HardwareX最新文献_第9页

Plasma-based optical fiber tapering rig 基于等离子体的光纤锥形钻机

IF 2

HardwareX Pub Date : 2024-09-01 DOI: 10.1016/j.ohx.2024.e00578

L.F. Granados-Zambrano , J.P. Korterik , J.M. Estudillo-Ayala , R. Rojas Laguna , D. Jauregui-Vazquez , H.L. Offerhaus , J.A. Alvarez-Chavez

{"title":"Plasma-based optical fiber tapering rig","authors":"L.F. Granados-Zambrano , J.P. Korterik , J.M. Estudillo-Ayala , R. Rojas Laguna , D. Jauregui-Vazquez , H.L. Offerhaus , J.A. Alvarez-Chavez","doi":"10.1016/j.ohx.2024.e00578","DOIUrl":"10.1016/j.ohx.2024.e00578","url":null,"abstract":"<div><p>Optical fiber tapers have been widely proposed and demonstrated as reliable optical fiber structures for sensing, lasers, and supercontinuum generation applications. This paper proposes an innovative approach to fabricating optical fiber tapers using plasma as the heat source. From our literature review, and to the best of our knowledge, this is the first time that plasma has been used as the heat source for producing optical fiber tapers. The system is not intricate and simple to replicate. Moreover, the elements involved make this machine attractive to research groups devoted to optical fibers. The setup consistently generates robust biconical optical fiber tapers. A typical waist of ∼8 μm and taper lengths ranging from 3 to 15 mm are achieved. Our results showed tapers with interference fringes up to 12 dB, from 1465 nm to 1599 nm. Furthermore, the statistical evaluation presented demonstrates a good level of reproducibility in our tapering process.</p></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"19 ","pages":"Article e00578"},"PeriodicalIF":2.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2468067224000725/pdfft?md5=a702d507f37ac87f9313171c9429b7f7&pid=1-s2.0-S2468067224000725-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142129948","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

AUTORECYCLER: Prototype based on artificial vision to automate the material classification process (Plastic, Glass, Cardboard and Metal) AUTORECYCLER：基于人工视觉的原型，用于自动进行材料分类（塑料、玻璃、纸板和金属）。

IF 2

HardwareX Pub Date : 2024-09-01 DOI: 10.1016/j.ohx.2024.e00575

Anggie P. Echeverry , Carlos F. López

{"title":"AUTORECYCLER: Prototype based on artificial vision to automate the material classification process (Plastic, Glass, Cardboard and Metal)","authors":"Anggie P. Echeverry , Carlos F. López","doi":"10.1016/j.ohx.2024.e00575","DOIUrl":"10.1016/j.ohx.2024.e00575","url":null,"abstract":"<div><p>Environmental protection has gained greater importance over time due to the negative impact and irreversible consequences that have occurred worldwide and stem from pollution. One of the great challenges faced in different parts of the world is the inadequate management and classification of solid waste. In order to contribute to tackling this issue, this paper proposes an automated sorting system based on artificial vision which allows recognition and separation of recyclable materials (Plastic, Glass, Cardboard and Metal) through a webcam connected in real time to the Nvidia® Jetson Nano™ 2 GB programming board, which has a convolutional neural network (CNN) trained for the proper classification of waste. The system had a 95 % accuracy in separating plastic, 96 % in glass and metal, and 94 % in cardboard. With this in mind, we conclude it contributes to the recycling effort, which has an impact on the reduction of environmental pollution worldwide.</p></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"19 ","pages":"Article e00575"},"PeriodicalIF":2.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2468067224000695/pdfft?md5=4afa327ad0be22153064f4735719a2d9&pid=1-s2.0-S2468067224000695-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142149832","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

CARETestLung: A mechanical test lung with Configurable airway Resistance, lung Elastance, and breathing efforts CARETestLung：可配置气道阻力、肺弹性和呼吸强度的机械测试肺

IF 2

HardwareX Pub Date : 2024-09-01 DOI: 10.1016/j.ohx.2024.e00579

Wei Yang Tay , Christopher Yew Shuen Ang , Yeong Shiong Chiew , J. Geoffrey Chase

