1
|
Ghaffari A, Hojjat Y. Simultaneous rotary and linear displacement sensor based on soft pneumatic sensing chambers. Sci Rep 2024; 14:8317. [PMID: 38594326 PMCID: PMC11004004 DOI: 10.1038/s41598-024-59168-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 04/08/2024] [Indexed: 04/11/2024] Open
Abstract
Specific industrial or research applications necessitate specialized displacement measurement conditions, thereby driving researchers to innovate sensors based on novel operating principles. One such challenging condition is the prevalence of strong electromagnetic waves, which precludes using any sensor with a metallic structure or one that operates on electrical measurement principles. Additionally, space constraints in applications requiring multidimensional displacement measurements mandate the development of sensors capable of measuring displacements simultaneously in multiple directions. This paper introduces a novel soft sensor designed to simultaneously measure linear and rotational displacements using Soft Pneumatic Sensing Chambers (SPSCs). This sensor is unique in its ability to measure both linear and rotational movements and, due to its Electro-Magnetic Compatibility (EMC) and compact size, is suitable for environments with significant electromagnetic interference and spatial constraints. Furthermore, its flexibility makes it appropriate for body-interacting applications. The Abaqus software was employed to optimize the operating parameters. Subsequently, a laboratory setup was assembled, and the sensor's performance was assessed using two calibration methods: mathematical modeling and machine learning. According to the machine learning method, the accuracy in the linear and rotational directions was 0.49 mm and 5.4°, while the Root Mean Square Error (RMSE) was 0.05mm and 0.48°, respectively.
Collapse
Affiliation(s)
- Alireza Ghaffari
- Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran
| | - Yousef Hojjat
- Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran.
| |
Collapse
|
2
|
Wang J, Jiang H, Pan L, Gu X, Xiao C, Liu P, Tang Y, Fang J, Li X, Lu C. Rapid on-site nucleic acid testing: On-chip sample preparation, amplification, and detection, and their integration into all-in-one systems. Front Bioeng Biotechnol 2023; 11:1020430. [PMID: 36815884 PMCID: PMC9930993 DOI: 10.3389/fbioe.2023.1020430] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 01/12/2023] [Indexed: 02/04/2023] Open
Abstract
As nucleic acid testing is playing a vital role in increasingly many research fields, the need for rapid on-site testing methods is also increasing. The test procedure often consists of three steps: Sample preparation, amplification, and detection. This review covers recent advances in on-chip methods for each of these three steps and explains the principles underlying related methods. The sample preparation process is further divided into cell lysis and nucleic acid purification, and methods for the integration of these two steps on a single chip are discussed. Under amplification, on-chip studies based on PCR and isothermal amplification are covered. Three isothermal amplification methods reported to have good resistance to PCR inhibitors are selected for discussion due to their potential for use in direct amplification. Chip designs and novel strategies employed to achieve rapid extraction/amplification with satisfactory efficiency are discussed. Four detection methods providing rapid responses (fluorescent, optical, and electrochemical detection methods, plus lateral flow assay) are evaluated for their potential in rapid on-site detection. In the final section, we discuss strategies to improve the speed of the entire procedure and to integrate all three steps onto a single chip; we also comment on recent advances, and on obstacles to reducing the cost of chip manufacture and achieving mass production. We conclude that future trends will focus on effective nucleic acid extraction via combined methods and direct amplification via isothermal methods.
Collapse
Affiliation(s)
- Jingwen Wang
- Key Laboratory of Specialty Agri-products Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Han Jiang
- Key Laboratory of Specialty Agri-products Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Leiming Pan
- Zhejiang Hongzheng Testing Co., Ltd., Ningbo, China
| | - Xiuying Gu
- Zhejiang Gongzheng Testing Center Co., Ltd., Hangzhou, China
| | - Chaogeng Xiao
- Institute of Food Science, Zhejiang Academy of Agricultural Science, Hangzhou, China
| | - Pengpeng Liu
- Key Laboratory of Biosafety detection for Zhejiang Market Regulation, Zhejiang Fangyuan Testing Group LO.T, Hangzhou, China
| | - Yulong Tang
- Hangzhou Tiannie Technology Co., Ltd., Hangzhou, China
| | - Jiehong Fang
- Key Laboratory of Specialty Agri-products Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Xiaoqian Li
- Key Laboratory of Specialty Agri-products Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Chenze Lu
- Key Laboratory of Specialty Agri-products Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
| |
Collapse
|
3
|
Hung MS, Ho CC, Chen CP. Laser-induced heating integrated with a microfluidic platform for real-time DNA replication and detection. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:87003. [PMID: 27533446 DOI: 10.1117/1.jbo.21.8.087003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 07/27/2016] [Indexed: 05/05/2023]
Abstract
This study developed a microfluidic platform for replicating and detecting DNA in real time by integrating a laser and a microfluidic device composed of polydimethylsiloxane. The design of the microchannels consisted of a laser-heating area and a detection area. An infrared laser was used as the heating source for DNA replication, and the laser power was adjusted to heat the solutions directly. In addition, strong biotin–avidin binding was used to capture and detect the replicated products. The biotin on one end was bound to avidin and anchored to the surface of the microchannels, whereas the biotin on the other end was bound to the quantum dots (Qdots). The results showed that the fluorescent intensity of the Qdots bound to the replicated products in the detection area increased with the number of thermal cycles created by the laser. When the number of thermal cycles was ≥10, the fluorescent intensity of the Qdots was directly detectable on the surface of the microchannels. The proposed method is more sensitive than detection methods entailing gel electrophoresis.
