HardwareX最新文献_第6页

A portable low-cost polymerase chain reaction device 一种便携式低成本聚合酶链式反应装置

IF 2

HardwareX Pub Date : 2025-03-01 DOI: 10.1016/j.ohx.2025.e00635

Kan Luo , Wei Cheng , Yu Chen , Qirong Zhang , Chaobing Liang , Jianxing Li , Wu Wang

{"title":"A portable low-cost polymerase chain reaction device","authors":"Kan Luo , Wei Cheng , Yu Chen , Qirong Zhang , Chaobing Liang , Jianxing Li , Wu Wang","doi":"10.1016/j.ohx.2025.e00635","DOIUrl":"10.1016/j.ohx.2025.e00635","url":null,"abstract":"<div><div>Polymerase chain reaction (PCR) is a cornerstone technique in molecular biology and clinical diagnostics. However, conventional PCR systems are often bulky and prohibitively expensive, limiting their use in resource-limited settings. In this work, we present a portable, low-cost PCR instrument designed to overcome these challenges while providing fast and accurate thermal cycling. The system features a compact four-well aluminum heating block integrated with a semiconductor thermoelectric cooler and a heated lid, all controlled via an Arduino UNO platform and a piecewise variable coefficient PID algorithm. The device achieves heating and cooling rates of 1.78 °C/s and 1.52 °C/s, respectively, and maintains temperature accuracy within ± 0.55 °C. The power-bank powered prototype measures 210 × 140 × 105 mm<sup>3</sup> and weighs 670 g, making it ideal for resource-constrained applications. Validation experiments, including successful amplification of kelp genes, yielded results comparable to conventional commercial instruments. Open source design files and detailed build instructions are provided under the MIT license, providing a cost-effective and accessible solution for expanding molecular diagnostic capabilities in resource-limited settings.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00635"},"PeriodicalIF":2.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Portable pressure chamber for manual camera-assisted monitoring of leaf water potential 用于手动相机辅助监测叶片水势的便携式压力室

IF 2

HardwareX Pub Date : 2025-03-01 DOI: 10.1016/j.ohx.2025.e00632

Willian Viana Campos , José Teixeira Filho , Alcebiades Rebouças São José

{"title":"Portable pressure chamber for manual camera-assisted monitoring of leaf water potential","authors":"Willian Viana Campos , José Teixeira Filho , Alcebiades Rebouças São José","doi":"10.1016/j.ohx.2025.e00632","DOIUrl":"10.1016/j.ohx.2025.e00632","url":null,"abstract":"<div><div>This paper presents a detailed description of the assembly and components of a pressure chamber used to measure leaf water potential in leaves, particularly in african mahogany. The assembly and components of this pressure chamber were specifically designed for field experiments. The image capture camera plays a crucial role in recording changes occurring in the sample during measurements. It can also be coupled with image analysis devices to quantify alterations in leaf cells and stomata under varying pressure levels. A cylindrical acrylic support ensures the stability of the camera during the procedure, providing additional protection. The pressure chamber assembly is designed to securely accommodate leaves during measurements, facilitating the manipulation of gas levels and enabling the creation of a controlled atmosphere within the chamber. The sealing valve is an essential component, allowing precise control of internal pressure, preventing leaks, and enabling the study of plant responses under different atmospheric conditions. This pressure chamber proven to be a valuable tool in plant ecophysiology, enabling precise monitoring of plant responses to diverse environmental conditions. Consequently, it contributes significantly to the conservation and sustainable management of african mahogany and other plant species in their natural environments.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00632"},"PeriodicalIF":2.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ScientISST CORE: A novel hardware development platform for biomedical engineering ScientISST CORE：生物医学工程新型硬件开发平台

IF 2

HardwareX Pub Date : 2025-02-17 DOI: 10.1016/j.ohx.2025.e00630

Leonor Pereira , Francisco de Melo , Frederico Almeida Santos , Afonso Fortes Ferreira , Hugo Plácido da Silva