{"title":"CARETestLung: A mechanical test lung with Configurable airway Resistance, lung Elastance, and breathing efforts","authors":"Wei Yang Tay , Christopher Yew Shuen Ang , Yeong Shiong Chiew , J. Geoffrey Chase","doi":"10.1016/j.ohx.2024.e00579","DOIUrl":"10.1016/j.ohx.2024.e00579","url":null,"abstract":"<div><p>A mechanical test lung is a crucial tool in accurately simulating patient-specific physiological responses of patients undergoing mechanical ventilation (MV), which, in turn, offer clinicians insight into lung mechanics during MV. In particular, it can be used to facilitate better methods to identify optimal ventilator settings, modes for individual patients by providing a platform to experiment with different MV settings. This addresses the challenge of optimising MV settings caused by variability in pathological conditions and the progression of respiratory disease over time within patients. However, the accessibility and cost of versatile test lungs limit widespread adoption in clinical settings, underscoring the need for affordable alternatives. This paper presents detailed instructions for the design and construction of a replicable, cost-effective mechanical test lung. The design features 3 subsystems: 1) the lung compartment; 2) the airway; and 3) a spontaneous breathing system. A detailed tests series shows its ability to replicate clinically realistic lung elastance values ranging from 25 to 85 cmH<sub>2</sub>O/L and airway resistance values from 10 to 45 cmH<sub>2</sub>O·s/L. It can also simulate a range of clinically realistic spontaneous breathing patterns. These capabilities yield pressure and flow ventilation data comparable to certified clinical test lungs across diverse scenarios, as well as matching clinically observed behaviours and dynamics. This accessible and versatile test lung offers valuable opportunities for optimising MV settings and advancing patient care, as well as its use in developing a range of physiological models for model-based decision support.</p></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"19 ","pages":"Article e00579"},"PeriodicalIF":2.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2468067224000737/pdfft?md5=78a49d0c8a769a23258c39415bf8eb2a&pid=1-s2.0-S2468067224000737-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142117683","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

Open Photonics: An integrated approach for building a 3D-printed motorized rotation stage system 开放光子学：构建 3D 打印电动旋转平台系统的集成方法

IF 2

HardwareX Pub Date : 2024-08-28 DOI: 10.1016/j.ohx.2024.e00577

Yannic Toschke , Jan Klenen , Mirco Imlau

{"title":"Open Photonics: An integrated approach for building a 3D-printed motorized rotation stage system","authors":"Yannic Toschke , Jan Klenen , Mirco Imlau","doi":"10.1016/j.ohx.2024.e00577","DOIUrl":"10.1016/j.ohx.2024.e00577","url":null,"abstract":"<div><p>In the context of experimental optics- and photonics-research, motorized, high-precision rotation stages are an integral part of almost every laboratory setup. Nevertheless, their availability in the laboratory is limited due to the relatively high acquisition costs in the range of several 1000€ and is often supplemented by manual rotation stages. If only a single sample is to be analyzed repeatedly at two different angles or the polarization of a laser source is to be rotated, this approach is understandable. Yet, in the context of automation and the associated gain in measurement time, cost-effective and precise rotation stages designed for the use of optics are lacking.</p><p>We present a low-cost alternative of a motorized high precision rotation stage system. The design is based on a combination of 3D-printed components, which form the monolithic mechanical framework, and a stepper motor controlled by an ESP32 based microcontroller. By coupling the motor and rotation unit via a toothed belt, backlash is minimized and at the same time high positioning accuracy can be achieved. Finally, the implementation of remote procedure calls for serial communication and the utilization of a physical home switch and incremental encoder complete the desired feature set of an integrated system for laboratory setups. The total costs can thus be reduced to less than 100€ without significantly restricting the performance criteria.</p></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"20 ","pages":"Article e00577"},"PeriodicalIF":2.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2468067224000713/pdfft?md5=61cd481c35a35949d76e0620bb7be30a&pid=1-s2.0-S2468067224000713-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142136661","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

Development of a robotic-assisted handling and manipulation system for the high-scale bioproduction of 3D-bioprinted organ-on-a-chip devices 开发用于大规模生物生产三维生物打印片上器官设备的机器人辅助处理和操纵系统

