Guideline for paste extrusion 3D printing of slump-free ferrite inductor cores

Author(s):  
Lanbing Liu ◽  
Khai D.T. Ngo ◽  
Guo-Quan Lu
Keyword(s):  
Author(s):  
Samuel E. Hall ◽  
Jaime E. Regis ◽  
Anabel Renteria ◽  
Luis A. Chavez ◽  
Luis Delfin ◽  
...  

2020 ◽  
Vol 64 (5) ◽  
pp. 50401-1-50401-10
Author(s):  
Anan Tanwilaisiri ◽  
Phichit Kajondecha

Abstract A fused deposition modeling (FDM) printing machine and a paste extrusion system were integrated, and supercapacitor samples were fabricated using a combination of two three-dimensional (3D) printing techniques. The FDM provided a simple method for creating a frame of electric double layer capacitor (EDLC) samples. The paste extrusion system offered the possibility of depositing different materials to complete the functions of the EDLC samples. A combination of these two 3D printing methods offered one continuous manufacturing process with a high accuracy of manufacturing. Different materials were used to build current collectors and electrodes. Silver and carbon conductive paints were used as current collector materials. Different electrode materials based on activated carbon (AC), carbon conductive paint, and their combination were prepared as three different slurries and deposited to form the electrodes of EDLC samples. The results showed that silver conductive paint was a suitable material for constructing current collectors, and carbon conductive paint mixed with AC was highly effective for use as an electrode material for supercapacitors.


2018 ◽  
Vol 102 (6) ◽  
pp. 3685-3694 ◽  
Author(s):  
Hoejin Kim ◽  
Anabel Renteria‐Marquez ◽  
Md Didarul Islam ◽  
Luis A. Chavez ◽  
Carlos A. Garcia Rosales ◽  
...  

2017 ◽  
Vol 3 (2) ◽  
pp. 389-392
Author(s):  
Wiebke Kempin ◽  
Anna Baden ◽  
Werner Weitschies ◽  
Anne Seidlitz

AbstractFused deposition modeling as an additive manufacturing technique has gained great popularity for the fabrication of medical devices as well as pharmaceutical dosage forms over the last years. Particularly the variety of geometries that can be printed determines the attractiveness of this technique enabling a shape adaption of e.g. implants. In the presented work the soft hydrogel material glycerol gelatin was investigated towards its applicability in 3D-printing as an alternative to the commonly applied and mostly rigid polyesters. Model implants loaded with the model drug quinine and with the shape of a hollow cylinder were printed via an extrusion based technique utilizing the piston feed in a hydrogel filled heatable syringe. Glycerol gelatin hydrogels need to be crosslinked to avoid gel-sol-transition at body temperature. For this purpose three different crosslinking methods (insertion, dipping, spraying) with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) and N-hydroxysuccinimide (NHS) were evaluated regarding their crosslinking efficiency and drug losses during the crosslinking process. Dipping of the implant into an aqueous solution with at least 50 mM EDC and 10 mM NHS was found to be the most efficient crosslinking technique in conjunction with a smaller drug loss during processing compared to inserting. However, the use of hydrogels also causes problems as an intense and highly variable swelling of the printed structures during crosslinking (120.7 % ± 11.9 % for 10 times dipping in 50mM EDC/10 mM NHS) and a great dependency of the volume on storage conditions complicate the preparation of tailor-made implants. The release of the model drug quinine from printed and crosslinked implants was fast and nearly completed within 6 hours.


Author(s):  
Anabel Renteria ◽  
Luisa F. Garcia ◽  
Victor H. Balcorta ◽  
Dayna Ortiz ◽  
Luis C. Delfin ◽  
...  

Nature ◽  
2013 ◽  
Vol 494 (7436) ◽  
pp. 174-174 ◽  
Author(s):  
Michael Pawlyn
Keyword(s):  

Nature ◽  
2020 ◽  
Vol 588 (7839) ◽  
pp. 594-595
Author(s):  
Cameron Darkes-Burkey ◽  
Robert F. Shepherd
Keyword(s):  

Author(s):  
Thomas Birtchnell ◽  
William Hoyle
Keyword(s):  

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