{"title":"ScientISST CORE: A novel hardware development platform for biomedical engineering","authors":"Leonor Pereira , Francisco de Melo , Frederico Almeida Santos , Afonso Fortes Ferreira , Hugo Plácido da Silva","doi":"10.1016/j.ohx.2025.e00630","DOIUrl":"10.1016/j.ohx.2025.e00630","url":null,"abstract":"<div><div>Today, the use of biosignals is no longer limited to the traditional healthcare and medical domains, thanks to the application of biomedical engineering principles and devices in other domains, paving the way to the broader field of physiological computing. The increasing interest from the global engineering community, together with the challenges associated with the stringent requirements of biosignal acquisition, have motivated the development of enabling low-cost instruments for physiological sensing. Still, the use of some of these instruments in experimental activities and practical projects is still bounded by the cost and limited access to adequate support materials. In this paper, we present a novel low-cost hardware architecture especially designed for biosignal acquisition, and pre-programmed with a firmware optimized for real-time data acquisition and streaming. Our approach can be used seamlessly with available open-source software and APIs, without requiring extensive knowledge of electronics or programming. We also describe a series of tests conducted to evaluate the performance of this device, as a way of verifying its suitability for use in engineering and scientific work. Overall, the results presented here show that there is no loss of data in communication, accurate sampling rates, and high noise rejection capabilities in the tested conditions.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00630"},"PeriodicalIF":2.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A portable electrical impedance tomography based pressure mapping sensor and force localisation validation system 一种便携式电阻抗断层成像压力映射传感器和力定位验证系统

IF 2

HardwareX Pub Date : 2025-02-12 DOI: 10.1016/j.ohx.2025.e00628

Richie Ellingham , Lui Holder-Pearson , Chris Pretty , Tim Giffney

{"title":"A portable electrical impedance tomography based pressure mapping sensor and force localisation validation system","authors":"Richie Ellingham , Lui Holder-Pearson , Chris Pretty , Tim Giffney","doi":"10.1016/j.ohx.2025.e00628","DOIUrl":"10.1016/j.ohx.2025.e00628","url":null,"abstract":"<div><div>This work presents portable, low-cost hardware for pressure mapping using EIT-based soft sensors. An important part of developing these EIT-based pressure sensors is the sensor characterisation. Therefore, this work also provides the design of a system for characterising and validating the spatial, pressure, and temporal performance of different soft sensor material domains. The system is capable of driving soft EIT-based sensors using a range of sensing materials, shapes, and configurations. The hardware allows for the wireless transmission of EIT data to a remote device. A data capture frame rate of 12.7 Hz allows for the analysis of dynamic events. The maximum current drive voltage is ±22 V and a voltage read resolution of <span><math><mrow><mo>±</mo><mn>0</mn><mo>.</mo><mn>3</mn><mi>μ</mi><mi>V</mi></mrow></math></span> allowing for a range of sensing domain sizes, thicknesses, and materials. A Cartesian force applicator device has been developed for the automated pressure mapping sensor characterisation which can apply and sense loads from 0 to 100 N with a resolution of ±50 mN at rates of 0 - 800 mm/min. Loads can be applied with an error of ±0.01 mm. A standardised method has been provided for researchers to experiment with a range of different sensing domain materials and shapes. The system described in this work is suitable for both research and practical applications, making it a valuable tool for advancing the field of EIT-based soft pressure mapping sensor technology.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00628"},"PeriodicalIF":2.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

All Iron Battery 3.0 全铁电池3.0

IF 2

HardwareX Pub Date : 2025-02-03 DOI: 10.1016/j.ohx.2025.e00629

Dipak Koirala , Surendra K. Gautam , I. Francis Cheng , Peter B. Allen

引用次数: 0

Low cost rotating disc electrode built using accessible hand tools and 3D printing 低成本的旋转圆盘电极使用可访问的手动工具和3D打印

IF 2

HardwareX Pub Date : 2025-01-31 DOI: 10.1016/j.ohx.2025.e00626

Adam Shnier, Tarisai Velempini, Anzel Falch

引用次数: 0

MEMS measurement microphone compatible to P48 amplifiers MEMS测量麦克风兼容P48放大器

IF 2

HardwareX Pub Date : 2025-01-30 DOI: 10.1016/j.ohx.2025.e00627

F. Huber, F. Toth

引用次数: 0

An affordable and adaptable Faraday isolator design for research 一种经济实惠、适应性强的研究用法拉第隔离器设计

