工程技术
Lab on a Chip Pub Date : 2026-09-16 DOI: 10.1039/d6lc00125d
Brooke E Filanoski, Marisa L Bobal, Kendal R Phinney, Darke R Hull, David Erickson
{"title":"Biocementation shows a three-dimensional geometry dependence in microfluidic pore networks mapped by deep-learning segmentation.","authors":"Brooke E Filanoski, Marisa L Bobal, Kendal R Phinney, Darke R Hull, David Erickson","doi":"10.1039/d6lc00125d","DOIUrl":"10.1039/d6lc00125d","url":null,"abstract":"<p><p>Microbially induced calcium carbonate precipitation (MICP) can transform granular media into cohesive, load-bearing materials, yet pore-scale design rules linking geometry, transport, and mineral growth remain difficult to pin down. Here we present a resin-molded microfluidic pore-network platform that mimics coarse-aggregate architectures relevant to living building materials and allows controlled variation of pore geometry. Devices loaded with <i>Sporosarcina pasteurii</i> were imaged using paired brightfield and transmitted-light polarization microscopy to resolve structure and quantify birefringent CaCO<sub>3</sub>. Automated image segmentation constrained analysis to the pore space, enabling high-throughput extraction of precipitation coverage, particle density, and feature size across hundreds of fields. Across the tested range, precipitation outcomes depended on channel height and porosity, whereas pillar diameter showed no measurable effect on coverage when porosity and height were fixed. Lower porosity tended to increase particle density but limit feature growth, while higher porosity and taller channels favored larger, coalescing deposits and more spatially continuous films. These patterns are consistent with transport shaping which regime occurs: channel height and porosity together appear to set diffusive replenishment and byproduct dilution, shifting mineralization between a nucleation-dominated regime of many small deposits and a coalescence-dominated regime of fewer, larger features.</p>","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":" ","pages":"4903-4912"},"PeriodicalIF":6.3,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148682641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A portable instrument for intelligent analysis of low-abundance groundwater microplastics with dielectrophoresis-based assembly. 基于介电泳组件的便携式低丰度地下水微塑料智能分析仪器。
IF 6.3 2区 工程技术
Lab on a Chip Pub Date : 2026-09-16 DOI: 10.1039/d6lc00683c
Xiaoming Chen, Hongsheng Liu, Qihang Ye, Jishun Shi, Xiang Li, Dong Chen, Hongmin Zhu, Xuguang Hu, Yong Zhao
{"title":"A portable instrument for intelligent analysis of low-abundance groundwater microplastics with dielectrophoresis-based assembly.","authors":"Xiaoming Chen, Hongsheng Liu, Qihang Ye, Jishun Shi, Xiang Li, Dong Chen, Hongmin Zhu, Xuguang Hu, Yong Zhao","doi":"10.1039/d6lc00683c","DOIUrl":"10.1039/d6lc00683c","url":null,"abstract":"<p><p>Microplastic pollution in groundwater has become one of the most challenging environmental issues. However, there is a lack of portable instruments for on-site detection of low-abundance microplastics. To address this, we developed a portable instrument for intelligent analysis of low-abundance microplastics in groundwater by integrating the dielectrophoretic (DEP) assembly of a four-phase rotating electric field with an object detection framework based on YOLO26. Firstly, a microfluidic chip was designed and fabricated to construct a portable instrument for rapid assembly, and an object detection model was developed to identify microplastics with diverse sizes, shapes, and colors. Secondly, a computational model was established to theoretically investigate the phase-dependent variation in the electric field and the microplastic assembly by analyzing particle velocities and trajectories. The feasibility of this portable instrument was demonstrated using polystyrene microplastics, which was consistent with the numerical simulations. Thirdly, the assembly performance of the chip was explored for microplastics of different polymer types, and the voltage-amplitude and solution-conductivity dependencies of microplastics assembly were systematically characterized. Depending on these, we used this portable instrument to achieve the intelligent analysis of spherical microplastics, including the size and abundance. Finally, the portable instrument was engineered for the detection of low-concentration microplastics in groundwater to rapidly acquire the size and abundance of microplastics with irregular shapes. This instrument can realize rapid assembly and intelligent analysis of low-concentration microplastics in groundwater and holds great potential in the guarantee of the drinking-water safety with advantages of intelligence, portability, and multiparametricity.</p>","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":" ","pages":"5060-5074"},"PeriodicalIF":6.3,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A solid-state heater-imager for quantitative evaluation of colorimetric isothermal nucleic acid amplification on paper. 一种固态热成像仪,用于定量评价纸上比色等温核酸扩增。
