Field-assisted additive manufacturing of polymeric composites

Safaee, Shahriar; Schock, Matthew; Joyee, Erina Baynojir; Pan, Yayue; Chen, Roland

doi:10.1016/j.addma.2022.102642

Cited by 15 publications

(8 citation statements)

References 278 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…20 These composite printing strategies provide important references for the efficient fabrication of 3D aligned scaffolds; however, the scaffold morphology cannot be well defined due to the complex electric field modulation for electrospun nanofibers. 21 Here, we report a trench-guided electrospinning (ES) strategy that enables the direct fabrication of 3D aligned nanofiber scaffolds with alternative ES and a direct ink writing (DIW) process. The PDMS trenches were printed on a glass substrate to guide ES nanofibers.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Tang et al fabricated a micro/nanohierarchical substrate based on soft lithography and electrospinning to assess the synergetic effect of the off-ground culture environment on the maturation of CMs . These composite printing strategies provide important references for the efficient fabrication of 3D aligned scaffolds; however, the scaffold morphology cannot be well defined due to the complex electric field modulation for electrospun nanofibers …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

3D Aligned Nanofiber Scaffold Fabrication with Trench-Guided Electrospinning for Cardiac Tissue Engineering

Qiu,

Wu,

Xue

et al. 2024

Langmuir

View full text Add to dashboard Cite

Constructing three-dimensional (3D) aligned nanofiber scaffolds is significant for the development of cardiac tissue engineering, which is promising in the field of drug discovery and disease mechanism study. However, the current nanofiber scaffold preparation strategy, which mainly includes manual assembly and hybrid 3D printing, faces the challenge of integrated fabrication of morphology-controllable nanofibers due to its cross-scale structural feature. In this research, a trench-guided electrospinning (ES) strategy was proposed to directly fabricate 3D aligned nanofiber scaffolds with alternative ES and a direct ink writing (DIW) process. The electric field effect of DIW poly(dimethylsiloxane) (PDMS) side walls on guiding whipping ES nanofibers was investigated to construct trench design rules. It was found that the width/height ratio of trenches greatly affected the nanofiber alignment, and the trench width/height ratio of 1.5 provided the nanofiber alignment degree over 60%. As a proof of principle, 3D nanofiber scaffolds with controllable porosity (60−80%) and alignment (30−60%) were fabricated. The effect of the scaffolds was verified by culturing human-induced pluripotent stem cellderived cardiomyocytes (hiPSC-CMs), which resulted in the uniform 3D distribution of aligned hiPSC-CMs with ∼1000 μm thickness. Therefore, this printing strategy shows great potential for the efficient engineered tissue construction.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D Aligned Nanofiber Scaffold Fabrication with Trench-Guided Electrospinning for Cardiac Tissue Engineering

Qiu,

Wu,

Xue

et al. 2024

Langmuir

View full text Add to dashboard Cite

show abstract

“…Unfortunately, these fabrication methods have their own limitations, which make them complex and less versatile for the manufacturing of piezoelectric nanocomposites with aligned nanowires. Recently, direct-ink writing has been considered as a facile and rapid method for aligning piezoelectric nanowires in polymers. − A shear-induced alignment during direct-ink writing is relatively simple to achieve without the external electric field, and various piezoelectric nanocomposites have been fabricated using appropriate control of processing conditions. , Moreover, the direct-ink writing technique is suitable for the manufacture of piezoelectric composite films due to its high efficiency and desirable structure design. , For instance, Gao et al aligned (Na,K)NbO 3 (KNN) nanowires in a polydimethylsiloxane (PDMS) matrix by a direct-ink writing method. The output voltage was nearly 400% higher than a spin-coated film owing to the alignment of the nanowires .…”

Section: Introductionmentioning

confidence: 99%

3D-Printed Flexible PVDF-TrFE Composites with Aligned BCZT Nanowires and Interdigital Electrodes for Piezoelectric Nanogenerator Applications

Yan

Liu

et al. 2023

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Piezoelectric nanogenerators based on piezoelectric nanocomposites have attracted much interest in recent decades owing to their excellent piezoelectric properties and application in self-powered systems and wearable sensors. As a promising piezoelectric ceramic filler in composite-based generators, one-dimensional (1D) piezoelectric nanowires were filled into a polymer matrix to enhance its dielectric and piezoelectric properties. In this paper, flexible PVDF-TrFE composite films containing highly aligned Ba0.85Ca0.15Ti0.9Zr0.1O3 (BCZT) nanowires (NWs) have been manufactured via a direct-ink writing method. The effect of BCZT NW content on the dielectric, ferroelectric, and piezoelectric properties was investigated using multiphysics modeling and detailed experiments. An optimum composite composition was discovered, and the piezoelectric composite film with 15 wt % BCZT NWs possessed the highest energy harvesting figure of merit of 5.3 × 10–12 m2/N. Interdigital electrodes were combined with the composite to fabricate a patterned piezoelectric nanogenerator, where the piezoelectric nanogenerator can produce an open-circuit output voltage of 17 V, and the maximum output power density could reach 5.6 μW/cm2. This work provides opportunities for the optimization and fabrication of piezoelectric materials for energy-harvesting and sensing applications.

show abstract

“…[ 12–16 ] For most extrusion‐based nanocomposite processing methodologies, such as 3D printing, the CNTs are naturally aligned in the direction of extrusion due to shear stresses from the nozzle wall. [ 17,18 ] However, due to the shear stress gradually decreasing from the nozzle wall to the center, the degree of alignment is highest at the edges, and lowest at the center. [ 18,19 ] Also, shear‐induced alignment is limited to the direction of extrusion.…”

Section: Introductionmentioning

confidence: 99%

Competing Effects of Radio Frequency Fields on Carbon Nanotube/Resin Systems: Alignment versus Heating

Sarmah

Mee

Arole

et al. 2023

Macro Materials & Eng

View full text Add to dashboard Cite

This work shows that radio‐frequency (RF) fields can simultaneously align carbon nanotubes (CNTs) dispersed in a resin and induce Joule heating to cure the resin. The timescales of alignment and curing using RF heating are numerically computed and compared at different field strengths in order to determine a temperature where alignment happens before the matrix crosslinks. Composites are experimentally fabricated at the desired target temperature and are optically analyzed and quantified; the CNT network is successfully aligned in the direction of the applied electric field. This methodology can be used to create composites where the local alignment can be varied across the sample. Composites fabricated using RF fields have higher electrical conductivity in the direction of the aligned CNTs than an oven‐cured, randomly aligned sample. Also, RF‐cured nanocomposites exhibit higher tensile strength and modulus in the direction of alignment compared to an oven‐cured sample. Finally, it is further demonstrated how this methodology can be coupled with a direct ink writing additive manufacturing process to induce alignment in any desired direction, even orthogonal to the shear forces in the extrusion direction.

show abstract

Field-assisted additive manufacturing of polymeric composites

Cited by 15 publications

References 278 publications

3D Aligned Nanofiber Scaffold Fabrication with Trench-Guided Electrospinning for Cardiac Tissue Engineering

3D Aligned Nanofiber Scaffold Fabrication with Trench-Guided Electrospinning for Cardiac Tissue Engineering

3D-Printed Flexible PVDF-TrFE Composites with Aligned BCZT Nanowires and Interdigital Electrodes for Piezoelectric Nanogenerator Applications

Competing Effects of Radio Frequency Fields on Carbon Nanotube/Resin Systems: Alignment versus Heating

Contact Info

Product

Resources

About