IF 2

HardwareX Pub Date : 2024-08-22 DOI: 10.1016/j.ohx.2024.e00572

Nils Lindner , Andres Mejia-Wille , Anna Fritschen , Andreas Blaeser

{"title":"Development of a robotic-assisted handling and manipulation system for the high-scale bioproduction of 3D-bioprinted organ-on-a-chip devices","authors":"Nils Lindner , Andres Mejia-Wille , Anna Fritschen , Andreas Blaeser","doi":"10.1016/j.ohx.2024.e00572","DOIUrl":"10.1016/j.ohx.2024.e00572","url":null,"abstract":"<div><p>Organs-on-a-chip (OoCs) have proven to mimic the basic physiological behavior of organs and the influence of therapeutics on them in greater detail than conventional models, resulting in enormous projected market growth rates. However, the breakthrough to profitable commercialization of that technology has not yet been achieved, partly because the production process chain is characterized by a high proportion of manual laboratory work. The present work addresses this point. Utilizing affordable components, a demonstrator was developed that can be integrated into an existing 3D-bioprinting system and enables the automated production of perfusion-ready OoC devices starting from pre-fabricated injection-molded microfluidic chips. To this end, a corresponding process chain was first defined, and an expandable, configurable algorithm was developed and validated in the form of a finite state machine (FSM). This algorithm controls a modified 4-axis robot arm that covers the steps upstream and downstream of the printing process in the manufacturing process and achieves success rates of up to 100 %. A virtual interface between the robot and printer enables mutual communication and full integration of the algorithm into the process chain. Steps that pose a challenge for the automation of the process chain and appropriate countermeasures and optimizations were identified. This lays the foundation for scaling and standardizing the automated production of OoCs.</p></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"19 ","pages":"Article e00572"},"PeriodicalIF":2.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S246806722400066X/pdfft?md5=9cc74006f150a61876809147fee64423&pid=1-s2.0-S246806722400066X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049287","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 customizable digital holographic microscope 可定制的数字全息显微镜

IF 2

HardwareX Pub Date : 2024-08-13 DOI: 10.1016/j.ohx.2024.e00569

Claudia Ravasio , Luca Teruzzi , Mirko Siano , Llorenç Cremonesi , Bruno Paroli , Marco A.C. Potenza

{"title":"A customizable digital holographic microscope","authors":"Claudia Ravasio , Luca Teruzzi , Mirko Siano , Llorenç Cremonesi , Bruno Paroli , Marco A.C. Potenza","doi":"10.1016/j.ohx.2024.e00569","DOIUrl":"10.1016/j.ohx.2024.e00569","url":null,"abstract":"<div><p>We propose a compact, portable, and low-cost holographic microscope designed for the characterization of micrometric particles suspended in a liquid. This system is built around a commercial optical microscope by substituting its illumination source (a light-emitting diode) with a collimated laser beam. Similarly, a quartz flow cell replaces the microscope glass slide using a 3D-printed custom mount. With the hardware presented in this paper, the holographic imaging of the electromagnetic fields emitted by the particles that intercept the laser beam achieves a resolution close to that of optical microscopes but with a greater depth of field. Several morphological and optical features can be extracted from the holograms, including particle projected section, aspect ratio, and extinction cross-section. Additionally, we introduce a remote system control that enables users to process the acquired holograms on a remote computational device. This work provides a comprehensive description of the methodology of image processing in holographic microscopy and a series of validation measurements conducted using calibrated particles. This technique is suitable for the characterization of airborne particles found in snow, firn, and ice; here we report experimental results obtained from Alpine ice cores.</p></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"19 ","pages":"Article e00569"},"PeriodicalIF":2.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2468067224000634/pdfft?md5=32242a7fc54507f92b0df2177c6c2c1f&pid=1-s2.0-S2468067224000634-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142006901","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

OpenHW3 – An open-source, low-cost temperature-controlled orbital shaker OpenHW3 - 一种开源、低成本的温控轨道振动器

IF 2

HardwareX Pub Date : 2024-08-13 DOI: 10.1016/j.ohx.2024.e00570

Matthew Hollingham, Yi Xiang, Titus Reed, Juan Pablo Gevaudan

{"title":"OpenHW3 – An open-source, low-cost temperature-controlled orbital shaker","authors":"Matthew Hollingham, Yi Xiang, Titus Reed, Juan Pablo Gevaudan","doi":"10.1016/j.ohx.2024.e00570","DOIUrl":"10.1016/j.ohx.2024.e00570","url":null,"abstract":"<div><p>The current lack of standardized testing methods to assess the binding isotherms of ions in cement and concrete research leads to uncontrolled variability in these results. In this study, an open-source and low-cost apparatus, named OpenHW3, is proposed to accurately measure the binding isotherms of ions in various cementitious material systems. OpenHW3 provides two main options, a temperature-controlled orbital shaker, as well as an option to retrofit a commercial orbital shaker for temperature control. The effectiveness of these device options is validated via comparison with conventional binding isotherms experiments. The binding isotherm results were comparable to conventional Waterbath shakers, while providing more reliable results compared to horizontal commercial shakers. It also provided accurate temperature control between 25 °C and 75 °C. The results here are critical for allowing open access to scientific equipment, and providing high-quality binding isotherm data for reliable service life models of urban infrastructure assets throughout the world.</p></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"19 ","pages":"Article e00570"},"PeriodicalIF":2.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2468067224000646/pdfft?md5=a9e5ffd97c71660aaf2bf133dcfc7023&pid=1-s2.0-S2468067224000646-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021406","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