IF 6.3 2区 工程技术
Lab on a Chip Pub Date : 2026-09-16 DOI: 10.1039/d6lc00154h
Bibek Raut, Gopal Palla, Dan Van Nguyen, Rachel A Munds, Abdullah Bayram, Virendra Kumar, Bilal Ahmed, Cindy Mayorga, Aaron Ault, Aaron Gilbertie, J Alex Pasternak, Mohit S Verma
{"title":"A solid-state heater-imager for quantitative evaluation of colorimetric isothermal nucleic acid amplification on paper.","authors":"Bibek Raut, Gopal Palla, Dan Van Nguyen, Rachel A Munds, Abdullah Bayram, Virendra Kumar, Bilal Ahmed, Cindy Mayorga, Aaron Ault, Aaron Gilbertie, J Alex Pasternak, Mohit S Verma","doi":"10.1039/d6lc00154h","DOIUrl":"10.1039/d6lc00154h","url":null,"abstract":"<p><p>Maintaining precise isothermal conditions in portable nucleic acid amplification tests (NAATs) is critical for reproducible results but remains challenging with conventional single-sided thin-film heaters, which exhibit temperature gradients and strong dependence on ambient conditions. To close this gap, we engineered ThermiQuant™ VitroMini, a dual-sided heater design that achieves volumetric-level temperature uniformity using thin-film heaters while preserving optical transparency for real-time colorimetric loop-mediated isothermal amplification (LAMP) analysis on microfluidic paper-based analytical devices (μPADs). The device integrates two independently regulated indium tin oxide (ITO) heaters (8 Ω each) controlled by independent proportional-integral-derivative (PID) algorithms. Heaters were evaluated under controlled ambient environments of 4 °C (refrigerated), 23 °C (room temperature), and 50 °C (oven). Analytical tests were performed using a colorimetric LAMP assay targeting the SARS-CoV-2 <i>orf7ab</i> gene on μPADs preloaded with dried LAMP reagents, with time-lapse images (30 seconds interval) analyzed <i>via</i> Amplimetrics™ software. VitroMini maintained 65 ± 0.5 °C across 4 to 50 °C ambient conditions and achieved a limit of detection of 34 copies per reaction (4.5 copies per μL) and limit of quantification of 1000 copies per reaction (133 copies per μL), with quantification time (<i>T</i><sub>q</sub>) linearly correlated with log<sub>10</sub> DNA concentration. Dual-sided heating eliminated temperature bias, condensation artifacts, and ambient-dependent variability while preserving optical transparency for real-time quantitative LAMP reaction. ThermiQuant™ VitroMini bridges the gap between benchtop volumetric heaters and portable diagnostic devices, offering a compact, low-power platform for quantitative colorimetric molecular analysis on paper with potential for decentralized and field-deployable applications.</p>","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":" ","pages":"4970-4983"},"PeriodicalIF":6.3,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spatially programmable deterministic lateral displacement for multi-stage microfluidic separation. 多级微流体分离的空间可编程确定性横向位移。
IF 6.3 2区 工程技术
Lab on a Chip Pub Date : 2026-09-16 DOI: 10.1039/d6lc00402d
Ze Jiang, Yusuke Kanno, Takasi Nisisako
{"title":"Spatially programmable deterministic lateral displacement for multi-stage microfluidic separation.","authors":"Ze Jiang, Yusuke Kanno, Takasi Nisisako","doi":"10.1039/d6lc00402d","DOIUrl":"10.1039/d6lc00402d","url":null,"abstract":"<p><p>Deterministic lateral displacement (DLD) is a widely used microfluidic technique for continuous size-based separation. However, a conventional uniform DLD array is characterized by a single critical diameter (<i>D</i><sub>c</sub>) fixed by its geometry, restricting its ability to fractionate complex samples containing multiple particle populations. Here we present a DLD platform that spatially programs the geometrically estimated <i>D</i><sub>c</sub> after fabrication by thermally modulating the pillar geometry along a single array. Two independently controlled Peltier elements establish a longitudinal temperature field that progressively changes the pillar diameter and inter-pillar gap, generating an estimated <i>D</i><sub>c</sub>(<i>x</i>) profile ranging from 4.7 