A novel all-3D-printed thread-based microfluidic device with embedded electrochemical detector: first application on environmental analysis of nitrite

2021 ◽  
Author(s):  
Rayan Marcel Carvalho ◽  
Valdir Souza Ferreira ◽  
Bruno Gabriel Lucca
Keyword(s):  
Microfluidic Device ◽  
Environmental Analysis ◽  
Electrochemical Detector ◽  
Novel Device ◽  
3D Printed ◽  
First Time

A microfluidic thread electroanalytical device (µTED) containing an embedded electrochemical detector is presented for the first time in this work. This novel device was entirely produced in an automated way...

scholarly journals UV Inscription and Pressure Induced Long-Period Gratings through 3D Printed Amplitude Masks

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 1977
Author(s):  
Ricardo Oliveira ◽  
Liliana M. Sousa ◽  
Ana M. Rocha ◽  
Rogério Nogueira ◽  
Lúcia Bilro
Keyword(s):  
State Of The Art ◽  
Low Cost ◽  
Resonance Wavelength ◽  
Complex Structures ◽  
Pressing Method ◽  
Long Period ◽  
Long Period Gratings ◽  
3D Printed ◽  
Mechanical Pressing ◽  
First Time

In this work, we demonstrate for the first time the capability to inscribe long-period gratings (LPGs) with UV radiation using simple and low cost amplitude masks fabricated with a consumer grade 3D printer. The spectrum obtained for a grating with 690 µm period and 38 mm length presented good quality, showing sharp resonances (i.e., 3 dB bandwidth < 3 nm), low out-of-band loss (~0.2 dB), and dip losses up to 18 dB. Furthermore, the capability to select the resonance wavelength has been demonstrated using different amplitude mask periods. The customization of the masks makes it possible to fabricate gratings with complex structures. Additionally, the simplicity in 3D printing an amplitude mask solves the problem of the lack of amplitude masks on the market and avoids the use of high resolution motorized stages, as is the case of the point-by-point technique. Finally, the 3D printed masks were also used to induce LPGs using the mechanical pressing method. Due to the better resolution of these masks compared to ones described on the state of the art, we were able to induce gratings with higher quality, such as low out-of-band loss (0.6 dB), reduced spectral ripples, and narrow bandwidths (~3 nm).

scholarly journals 3D printed microfluidic device with integrated optical sensing for particle analysis

2018 ◽  
Vol 256 ◽  
pp. 1030-1037 ◽  
Author(s):  
S.M. Hampson ◽  
W. Rowe ◽  
S.D.R. Christie ◽  
M. Platt
Keyword(s):  
Microfluidic Device ◽  
Optical Sensing ◽  
Particle Analysis ◽  
Integrated Optical ◽  
3D Printed

scholarly journals Hybrid negative enrichment of circulating tumor cells from whole blood in a 3D-printed monolithic device

Lab on a Chip ◽  
2019 ◽  
Vol 19 (20) ◽  
pp. 3427-3437 ◽  
Author(s):  
Chia-Heng Chu ◽  
Ruxiu Liu ◽  
Tevhide Ozkaya-Ahmadov ◽  
Mert Boya ◽  
Brandi E. Swain ◽  
...  
Keyword(s):  
Tumor Cells ◽  
Circulating Tumor Cells ◽  
Microfluidic Device ◽  
Whole Blood ◽  
3D Printed

A monolithic 3D-printed microfluidic device integrated with stacked layers of functionalized leukodepletion channels and microfiltration for the negative enrichment of circulating tumor cells directly from clinically relevant volumes of whole blood.

