Template-assisted electrohydrodynamic atomization of polycaprolactone for orthopedic patterning applications

Nithyanandan, Anouska; Muthusubramanian, Shanmugam; Huang, Jie; Rehman, Sarrawat; Draper, E. R. C.; Edirisinghe, Mohan

doi:10.1016/j.msec.2013.07.025

Cited by 7 publications

(5 citation statements)

References 31 publications

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“…Saywell et al (2010) demonstrated the electrospray deposition of porphyrin polymers and oligomers on Au (111) surface, exhibiting a pattern of interdigitated chains from neighboring molecules. Electrohydrodynamic jetting has been used for depositing polymers and composites on different surfaces for biomedical applications (Ahmad et al, 2010 and Nithyanandan et al, 2013). …”

Section: Depositionmentioning

confidence: 99%

Electrohydrodynamic atomization: A two-decade effort to produce and process micro-/nanoparticulate materials

Xie

Jiang

Davoodi

et al. 2015

Chemical Engineering Science

268

159

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Electrohydrodynamic atomization (EHDA), also called electrospray technique, has been studied for more than one century. However, since 1990s it has begun to be used to produce and process micro-/nanostructured materials. Owing to the simplicity and flexibility in EHDA experimental setup, it has been successfully employed to generate particulate materials with controllable compositions, structures, sizes, morphologies, and shapes. EHDA has also been used to deposit micro- and nanoparticulate materials on surfaces in a well-controlled manner. All these attributes make EHDA a fascinating tool for preparing and assembling a wide range of micro- and nanostructured materials which have been exploited for use in pharmaceutics, food, and healthcare to name a few. Our goal is to review this field, which allows scientists and engineers to learn about the EHDA technique and how it might be used to create, process, and assemble micro-/nanoparticulate materials with unique and intriguing properties. We begin with a brief introduction to the mechanism and setup of EHDA technique. We then discuss issues critical to successful application of EHDA technique, including control of composition, size, shape, morphology, structure of particulate materials and their assembly. We also illustrate a few of the many potential applications of particulate materials, especially in the area of drug delivery and regenerative medicine. Next, we review the simulation and modeling of Taylor cone-jet formation for a single and co-axial nozzle. The mathematical modeling of particle transport and deposition is presented to provide a deeper understanding of the effective parameters in the preparation, collection and pattering processes. We conclude this article with a discussion on perspectives and future possibilities in this field.

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Section: Depositionmentioning

confidence: 99%

Electrohydrodynamic atomization: A two-decade effort to produce and process micro-/nanoparticulate materials

Xie

Jiang

Davoodi

et al. 2015

Chemical Engineering Science

268

159

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“…Using the proposed p-Spray approach and the working distance of 2 mm in the case of silver-based ink, the jetting cone could be focused for printing a restricted pattern made of adjacent sprayed droplets onto a small area of interest. In particular, for the first time, in the case of printing sprayed pattern, the working distance has not to be shorten below 1 mm as it happens in the case of near-field ES , where the nozzle-to-substrate has to be controlled in order to minimize the deposition area. The pattern realized by spray droplets could be very interesting in terms of biological response; in fact, printing patterns with topography can be much more effective than simply depositing a continuous coating on the substrate.…”

Section: Resultsmentioning

confidence: 99%

On the Spraying Modality of Liquids by Pyroelectrohydrodynamics

et al. 2018

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We present for the first time an investigation on the spraying modality for the pyroelectrohydrodynamic (pyro-EHD) system. We show that the pyro-EHD spray (p-Spray) works well in the range from far field (d > 10 mm) to near field (d < 2 mm) without the need of external voltage and without the needs to change the experimental apparatus in that wide range of distances. Because the proposed method works without a counter electrode, no limitations are connected with the geometric shape of the substrate on which the spray coating is deposited. We report on several examples of the formation of disperse sprayed droplets, whose size can be varied between hundreds of micrometers and hundreds of nanometers, as well as on the production of sprayed pattern footpaths. The results reported here demonstrate the direct writing of spray patterns of nano/microdroplets with different materials in a very wide range, that is, from low-to high-viscous liquid solutions. Finally, as an example of application, we show the use of the p-Spray for the fabrication of silver-coated devices showing antimicrobial properties of the pattern produced by the p-Spray through a customizable and environmental friendly approach.

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“…It was reported that the PZT thin film presented uniform and accurate feature. Recently, templateassisted electrohydrodynamic atomisation (TAEA) technique was developed to prepare well-defined surface topography with high resolution for biomedical applications by using ground electrode configurations and templates [14]. Owing to the same nature with E-Jet, TAEA can be reasonably adapted to pattern PZT thick film structures directly by using suitable PZT slurry mentioned above without the additional photolithography and etching process [12], which can simplify the fabrication process.…”

Section: Introductionmentioning

confidence: 99%