Article
Biochemical Research Methods
Md Ehtashamul Haque, Alvaro J. J. Conde, William N. N. MacPherson, Stephen R. R. Knight, Richard M. M. Carter, Maiwenn Kersaudy-Kerhoas
Summary: A finger-actuated blood lysate preparation device based on acoustofluidic micromixer is developed for effective red blood cell lysis, which has potential applications in various blood-based diagnostic tests. The device features innovative design and user-friendly operation, offering opportunities for the development of low-cost microfluidic-based diagnostics.
Article
Robotics
Zheng Zhang, Xiangqi Ni, Helong Wu, Min Sun, Guanjun Bao, Huaping Wu, Shaofei Jiang
Summary: This study presents the design and testing of a novel self-adaptive soft gripper that integrates pneumatic actuators and bistable carbon-fiber reinforced polymer laminates. The gripper shows good compliance and adaptability for gripping deformable objects of various sizes, shapes, and weights. The results demonstrate the superior performance of the gripper in terms of shape retention, object grasping, and response times.
Article
Chemistry, Analytical
Runze Yu, Dacheng Zhang
Summary: This paper proposes a bistable shock structure based on the thermal actuation principle, which can overcome the response time limitation of typical thermal actuators and enable rapid energy release. It introduces an automated and resettable method for shock testing of microstructures using the bistable shock structure to generate on-chip shock loads.
Article
Mechanics
Kamran Soltani, Mohammad Fathalilou, Ghader Rezazadeh
Summary: This paper investigates fluid-solid interaction in an electrostatic microvalve to control flow rate. By imposing a DC voltage on a double clamped microbeam in a capacitive system, the microbeam is deflected, changing the boundary conditions of the fluid domain. The Navier-Stokes and Euler-Bernoulli equations are solved simultaneously in each step of increasing voltage. A mapping approach is used to overcome difficulties in the finite element solution for moving boundaries in the fluid domain. Silicon and dielectric elastomer (DE) are compared as materials for the microbeam, and the results show that DE can be an attractive candidate for microvalve due to its lower required applied voltage for achieving a certain flow rate. The findings of this study are also valuable for modeling fluid-solid interaction problems with moving boundaries, especially in microvalve design applications.
INTERNATIONAL JOURNAL OF APPLIED MECHANICS
(2023)
Article
Engineering, Electrical & Electronic
Ko-Ting Cheng, Hengyu Guo, Vincent K. S. Hsiao, Jr-Hau He, Zhong Lin Wang
Summary: In this study, the actuation and on-off switching of PDLCs are achieved by applying r-TENG. The optical states of PDLC cells at different low frequencies are investigated, and the key factor affecting PDLC performance is found to be I-sc. Furthermore, the successful demonstration of connecting multiple PDLC cells with equivalent power consumption to a single PDLC cell is achieved.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Mechanics
Yingchao Zhang, Yinji Ma, Jing Yu, Huajian Gao
Summary: Snap-through buckling of bistable structures can be triggered and controlled through deformation caused by an externally applied magnetic field in hard magnetic elastica (HME). The key parameters in the design of HME are the remanent magnetization density after premagnetization and the external magnetic field. Experimental results show that optimal positions of a single magnetization interface and directions of a uniform actuation field can reduce the required actuation field for snapping nearly by half in pre-buckled beams with two-ends fixed.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Physics, Multidisciplinary
Huacheng Nie, Yuexia Lv, Tingting Du, Xinyu Song
Summary: This study proposes temperature-driven switching of bistable slit flow and investigates the flow deflection characteristics and switching mechanism through a two-dimensional numerical simulation. The temperature gradient biases and locks the slit flow to the high-temperature side, resulting in larger deflection angles with increasing temperature gradient. The flow can be switched from one side to the other driven by temperature, with the degree of deflection and switching time determined by the fluid viscosity. This research enriches the active regulation of flow and has significant potential applications in thermal sensors, thermal detectors, microelectromechanical systems, biomedicine, and other equivalent fields.
Article
Chemistry, Analytical
Nicola Pio Belfiore, Alvise Bagolini, Andrea Rossi, Gabriele Bocchetta, Federica Vurchio, Rocco Crescenzi, Andrea Scorza, Pierluigi Bellutti, Salvatore Andrea Sciuto
Summary: This study presents the development of a new microgripper actuated by rotary-comb drives with CSFH flexures. The adoption of multiple CSFHs allows for complex mechanical structures and increased design parameters. The fabricated microgripper has been tested in the lab and the results were used to evaluate simulation tools for minimizing expensive equipment in operational environments.
Article
Engineering, Multidisciplinary
Mathias Wallin, Anna Dalklint, Daniel Tortorelli
Summary: This paper presents the design of bistable gates using topology optimization, aiming to maximize stiffness in stable configurations while ensuring energy and distance separations, and constraining peak stress and total mass. Nonlinear programming and adjoint method are utilized to efficiently calculate sensitivities, and conventional techniques such as SIMP interpolation, PDE filtering, and Heaviside thresholding are included. Numerical examples show various potential gate designs.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Computer Science, Information Systems
Farrukh Waheed, Imran Khan Yousufzai, Michael Valasek
Summary: This paper presents a systematic approach to formulating a Time-Varying Model Predictive Control (TV-MPC) framework for uncertain and under-actuated mechanical systems. The proposed methodology utilizes nonlinear decomposed dynamics and Laguerre functions for modeling and control trajectory prediction. It addresses the issue of numerical ill-conditioning problem for large prediction horizons and is demonstrated using a rotary inverted pendulum case study.
