Article
Chemistry, Analytical
Ryu Nakabayashi, Masanori Eguchi
Summary: This paper proposes a modified iDEP device for single-cell analysis. The device is capable of measuring particle velocity at a wide frequency range and produces consistent results.
Article
Biochemical Research Methods
Joseph Bentor, Amirreza Malekanfard, Mahmud Kamal Raihan, Sen Wu, Xinxiang Pan, Yongxin Song, Xiangchun Xuan
Summary: Experimental study shows that rheological properties of fluids significantly impact the focusing and trapping effects in iDEP microdevices. Strongly viscoelastic polyacrylamide solution demonstrates the best performance, while xanthan gum solution is not suitable for iDEP focusing.
Article
Chemistry, Physical
Lylian Challier, Justin Lemarchand, Catherine Deanno, Cecile Jauzein, Giorgio Mattana, Guillaume Meriguet, Benjamin Rotenberg, Vincent Noel
Summary: Inkjet-printing is used to create dielectrophoretic electrodes for trapping PS microparticles and planktonic cells, allowing for efficient sorting and separation based on size and composition. The printed device has the capability to separate particles ranging from 0.5 to 5 μm and different planktonic species, paving the way for large-area, microstructured dielectrophoretic electrodes for sample separation at high flow rates.
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
(2021)
Article
Chemistry, Multidisciplinary
Jian Zhou, Ye Tao, Rui Xue, Yukun Ren
Summary: This study presents a portable, self-powered microparticle manipulation platform based on triboelectrically driven dielectrophoresis (DEP). The platform utilizes a rotary freestanding triboelectric nanogenerator (RF-TENG) and rectifier/filter circuit to supply a high-voltage direct-current signal, allowing for controllable actuation of microparticles through DEP. The platform successfully achieves the high-efficiency separation of live and dead yeast cells. Compared to traditional high-voltage power sources, RF-TENG exhibits better safety and portability, offering a promising solution for the commercialization of lab-on-a-chip.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Satoko Fujiwara, Misaki Hata, Ikumi Onohara, Daiki Kawasaki, Kenji Sueyoshi, Hideaki Hisamoto, Masato Suzuki, Tomoyuki Yasukawa, Tatsuro Endo
Summary: Surface plasmon resonance is an optical phenomenon used for label-free, real-time sensing of biomolecular interactions. This paper proposes a simple and highly reproducible method using polymer-based gold nanohole arrays and dielectrophoresis for biomolecule manipulation. By utilizing SPP and LSPR modes in the visible region, rapid trapping and enrichment of nanoparticles and bovine serum albumin were achieved, indicating the potential of Au NHA-based DEP devices for bioimaging and biomarker detection.
Article
Chemistry, Analytical
Gaurav Pendharkar, Yen-Ta Lu, Chia-Ming Chang, Meng-Ping Lu, Cheng-Hsien Liu
Summary: This study introduces an insulator-based dielectrophoretic microfluidic lab-chip that can precisely pair cells and achieve cell fusion with high efficiency. The chip demonstrates high cell fusion yields and maintains cell viability, making it a promising tool for cell fusion research.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Biochemical Research Methods
Ricardo Ortiz, Domin Koh, Dai Hyun Kim, Mohammad Towshif Rabbani, Cesar Anguaya Velasquez, Mukul Sonker, Edgar A. Arriaga, Alexandra Ros
Summary: Heterogeneity in organelle size is linked to major human diseases such as neurodegenerative diseases and cancer. This research demonstrates a ratchet migration mechanism that allows size-based separation of submicrometer particles using insulator-based dielectrophoresis and continuous flow separation. Experimental and numerical modeling results show successful separation of polystyrene beads and mitochondria based on size differences.