Collapse
Affiliation(s)
- Min-Sheng Hung
- National Chiayi University, Department of Biomechatronic Engineering, No. 300 Syuefu Road, Chiayi 60004, Taiwan
| | - Chia-Chin Ho
- Chip Win Technology Co., Ltd., Biomedical and Advanced Systems Integration, No. 18 Sec. 2, Seng Yi Road, Zhubei City, Hsinchu 30261, Taiwan
| | - Chih-Pin Chen
- National Chiayi University, Department of Biomechatronic Engineering, No. 300 Syuefu Road, Chiayi 60004, Taiwan
| |
Collapse
|
4
|
Parallel-processing continuous-flow device for optimization-free polymerase chain reaction. Anal Bioanal Chem 2016; 408:6751-8. [DOI: 10.1007/s00216-016-9798-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 07/10/2016] [Accepted: 07/14/2016] [Indexed: 01/29/2023]
|
5
|
La M, Park SM, Kim DS. Centrifugal multiplexing fixed-volume dispenser on a plastic lab-on-a-disk for parallel biochemical single-end-point assays. BIOMICROFLUIDICS 2015; 9:014104. [PMID: 25610516 PMCID: PMC4297279 DOI: 10.1063/1.4905940] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 01/05/2015] [Indexed: 06/04/2023]
Abstract
In this study, a multiple sample dispenser for precisely metered fixed volumes was successfully designed, fabricated, and fully characterized on a plastic centrifugal lab-on-a-disk (LOD) for parallel biochemical single-end-point assays. The dispenser, namely, a centrifugal multiplexing fixed-volume dispenser (C-MUFID) was designed with microfluidic structures based on the theoretical modeling about a centrifugal circumferential filling flow. The designed LODs were fabricated with a polystyrene substrate through micromachining and they were thermally bonded with a flat substrate. Furthermore, six parallel metering and dispensing assays were conducted at the same fixed-volume (1.27 μl) with a relative variation of ±0.02 μl. Moreover, the samples were metered and dispensed at different sub-volumes. To visualize the metering and dispensing performances, the C-MUFID was integrated with a serpentine micromixer during parallel centrifugal mixing tests. Parallel biochemical single-end-point assays were successfully conducted on the developed LOD using a standard serum with albumin, glucose, and total protein reagents. The developed LOD could be widely applied to various biochemical single-end-point assays which require different volume ratios of the sample and reagent by controlling the design of the C-MUFID. The proposed LOD is feasible for point-of-care diagnostics because of its mass-producible structures, reliable metering/dispensing performance, and parallel biochemical single-end-point assays, which can identify numerous biochemical.
Collapse
Affiliation(s)
- Moonwoo La
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH) , Pohang 790-784, South Korea
| | - Sang Min Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH) , Pohang 790-784, South Korea
| | - Dong Sung Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH) , Pohang 790-784, South Korea
| |
Collapse
|
6
|
Amasia M, Kang SW, Banerjee D, Madou M. Experimental validation of numerical study on thermoelectric-based heating in an integrated centrifugal microfluidic platform for polymerase chain reaction amplification. BIOMICROFLUIDICS 2013; 7:14106. [PMID: 24403998 PMCID: PMC3574097 DOI: 10.1063/1.4789756] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 01/15/2013] [Indexed: 05/09/2023]
Abstract
A comprehensive study involving numerical analysis and experimental validation of temperature transients within a microchamber was performed for thermocycling operation in an integrated centrifugal microfluidic platform for polymerase chain reaction (PCR) amplification. Controlled heating and cooling of biological samples are essential processes in many sample preparation and detection steps for micro-total analysis systems. Specifically, the PCR process relies on highly controllable and uniform heating of nucleic acid samples for successful and efficient amplification. In these miniaturized systems, the heating process is often performed more rapidly, making the temperature control more difficult, and adding complexity to the integrated hardware system. To gain further insight into the complex temperature profiles within the PCR microchamber, numerical simulations using computational fluid dynamics and computational heat transfer were performed. The designed integrated centrifugal microfluidics platform utilizes thermoelectrics for ice-valving and thermocycling for PCR amplification. Embedded micro-thermocouples were used to record the static and dynamic thermal responses in the experiments. The data collected was subsequently used for computational validation of the numerical predictions for the system response during thermocycling, and these simulations were found to be in agreement with the experimental data to within ∼97%. When thermal contact resistance values were incorporated in the simulations, the numerical predictions were found to be in agreement with the experimental data to within ∼99.9%. This in-depth numerical modeling and experimental validation of a complex single-sided heating platform provide insights into hardware and system design for multi-layered polymer microfluidic systems. In addition, the biological capability along with the practical feasibility of the integrated system is demonstrated by successfully performing PCR amplification of a Group B Streptococcus gene.
Collapse
Affiliation(s)
- Mary Amasia
- Department of Mechanical Engineering, University of California, Irvine, California 92617, USA
| | - Seok-Won Kang
- Korea Railroad Research Institute, Uiwang, Gyeonggi-do 437-757, South Korea
| | - Debjyoti Banerjee
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77840, USA
| | - Marc Madou
- Department of Mechanical Engineering, University of California, Irvine, California 92617, USA
| |
Collapse
|