Article
Automation & Control Systems
Maura Power, Antoine Barbot, Florent Seichepine, Guang-Zhong Yang
Summary: Fabricating actuatable micromechanisms onto submillimeter medical instruments allows for microsurgery, targeted drug delivery, and cellular-level intervention. However, the lack of integrated microsensors or optical feedback and the low stiffness of compact actuators hinder closed-loop control. This study develops a compact bistable open-loop micromechanism that allows for precise control without the need for feedback. The fabrication of this high-resolution bistable micromechanism is achieved through a refined two-photon polymerization process.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Instruments & Instrumentation
Elena Vazquez, Jose P. Duarte
Summary: Kinetic facade systems can adjust to different environmental conditions, improving daylight performance in buildings. This study tested the daylight performance of a kinetic bistable screen and validated its effectiveness through experimental and simulation data. Results show that bistable kinetic screens can help improve daylight performance in buildings.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
B. Danish, P. M. Anilkumar, Ayan Haldar, B. N. Rao
Summary: This study investigates the dynamic snap-through of unsymmetric cross-ply laminates using MFC actuators under oscillating impulse voltages. The effects of MFC bondage on the stable equilibrium configurations of the bistable laminate are discussed using a finite element framework. The results show that actuating MFC layers through oscillating impulse voltages reduces the maximum snap-through voltage requirements.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Physics, Applied
Sayed N. Masabi, Hailing Fu, Stephanos Theodossiades
Summary: This paper presents the design, theoretical modelling and experimental study of a bi-stable energy harvester using rotary-translation motion for ultra-low frequency and low excitation amplitude energy sources. The results show that the harvester operates in intra-well or inter-well motion depending on the operating conditions.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Physics, Multidisciplinary
Ali Hamrah Gharamaleki, Amir Kevin
Summary: The study explores the lateral and rotary light-drag effects in a four-level vee+ladder configuration with a Rydberg state as the topmost level. It is observed that enhancing lateral and rotary light drags while suppressing absorption is challenging in three-level vee and ladder configurations, but achievable in the proposed configuration. The intensity of controlling fields plays a significant role in enhancing the light-drag effects.
Editorial Material
Electrochemistry
Rangachary Mukundan, Ajit Khosla, Peter Hesketh, William Heineman, Osamu Niwa
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2017)
Article
Biochemical Research Methods
Srinivas Hanasoge, Matthew Ballard, Peter J. Hesketh, Alexander Alexeev
Editorial Material
Electrochemistry
Rangachary Mukundan, Ajit Khosla, Praveen Kumar Sekhar, Peter Hesketh, Charles Henry, Luca Magagnin
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2018)
Article
Chemistry, Analytical
Daniel Struk, Amol Shirke, Alireza Mahdavifar, Peter J. Hesketh, Joseph R. Stetter
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Physical
Srinivas Hanasoge, Peter J. Hesketh, Alexander Alexeev
Article
Nanoscience & Nanotechnology
Srinivas Hanasoge, Peter J. Hesketh, Alexander Alexeev
MICROSYSTEMS & NANOENGINEERING
(2018)
Article
Chemistry, Analytical
Jialuo Chen, Ardalan Lotfi, Peter J. Hesketh, Satish Kumar
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Chemistry, Analytical
Tzu-Hsuan Chang, Daniel Struk, Milad Navaei, Vladimir M. Doroshenko, Victor Laiko, Eugene Moskovets, Konstantin Novoselov, Jean-Marie D. Dimandja, Peter J. Hesketh
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Nanoscience & Nanotechnology
Srinivas Hanasoge, Peter J. Hesketh, Alexander Alexeev
ACS APPLIED MATERIALS & INTERFACES
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Ardalan Lotfi, Christopher A. Heist, Alexander Warren, Milad Navaei, Peter J. Hesketh
Article
Electrochemistry
Morgan J. Anderson, Jessica E. Koehne, Peter J. Hesketh
ELECTROCHEMICAL SOCIETY INTERFACE
(2019)
Editorial Material
Electrochemistry
Peter J. Hesketh, Joseph Stetter, Xiangqun Zeng
ELECTROCHEMICAL SOCIETY INTERFACE
(2019)
Article
Materials Science, Multidisciplinary
Ardalan Lotfi, Milad Navaei, Peter J. Hesketh
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Daniel Struk, Chintan Buch, Peter J. Hesketh, Klaus-Juergen Wolter, Rao Tummala
2017 IEEE 67TH ELECTRONIC COMPONENTS AND TECHNOLOGY CONFERENCE (ECTC 2017)
(2017)
Review
Electrochemistry
Gary W. Hunter, Sheikh Akbar, Shekhar Bhansali, Michael Daniele, Patrick D. Erb, Kevin Johnson, Chung-Chiun Liu, Derek Miller, Omer Oralkan, Peter J. Hesketh, Pandiaraj Manickam, Randy L. Vander Wal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2020)