to 19.2 μm within an array fabricated with uniform initial geometry. As particles traverse the array, size-dependent transitions between bump and zigzag migration modes occur at different positions, producing distinct cumulative lateral displacements and enabling sequential separation within a single device. Using the three-outlet architecture, the device further enables reconfigurable grouping of a four-component particle mixture into three outlet fractions by shifting the applied temperature window. Furthermore, the platform selectively isolated tumor cells, white blood cells, and red blood cells from diluted whole-blood samples spiked with MCF-7 cells. A descriptive assay indicated high post-processing viability of the MCF-7 cells. By enabling post-fabrication programming of the operating separation profile, this work demonstrates how the same physical array can be reconfigured for different separation tasks by changing the applied temperature window.</p>","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":" ","pages":"4814-4829"},"PeriodicalIF":6.3,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148667718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impedance-based particle tracking at micrometer scale with limited training data: a deep learning architecture analysis and optimization framework. 具有有限训练数据的微米级基于阻抗的粒子跟踪:深度学习架构分析和优化框架。
IF 6.3 2区 工程技术
Lab on a Chip Pub Date : 2026-09-16 DOI: 10.1039/d6lc00506c
Benoît Romain, Aude Bolopion, Hugo Daguerre
{"title":"Impedance-based particle tracking at micrometer scale with limited training data: a deep learning architecture analysis and optimization framework.","authors":"Benoît Romain, Aude Bolopion, Hugo Daguerre","doi":"10.1039/d6lc00506c","DOIUrl":"10.1039/d6lc00506c","url":null,"abstract":"<p><p>In this study, we present and analyze a deep learning framework designed to achieve real-time particle localization from successive electrical impedance measurements with a limited training dataset. The goal is to provide the research community with a comprehensive analysis of the role of the different constituent elements of a network and a way to optimize their parameters. All the code is made available (see SI). The proposed algorithm combines a temporal convolutional network (TCN), a bidirectional long short-term memory (BiLSTM), a fully connected network (FCN), and an automated parameter tuning engine. Although vision-based systems could be used to track the position of micrometer-sized particles, this modality has practical limitations due to the size of the equipment, its complexity, and the narrow field of view. Thus, an emerging approach for localization is to exploit the correlation between electrical impedance measurements and the position of the successive particles. While physics-based algorithms have been proposed for localizing particles from impedance measurements, they rely on analytical assumptions on feature correlation. Learning-based approaches remove this bias by directly mapping patterns from raw data. However, state-of-the-art models typically require massive training datasets and offer minimal transparency regarding parameter selection. To contribute to the deployment of such algorithms in the lab-on-a-chip community, we introduce a framework that unifies feature extraction with a data-driven architectural tuning engine, designed to maintain predictive capacity under data-scarcity constraints. This paper analyzes the role of each element of the algorithm with respect to the particularities of particle localization, with the data made available alongside the code. The methodological robustness of the framework is validated <i>via</i> a micrometer-scale particle localization case study. Using a small training dataset of only 53 polystyrene beads of 8 μm and 5 μm, the optimized model establishes a localization accuracy of 3.34 μm ± 1.24 μm, while demonstrating real-time prediction times as low as 0.58 ms to support its potential for closed-loop control applications. While this work validates the methodology using uniform beads to evaluate network behavior independently of biological variability, the underlying optimization framework is inherently generic and so, applicable to more complex, heterogeneous biological samples, and will contribute to the deployment of data-driven approaches in the community.</p>","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":" ","pages":"5022-5034"},"PeriodicalIF":6.3,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Frequency-programmable particle routing and separation via steerable SAWs from azimuthally tapered interdigital transducers. 频率可编程粒子路由和分离,通过可操纵的saw从方位锥形数字间传感器。