Determination of nitrite ions in environment analysis with a paper-based microfluidic device

2018 ◽  
Vol 47 (41) ◽  
pp. 14799-14807 ◽  
Author(s):  
Yu-Ci Liu ◽  
Chia-Hui Hsu ◽  
Bing-Jyun Lu ◽  
Peng-Yi Lin ◽  
Mei-Lin Ho
Keyword(s):  
Quantitative Determination ◽  
Microfluidic Device ◽  
Environmental Analysis ◽  
Environment Analysis ◽  
Silver Ink ◽  
Analytical Device

A new microfluidic paper-based analytical device, a (Ag-μPAD)-based chemiresistor composed of silver ink, has been developed for the selective, sensitive, and quantitative determination of nitrite ions in environmental analysis.

scholarly journals Fully-customized distraction assembly for maxillofacial distraction osteogenesis: a novel device and its experimental accuracy verification

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Sang-Hoon Kang ◽  
Hye-Jin Tak ◽  
Ha-Won Park ◽  
Jin-Ung Kim ◽  
Sang-Hwy Lee
Keyword(s):  
Distraction Osteogenesis ◽  
Reference Points ◽  
Assembly System ◽  
Control Group ◽  
Novel Device ◽  
Mandibular Distraction Osteogenesis ◽  
Distraction Device ◽  
Cad Cam ◽  
3D Printed ◽  
Group 1

Abstract Background A new distraction osteogenesis assembly system comprising a fully customized CAD/CAM-based fixation unit and ready-made distraction unit was developed. The aim of this study was to introduce our new distraction system and to evaluate its accuracy level in a sampled mandibular distraction osteogenesis. Methods Our system consists of a fully customized CAD/CAM-based fixation plate unit with two plates for each moving and anchoring part, and a ready-made distraction unit with attachment slots for fixation plates. The experimental distractions were performed on 3D-printed mandibles for one control and two experimental groups (N = 10 for each group). All groups had reference bars on the chin region and teeth to measure distraction accuracy. The control group had the classical ready-made distraction system, and experimental groups 1 and 2 were fitted with our new distraction assembly using a different distractor-positioning guide design. All distracted experimental mandibles were scanned by CT imaging, then superimposed on a 3D simulation to get their discrepancy levels. Results The measured 3D distances between the reference landmarks of the surgical simulations and the experimental surgeries for the three groups were significantly different (p < 0.0001) by statistical analysis. The errors were greater in the control group (with a total average of 19.18 ± 3.73 mm in 3D distance between the simulated and actual reference points) than those in the two experimental groups (with an average of 3.68 ± 1.41 mm for group 1 and 3.07 ± 1.39 mm for group 2). The customized distraction assembly with 3D-printed bone plate units in group 1 and 2, however, did not show any significant differences between simulated and actual distances (p > 0.999). Conclusion Our newly-developed distraction assembly system with CAD/CAM plate for the distraction osteogenesis of the mandible produced a greater level of accuracy than that of a conventional distraction device. The system appears to address existing shortcomings of conventional distraction devices, including inaccuracy in vector-controlled movement of the system. However, it also needs to be further developed to address the requirements and anatomical characteristics of specific regions.

scholarly journals Synthesis of Copper Nanoparticles Using Glass Microfluidic Device

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1110
Author(s):  
Yiyang Liang ◽  
Yoko Shinozaki ◽  
Hiromasa Yagyu
Keyword(s):  
Particle Size ◽  
Ascorbic Acid ◽  
Microfluidic Device ◽  
Copper Nanoparticles ◽  
Flow Rate ◽  
Control Method ◽  
Size Control ◽  
Metallic Materials ◽  
First Time ◽  
Citrate Reduction

In a synthesis of gold nanoparticles on a microfluidic device by citrate reduction, a particle size control by changing a flow rate was reported. To apply this simple control method to the synthesis of other metallic materials, we propose the synthesis of copper nanoparticles (CuNPs) in ethylene glycol by the microfluidic device using ascorbic acid as both antioxidant and reducing agent. The experimental results found for the first time that the effect of the flow rate of agents on particle size of the synthesized CuNPs in the device.

Sign in / Sign up

Export Citation Format

Share Document