Low-cost, mobile EEG hardware for SSVEP applications 用于 SSVEP 应用的低成本移动脑电图硬件

IF 2

HardwareX Pub Date : 2024-08-10 DOI: 10.1016/j.ohx.2024.e00567

M. Kancaoğlu, M. Kuntalp

{"title":"Low-cost, mobile EEG hardware for SSVEP applications","authors":"M. Kancaoğlu, M. Kuntalp","doi":"10.1016/j.ohx.2024.e00567","DOIUrl":"10.1016/j.ohx.2024.e00567","url":null,"abstract":"<div><p>The global shortage of integrated circuits due to the COVID-19 pandemic has made it challenging to build biopotential acquisition devices like electroencephalography (EEG) hardware. To address this issue, a new hardware system using common ICs has been designed, which is cost-effective, precise, and easily accessible from global distributors. The hardware system comprises 8-channel inputs EEG hardware with a mobile headset capable of acquiring 5-30Hz EEG signals. First two channels of the design is enabled for steady-state visual evoked potential (SSVEP) operations, and the remaining channels can be powered up as needed. A small 3D-printable enclosure is also designed for the hardware board, which is attached to protective glasses to be used as a head-mounted device. The board includes an additional green LED, 4 pulse width modulation (PWM) outputs for general-purpose input/output (GPIO), 2 buttons for input, and exposed programming pins and digital-to-analog converter (DAC) output from the microcontroller unit (MCU). The proposed hardware system is expected to enable students and young researchers to experiment with EEG signals, especially SSVEP, before investing in professional equipment with the availability of programming codes.</p></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"19 ","pages":"Article e00567"},"PeriodicalIF":2.0,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2468067224000610/pdfft?md5=b46ca8b5f6ff44237844514be70a75d3&pid=1-s2.0-S2468067224000610-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142011865","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

Open-source cold and hot scientific sheet press for investigating polymer-based material properties 用于研究聚合物材料性能的开源冷热科学片材压机

IF 2

HardwareX Pub Date : 2024-08-08 DOI: 10.1016/j.ohx.2024.e00566

Morgan C. Woods , Cameron K. Brooks , Joshua M. Pearce

{"title":"Open-source cold and hot scientific sheet press for investigating polymer-based material properties","authors":"Morgan C. Woods , Cameron K. Brooks , Joshua M. Pearce","doi":"10.1016/j.ohx.2024.e00566","DOIUrl":"10.1016/j.ohx.2024.e00566","url":null,"abstract":"<div><p>To produce samples for both material testing and molded sheets/parts, this article details an open-source scientific cold and hot press design. It consists of two independent and modular upper and lower plate (929 cm<sup>2</sup>) assemblies each containing four 125 W insulated steel strip heaters. The steel housing for these heaters is entirely modular and designed for ease of manufacture, assembly, and customization. This system allows a researcher with access to a hydraulic press to repurpose existing equipment into a multipurpose hot and cold press, or if an independent machine is warranted, an additional welded support frame and commercially available bottle jack offer standalone operation. By utilizing this small-scale hot press either in conjunction with a hydraulic press or on its own, samples can be produced to determine the critical material properties of any polymer, composite, or polymer blend. A series of modular molds allow for the rapid production of flat sheet stock and solid testing samples adhering to the ASTM D695 standard for rigid plastics tested in compression and ASTM D638 standard for testing plastics in tension. The sheet mold offers the user the ability to produce stock sheets that can be cut and assembled into 2.5-D applications with post processing.</p></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"19 ","pages":"Article e00566"},"PeriodicalIF":2.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2468067224000609/pdfft?md5=fcdc3df69632c08ca4f761cf1e1b9b39&pid=1-s2.0-S2468067224000609-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142002114","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

Design and construction of a low-cost compressive loading and perfusion flow bioreactor 设计和建造低成本压缩加载和灌注流生物反应器

IF 2

HardwareX Pub Date : 2024-07-25 DOI: 10.1016/j.ohx.2024.e00565

Alexis Graham , Charlotte Thompson , Darrock Flynn , Honor Elchos , Jaydon Gibson , Lauren B. Priddy , Matthew W. Priddy

引用次数: 0