3D Printed Microfluidic Mixers—A Comparative Study on Mixing Unit Performances

Small ◽  
2018 ◽  
pp. 1804326 ◽  
Author(s):  
Anton Enders ◽  
Ina G. Siller ◽  
Katharina Urmann ◽  
Michael R. Hoffmann ◽  
Janina Bahnemann
Keyword(s):  
Comparative Study ◽  
3D Printed ◽  
Microfluidic Mixers

Fabrication of Tunable Silk Materials Through Microfluidic Mixers

2016 ◽  
Author(s):  
Joseph R. Nalbach ◽  
Dave Jao ◽  
Douglas G. Petro ◽  
Kyle M. Raudenbush ◽  
Shibbir Ahmad ◽  
...  
Keyword(s):  
Soft Lithography ◽  
Mixing Processes ◽  
Microfluidic Mixing ◽  
Microfluidic Mixer ◽  
Continuous Mixing ◽  
Mixing Performance ◽  
3D Printed ◽  
Distribution Uniformity ◽  
Mixing Patterns ◽  
Microfluidic Mixers

A common method to precisely control the material properties is to evenly distribute functional nanomaterials within the substrate. For example, it is possible to mix a silk solution and nanomaterials together to form one tuned silk sample. However, the nanomaterials are likely to aggregate in the traditional manual mixing processes. Here we report a pilot study of utilizing specific microfluidic mixing designs to achieve a uniform nanomaterial distribution with minimal aggregation. Mixing patterns are created based on classic designs and then validated by experimental results. The devices are fabricated on polydimethylsiloxane (PDMS) using 3D printed molds and soft lithography for rapid replication. The initial mixing performance is validated through the mixing of two solutions with colored dyes. The microfluidic mixer designs are further analyzed by creating silk-based film samples. The cured film is inspected with scanning electron microscopy (SEM) to reveal the distribution uniformity of the dye particles within the silk material matrix. Our preliminary results show that the microfluidic mixing produces uniform distribution of dye particles. Because the microfluidic device can be used as a continuous mixing tool, we believe it will provide a powerful platform for better preparation of silk materials. By using different types of nanomaterials such as graphite (demonstrated in this study), graphene, carbon nanotubes, and magnetic nanoparticles, the resulting silk samples can be fine-tuned with desired electrical, mechanical, and magnetic properties.

A comparative study on 3D printed silicone-epoxy/acrylate hybrid polymers via pure photopolymerization and dual-curing mechanisms

2018 ◽  
Vol 54 (6) ◽  
pp. 5101-5111 ◽  
Author(s):  
Tingting Zhao ◽  
Ran Yu ◽  
Xinpan Li ◽  
Ying Zhang ◽  
Xin Yang ◽  
...  
Keyword(s):  
Comparative Study ◽  
Epoxy Acrylate ◽  
Hybrid Polymers ◽  
3D Printed ◽  
Dual Curing

On effect of chemical-assisted mechanical blending of barium titanate and graphene in PVDF for 3D printing applications

2020 ◽  
pp. 089270572094537
Author(s):  
Ravinder Sharma ◽  
Rupinder Singh ◽  
Ajay Batish
Keyword(s):  
Mechanical Properties ◽  
Barium Titanate ◽  
3D Printing ◽  
Comparative Study ◽  
Process Parameters ◽  
Processing Temperature ◽  
Melt Mixing ◽  
Twin Screw ◽  
3D Printed ◽  
The Comparative Study

The polyvinylidene difluoride + barium titanate (BaTiO3) +graphene composite (PBGC) is one of the widely explored thermoplastic matrix due to its 4D capabilities. The number of studies has been reported on the process parameters of twin-screw extruder (TSE) setup (as mechanical blending technique) for the development of PBGC in 3D printing applications. But, hitherto, little has been reported on chemical-assisted mechanical blending (CAMB) as solution mixing and melt mixing technique combination for preparation of PBGC. In this work, for preparation of PBGC feedstock filaments, CAMB has been used. Also, the effect of process parameters of TSE on the mechanical, dimensional, morphological, and thermal properties of prepared filament of PBGC have been explored followed by 3D printing. Further, a comparative study has been reported for the properties of prepared filaments with mechanically blended composites. Similarly, the mechanical properties of 3D printed parts of chemically and mechanically blended composites have been compared. The results of tensile testing for CAMB of PBGC show that the filament prepared with 15% BaTiO3 is having maximum peak strength 43.00 MPa and break strength 38.73 MPa. The optical microphotographs of the extruded filaments revealed that the samples prepared at 180°C extruder temperature and 60 r/min screw speed have minimum porosity, as compared to filaments prepared at high extruder temperature. Further, the results of the comparative study revealed that the filaments of CAMB composites show better mechanical properties as compared to the filaments of mechanically mixed composites. However, the dimensional properties were almost similar in both cases. It was also found that the CAMB composites have better properties at low processing temperature, whereas mechanically blended composites show better results at a higher temperature. While comparing 3D printed parts, tensile strength of specimens fabricated from CAMB was more than the mechanically blended PBGC.