IF 6.3 2区 工程技术
Lab on a Chip Pub Date : 2026-09-16 DOI: 10.1039/d6lc00326e
Liang Shen, Wang Chaohui, Junchao Lu, Andrew Moomaw, Zhenhua Tian
{"title":"Frequency-programmable particle routing and separation <i>via</i> steerable SAWs from azimuthally tapered interdigital transducers.","authors":"Liang Shen, Wang Chaohui, Junchao Lu, Andrew Moomaw, Zhenhua Tian","doi":"10.1039/d6lc00326e","DOIUrl":"10.1039/d6lc00326e","url":null,"abstract":"<p><p>This study presents a frequency-programmable, acoustofluidic particle routing and separation platform that enables frequency-dependent adjustment of the trajectories and destinations of micro- and submicrometer particles in continuous flows, thereby achieving outlet-switchable particle separation and on-demand switching of particle routing destinations. These capabilities arise from our platform's ability to steer traveling/standing surface acoustic waves (SAWs) <i>via</i> frequency tuning. To achieve these particle routing and separation and SAW control abilities, particularly, our platform employs two azimuthally tapered, frequency-steerable interdigital transducers (AFIDTs), each with azimuthally continuously tapered electrode widths and spacings. Arranged with rotational symmetry, paired AFIDTs can generate steerable standing SAWs whose node-line orientation rotates with excitation frequency. This frequency-steering function was validated by laser vibrometry and particle patterning. We then successfully demonstrated on-demand, frequency-programmable adjustment of micro- and submicrometer particle routes and switching of target outlets, when continuously flowing micro- and submicrometer particles (<i>e.g.</i>, polystyrene beads, silica particles, and Jurkat cells) in a microchannel with three exits. Moreover, mixed 5 and 10 μm particles were effectively separated by exploiting size-dependent acoustic radiation forces. Numerical simulations of the SAW and streaming fields corroborated experimental observations. Our frequency-steerable AFIDT platform provides a compact, label-free approach for on-demand, programmable particle routing/separation, with strong potential for integration into microfluidic separation and diagnostic systems.</p>","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":" ","pages":"5088-5098"},"PeriodicalIF":6.3,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148808094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication of 3D microcages by two-photon polymerization for microsphere capture and cell spatial distribution. 双光子聚合法制备三维微笼,用于微球捕获和细胞空间分布。
IF 6.3 2区 工程技术
Lab on a Chip Pub Date : 2026-09-16 DOI: 10.1039/d6lc00491a
Yilei Xu, Shengying Fan, Shuang Zhang, Mingxuan Gao, Xiewen Wen, Kabashnikava Liudmila, Xinyan Cai, Wei Cheng
{"title":"Fabrication of 3D microcages by two-photon polymerization for microsphere capture and cell spatial distribution.","authors":"Yilei Xu, Shengying Fan, Shuang Zhang, Mingxuan Gao, Xiewen Wen, Kabashnikava Liudmila, Xinyan Cai, Wei Cheng","doi":"10.1039/d6lc00491a","DOIUrl":"10.1039/d6lc00491a","url":null,"abstract":"<p><p>Micro/nanostructures exhibit distinctive advantages in cell capture and spatial distribution analysis. Nonetheless, conventional cell research approaches face challenges including strong equipment dependence, complex operational procedures, and difficulties in achieving precise spatial confinement. In this study, three-dimensional microcage arrays are fabricated <i>via</i> FL-TPP, enabling the construction of structures with customizable inner diameters and achieving highly precise, three-dimensional biomimetic, and high-throughput cell capture. The fabrication of structures with controllable inner diameters is realized. Through the synergistic effects of gravity and hydrodynamic forces, the microcage arrays efficiently and selectively capture microspheres and fibroblasts of specific sizes. In addition, microcages with varying inner diameters significantly modulate cell behavior and effectively avoid cell damage. This work broadens the applicability of micro/nanostructures in tissue engineering, including cell capture and the construction of biomimetic microenvironments.</p>","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":" ","pages":"4997-5006"},"PeriodicalIF":6.3,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148757088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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