Article
Chemistry, Physical
Matiss Martins Ramma, Juris Katkevics, Liga Jasulaneca, Gunta Kunakova, Raitis Sondors, Raimonds Meija, Donats Erts, Jelena Kosmaca
Summary: Dielectrophoresis is utilized to assemble semiconductor copper oxide nanowires for applications in energy conversion, gas sensors, and nanoelectromechanical systems. Investigation on dielectrophoresis parameters reveals the potential to achieve experimental yields of multiple- and single-nanowire interconnects. The electrical properties of nanowire-electrode interfaces formed by dielectrophoresis are studied, showing an ohmic conductivity mechanism at low electric fields and a space charge limited conductivity mechanism at higher electric fields above 10(5) V/m.
SURFACES AND INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Yalin Li, Yan Wang, Keming Wan, Mingxue Wu, Lei Guo, Xiaomin Liu, Gang Wei
Summary: This review summarizes the recent progress of dielectrophoresis (DEP) technology in biomedical applications, including the design and functional tailoring of DEP systems, as well as representative biomedical application examples. The article aims to provide new ideas for designing novel high-throughput DEP micro/nanoplatforms.
Article
Engineering, Electrical & Electronic
Seunghwan Noh, Youngjun Song
Summary: The study demonstrates the manipulation of nanoparticles and DNA molecules using dielectrophoretic trapping on an interdigitated circular electrode. A flexible printed circuit board with finger-shaped electrodes and a non-porous polyimide substrate is designed to identify and simulate the trapping conditions. Fluorescent molecules are successfully trapped at the finger edges of the electrode under specific voltage and frequency, eliminating false negative detections.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Lepeng Song, Qin Liang, Hui Chen, Hao Hu, Yu Luo, Yanling Luo
Summary: The failure of insulators may seriously threaten the safe operation of the power system. This study developed an enhanced particle swarm algorithm to optimize support vector machine parameters, establishing a SVM model for identifying normal and defective states of insulators. Experimental results showed that the proposed algorithm achieved high recognition accuracy and precision, outperforming other machine learning algorithms and optimization algorithms.
Article
Engineering, Electrical & Electronic
Jeong-Tae Kim, Sung-Min Park
Summary: This article proposes an improved modulation scheme based on unipolar sinusoidal pulsewidth modulation for a single-phase single-stage isolated bidirectional ac-dc converter. The proposed modulation scheme can eliminate high-voltage spikes in bidirectional power flow without the use of additional circuits, while achieving zero-voltage switching. Implementation of a simulation model and a 1.2 kW grid-connected ac-dc converter confirm the effectiveness of the proposed modulation scheme.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Physics, Multidisciplinary
Yann Lanoiselee, Jak Grimes, Zsombor Koszegi, Davide Calebiro
Summary: This article introduces a new method for detecting transient trapping events within a single particle trajectory, considering the spatial and temporal structure of the trajectory for studying short-lived trapping domains not visited by multiple trajectories. This method is applied to beta(2)-adrenergic receptors' single particle trajectory data, revealing increased trapping of receptors in defined domains with stimulation, without affecting diffusion of free receptors.
Article
Energy & Fuels
Irem Toprakci, Mehmet Torun, Ferhan Balci Torun, Selin Sahin
Summary: Ionic gelation is a promising technique for microencapsulation to preserve natural additives and develop novel functional foods. In this study, hibiscus sabdariffa extract was used as a biologically active additive and trapped in alginate beads using ionic gelation. The system was optimized using response surface method, and the highest encapsulation efficiency and antioxidant activity were achieved under the optimal conditions. The morphology analysis showed that the dried microcapsules had homogeneous and smooth shapes.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Multidisciplinary Sciences
Simpy Sanyal, Taeyong Kim, Matheus Rabelo, Duy Phong Pham, Junsin Yi
Summary: This study investigates the suitability of cerium-based sealing coating film for use as an anti-corrosion coating for insulator pins in low-pH and highly corrosive sites. The results show that the coating has excellent corrosion resistance and can improve the lifespan of insulator pins.
ROYAL SOCIETY OPEN SCIENCE
(2022)