IF 2

HardwareX Pub Date : 2025-01-24 DOI: 10.1016/j.ohx.2025.e00623

Nicholas L. Wong, Ben Delaney, Takanori Miyazaki, Emma Sokell, Fergal O’Reilly

{"title":"An affordable and adaptable Faraday isolator design for research","authors":"Nicholas L. Wong, Ben Delaney, Takanori Miyazaki, Emma Sokell, Fergal O’Reilly","doi":"10.1016/j.ohx.2025.e00623","DOIUrl":"10.1016/j.ohx.2025.e00623","url":null,"abstract":"<div><div>Presented here is an affordable Faraday isolator designed to account for conditions of high pulse energy and high total power lasers, with a clear input aperture allowing beam diameters up to 12 mm, and pulse energies and total powers limited by the dielectric crystal. This Faraday isolator is meant for laboratories with limited resources yet still need the features of commercial Faraday isolators. The design consists of a 3D printed mount housing seven permanent neodymium ring magnets, a Terbium Gallium Garnet (TGG) dielectric crystal, and two polarizing beam splitter cubes. Additionally, the design is customizable for different laser parameters, with the presented example isolator made for 1064 nm lasers. Measurements of the extinction ratio and a Stokes parameter analysis from different points within the isolator validated and characterized the constructed Faraday isolator. The final design had a measured minimum extinction ratio of <span><math><mrow><mn>31</mn><mo>.</mo><mn>5</mn><mo>±</mo><mn>0</mn><mo>.</mo><mn>3</mn></mrow></math></span> dB and a maximum of <span><math><mrow><mn>39</mn><mo>.</mo><mn>9</mn><mo>±</mo><mn>0</mn><mo>.</mo><mn>2</mn></mrow></math></span> dB depending on the polarization of back reflected light.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00623"},"PeriodicalIF":2.0,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A low-cost autonomous and scalable hydroponics system for space farming 用于太空农业的低成本自主可扩展水培系统

IF 2

HardwareX Pub Date : 2025-01-18 DOI: 10.1016/j.ohx.2025.e00625

Jae Hyeon Ryu , Jeonghyun Baek , Zarin Subah

{"title":"A low-cost autonomous and scalable hydroponics system for space farming","authors":"Jae Hyeon Ryu , Jeonghyun Baek , Zarin Subah","doi":"10.1016/j.ohx.2025.e00625","DOIUrl":"10.1016/j.ohx.2025.e00625","url":null,"abstract":"<div><div>An alternative food production system using hydroponics is proposed to grow vegetables in a controlled environment that is implementable in space. The proposed system is an autonomous, modular, scalable, and soilless food production platform (ASFP) that can be installed in a spacecraft by meeting requirements and constraints set by the National Aeronautics and Space Administration (NASA). A suite of Internet of Things (IoT) sensors was used to monitor indoor climate as well as water quality in ASFP. Average values of air temperature and relative humidity in the environmentally-controlled room are maintained between 20–24 °C and 48–62 %, while water quality components, including dissolved oxygen (DO, ppm), electrical conductivity (EC, µS/m), pH, and water temperature (WT, Celsius) are monitored by the IoT sensor in real-time during the growing period. Repeated measure analysis is also performed to evaluate the plant growth performance. The result indicates that plant growth is attributed significantly to pH and EC values. A real-time data visualization and sharing platform is another avenue for the space farming ecosystem in the years to come.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00625"},"PeriodicalIF":2.0,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spi-VSTL: Image data collection platform using off-the shelf hardware for vertically supported crops in state-of-the-art glasshouses Spi-VSTL：使用现成硬件的图像数据收集平台，用于最先进的温室中垂直支撑的作物

IF 2

HardwareX Pub Date : 2025-01-15 DOI: 10.1016/j.ohx.2025.e00624

Namal Jayasuriya , Malith Weerasekara , Oula Ghannoum , Yi Guo , Wen Hu

{"title":"Spi-VSTL: Image data collection platform using off-the shelf hardware for vertically supported crops in state-of-the-art glasshouses","authors":"Namal Jayasuriya , Malith Weerasekara , Oula Ghannoum , Yi Guo , Wen Hu","doi":"10.1016/j.ohx.2025.e00624","DOIUrl":"10.1016/j.ohx.2025.e00624","url":null,"abstract":"<div><div>Horticulture crop growers are moving from conventional to protected crops, aiming for quality food production utilising fewer resources. Skilled labour for monitoring and maintaining crops in these compact environments has been identified as a major cost and can be reduced using automated image-based crop monitoring. There is a range of protected cropping infrastructures targeting different types of crops. Image data collection platforms are needed to be tailored according to the infrastructure and nature of the crop. Available research or commercial-purpose image data collection platforms for indoor crops are mostly targeted at movable and small plants compared to vertically supported tall plants. Customising existing commercial systems for this specific type of crop is costly. This paper proposes a low-cost image data collection platform for monitoring vertically supported tall crops in order to reduce labour costs while expanding the monitoring tasks for maintaining better crop growth. Off-the-shelf hardware and electronic components accessible from Australia are used for this development. The proposed platform runs manually on concrete flow and on pipe rail systems found in state-of-the-art commercial glasshouse settings. The proposed motorised platform has been tested with 30 kg, and speed was measured as an average minimum of 0.06 ms<sup>−1</sup> and an average maximum of 0.47 ms<sup>−1</sup>. The usability of the proposed design has been proved with a published data set and research on plant height estimation. Other use cases and room for further development are also discussed.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00624"},"PeriodicalIF":2.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0