Recycled poly(lactic acid)–based 3D printed sustainable biocomposites: a comparative study with injection molding

2020 ◽  
Vol 7-8 ◽  
pp. 100027 ◽  
Author(s):  
E.O. Cisneros-López ◽  
A.K. Pal ◽  
A.U. Rodriguez ◽  
F. Wu ◽  
M. Misra ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Injection Molding ◽  
Comparative Study ◽  
Poly Lactic Acid ◽  
3D Printed

A Comparative Study of Granular Agglomeration between 3D Printed Hydroxyapatite and Commercial Bone Graft Granules

2019 ◽  
Vol 798 ◽  
pp. 83-87
Author(s):  
Faungchat Thammarakcharoen ◽  
Ariya Yampakdee ◽  
Bovornwut Buranawat ◽  
Jintamai Suwanprateeb
Keyword(s):  
Phase Composition ◽  
Comparative Study ◽  
Bone Graft ◽  
Water Absorption ◽  
Tricalcium Phosphate ◽  
Water Film ◽  
Xrd Analysis ◽  
High Porosity ◽  
Capillary Action ◽  
3D Printed

Granule characteristics and the agglomeration ability of 3D printed hydroxyapatite granules (3DP HA) when contacting water were compared to those of commercial bone graft granules based on hydroxyapatite/β-tricalcium phosphate/collagen mixture (Sunmax). Microstructure, phase composition, water absorption and granular agglomeration of the granules were characterized. SEM showed that the granule sizes of Sunmax were in the range of 0.8-1.5 mm whereas that of 3DP HA was relatively more uniform at about 1 mm. 3DP HA granules comprised the weaving of numerous minute crystals containing large pores and having high porosity while Sunmax granules were crushed granules and having low porosity. XRD analysis confirmed that Sunmax granules were biphasic hydroxyapatite and β-tricalcium phosphate while 3DP HA granules were monophasic hydroxyapatite. Sunmax granules exhibited greater agglomeration volume than that of 3DP HA granules. However, the water absorption of 3DP HA granules was greater than that of Sunmax granules. The greater agglomeration ability of Sunmax granules was likely due to the collagen constituent of the granules which could act as adhesive to bind granules together in addition to water capillary action. In contrast, 3DP HA granules formed the agglomeration by the water film due to the capillary action only so the efficiency was lower although the water absorption was greater.

On the Crosstalks between a Pair of Transmission Lines in the Presence of a 3D Printed Electrifi Trace

2021 ◽  
Vol 35 (11) ◽  
pp. 1286-1287
Author(s):  
Dipankar Mitra ◽  
Kazi Kabir ◽  
Jerika Clevelenad ◽  
Ryan Striker ◽  
Benjamin Braaten ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Comparative Study ◽  
Transmission Lines ◽  
Electromagnetic Compatibility ◽  
Physical Contact ◽  
Wearable Electronics ◽  
Conductive Filament ◽  
3D Printed ◽  
Microstrip Transmission Lines

The technology of additive manufacturing results in 3D printing of conductive traces in radio frequency circuits. This creates a plethora of possibilities in realizing flexible and wearable electronics. While the prototypes of microstrip transmission lines and antennas have been recently reported, there is now a need of Electromagnetic Compatibility based study of such 3D printed conductive traces. This paper presents a comparative study on the near end and far end unintentional crosstalk components between a pair of microstrip transmission lines made of Copper in the presence of a 3D printed conductive trace made of a commercially available conductive filament, Electrifi. Any physical contact with the 3D printed trace has been purposefully averted to discard the high contact resistance between the trace and such contacts.

Comparative Study of Functional Grasp and Efficiency Between a 3D-Printed and Commercial Myoelectric Transradial Prosthesis Using Able-Bodied Subjects

2017 ◽  
Vol 29 (3) ◽  
pp. 112-118 ◽  
Author(s):  
Tuan Duong ◽  
Brandon Wagner ◽  
Tobin Abraham ◽  
Michael Davidson ◽  
Gurinder Bains ◽  
...  
Keyword(s):  
Comparative Study ◽  
3D Printed
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