μdroPi: A Hand-Held Microfluidic Droplet Imager and Analyzer Built on Raspberry Pi

Sun, Meng; Li, Zhengda; Yang, Qiong

doi:10.1021/acs.jchemed.8b00975

Cited by 10 publications

(9 citation statements)

References 25 publications

(28 reference statements)

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“…This remote-control titration setup is based on a Raspberry Pi computer with a webcam and a servo. Raspberry Pi is a popular open-source computer that can be used in various scientific applications, including chemical education. − Students can simply remotely log in to the Raspberry Pi computer and control the turning of the stopcock via a servo with visual feedback through a camera module.…”

Section: Introductionmentioning

confidence: 99%

Titrate over the Internet: An Open-Source Remote-Control Titration Unit for All Students

et al. 2021

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Due to the COVID-19 pandemic, social distancing restrictions are in place in most public settings, and the undergraduate laboratory is no exception. In order to accommodate social distancing requirements, many laboratory exercises are being redeployed in an online format, which deprives students of experiential learning opportunities in a real laboratory setting. To bridge this experiential learning gap for online laboratory exercises, an open-source remote titration unit was created. This remote titration unit is based on a simple Raspberry Pi architecture equipped with a webcam and a servo (a small motor allowing fine control of angular position), allowing students to control the titration unit over the Internet with visual feedback of approximately a 0.5 s delay. Understanding that titrations are taught across all levels of chemistry, from high school to the postsecondary level, they are considered fundamental laboratory methods in analytical chemistry. In fact, titrations are the first analytical chemistry technique introduced to students, and the method holds a significant place in the chemistry curriculum. In response to the recent emphasis on virtual lab platforms due to COVID-19, the chemistry laboratory will need to evolve accordingly. The remote-control titration unit described here is an exemplar, showing that elements of experiential learning can be retained for online laboratory activities, and allows for the possibility of distanced learning that includes a meaningful laboratory component.

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Section: Introductionmentioning

confidence: 99%

Titrate over the Internet: An Open-Source Remote-Control Titration Unit for All Students

et al. 2021

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“…The pedagogical functions of microfluidics can be demonstrated by various kinds of experiments and activities, including demonstrations, laboratory experiments, inquiry-based laboratory/activities, comprehensive training, and project or problem-based learning on continuous flow, paper-based, and thread-based microfluidic devices. In recent years, teaching and learning of droplet microfluidics has also been reported. ,, For those teachers who are interested in implementing microfluidic education but lack prior experience in microfluidics, they should read some references on microfluidics and perform those microfluidic experiments which can be easily carried out without professional skills and expensive instruments. This will provide teachers a useful working experience and prompt them to implement UMCE education.…”

Section: Discussionmentioning

confidence: 99%

“…In recent years, teaching and learning of droplet microfluidics has also been reported. 39,78,79 For those teachers who are interested in implementing microfluidic education but lack prior experience in microfluidics, they should read some references on microfluidics and perform those microfluidic experiments which can be easily carried out without professional skills and expensive instruments. This will provide teachers a useful working experience and prompt them to implement UMCE education.…”

Section: ■ Conclusionmentioning

confidence: 99%

Ultra-microscale Chemistry Experiment on Microfluidic Devices: A New Trend in Chemical Education

Xu,

Cai,

Huang

2024

J. Chem. Educ.

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Microfluidic-based ultramicroscale chemistry experiments involve the manipulation and consumption of reagents on a microliter or submicroliter scale in a microfluidic device. This article presents the pedagogical functions of microfluidic systems, including green chemistry education, stimulation of students’ interest in learning about chemistry, interdisciplinary education, and learning of scientific knowledge. We also review the development of educational courses and platforms for implementing microfluidic education and examine the teaching and learning forms in microfluidic education, including demonstrations, laboratory experiments, comprehensive training, inquiry-based activities, and project or problem-based learning.

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“…Fortunately, the development of open-source hardware and software has provided researchers and students with a wealth of powerful tools for conducting experiments that are very beginner-friendly and lower the barrier to engaging in exciting research works. Over the past few years, a large number of open-source hardware and software applications with low costs have been practiced in chemical laboratories. − In the laboratory, many open-source microcontrollers (such as Arduino and Raspberry Pi) are widely used for data acquisition, ,− device control, ,− and analysis ,− because they are cheap, easy to obtain, and beginner-friendly. In 2021, the Raspberry Pi Foundation released a microcontroller called the Raspberry Pi Pico, which is powerful and can be purchased for just 4 US dollars.…”

Section: Introductionmentioning

confidence: 99%

A Raspberry Pi Pico Based Low-Cost, Research-Grade, Open-Source Thermal Conductivity Cell Detector for Chemical Laboratory Analysis

Chen

et al. 2023

J. Chem. Educ.

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The “maker” movement is gaining widespread attention, especially in the field of laboratory education. Here we have built a low-cost, “do-it-yourself”, open-source thermal conductivity cell detector (TCD) for chemical laboratory analysis, which is assembled from thermal conductivity gas sensor elements and 3D-printed flow cell parts based on a Raspberry Pi Pico microcontroller. An ADS1115 digital-to-analog converter (with 16-bit acquisition resolution) is used to acquire the electrical signal from the thermal conductivity sensor response via a Wheatstone bridge. The device is programmed to acquire data based on the open-source Thonny Micro Python IDE software via I2C communication. Temperature programming analysis (TPA) is an important technique to characterize heterogeneous catalysts; therefore, we apply the assembled TCD to characterize the reduction properties of commercial Cu/ZnO/Al2O3 catalysts. The hydrogen temperature-programmed reduction (H2-TPR) profile of the commercial Cu/ZnO/Al2O3 catalyst shows a broad peak in the range of 150–250 °C with a peak position at 213 °C, which is consistent with previous reports. The total amount of hydrogen consumed by the commercial catalyst during H2-TPR is 10.7 mmol/gcat, which can be calculated from the calibrated H2 vol % TCD signal result and the peak area of the H2-TPR profile. The results show that the fabricated TCD detector exhibits excellent performance during the testing process and is capable of meeting research-grade applications. In summary, students will learn a wide range of skills in a hands-on learning environment of a chemistry laboratory course.

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μdroPi: A Hand-Held Microfluidic Droplet Imager and Analyzer Built on Raspberry Pi

Cited by 10 publications

References 25 publications

Titrate over the Internet: An Open-Source Remote-Control Titration Unit for All Students

Titrate over the Internet: An Open-Source Remote-Control Titration Unit for All Students

Ultra-microscale Chemistry Experiment on Microfluidic Devices: A New Trend in Chemical Education

A Raspberry Pi Pico Based Low-Cost, Research-Grade, Open-Source Thermal Conductivity Cell Detector for Chemical Laboratory Analysis

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