Reactive Inkjet Printing of Biocompatible Enzyme Powered Silk Micro‐Rockets

Gregory, David A.; Zhang, Yu; Smith, Patrick J.; Zhao, Xiubo; Ebbens, Stephen J.

doi:10.1002/smll.201600921

Cited by 65 publications

(62 citation statements)

References 80 publications

(147 reference statements)

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“…Reactive inkjet printing, which also uses two nozzles, combining the processes of material deposition and chemical reaction, has also drawn attention as a cost‐effective and highly controllable method to fabricate patterns recently . Reactive inkjet printing can be seen as a synthetic tool . As shown in Figure i,j, gold nanoparticles (AuNPs) can be synthesized in two printing steps: the reducing reactant (1 mL oleylamine in 10 mL 1,2‐dichlorobenzene) was first printed, and then the metal precursor (0.12 mmol Au(III) chloride trihydrate in 10 mL dimethyl sulfoxide) was deposited at the same position (or vice versa).…”

Section: Printing Technology: Materials and Recent Developmentmentioning

confidence: 99%

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Huang

Zhu

2019

Adv Materials Technologies

346

347

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PE has been explored for the manufacturing of flexible and stretchable electronic devices by printing functional inks containing soluble or dispersed materials, [14][15][16] which has enabled a wide variety of applications, such as transparent conductive films (TCFs), flexible energy harvesting and storage, thin film transistors (TFTs), electroluminescent devices, and wearable sensors. [17][18][19][20][21][22][23][24] The global PE market should reach $26.6 billion by 2022 from $14.0 billion in 2017 at a compound annual growth rate of 13.6%. [25] PE devices are manufactured by a variety of printing technologies. Typical printing technologies can be divided into two broad categories: noncontact patterning (or nozzle-based patterning) and contact-based patterning. The noncontact techniques include inkjet printing, electrohydrodynamic (EHD) printing, aerosol jet printing, and slot die coating, while screen printing, gravure printing, and flexographic printing are examples of the contact techniques. Each of these techniques has its own advantages and disadvantages, but they all rely on the principle of transferring inks to a substrate. Understanding the characteristics and recent advances of each printing technique is important to further the progress in PE. Moreover, to promote the lab-scale printing technologies to large-scale production process, roll-toroll (R2R) printing, which is one of the manufacturing methods to obtain large-area films with low cost and excellent durability, has drawn much attention from both industry and the research community.Nearly all of devices based on PE require conductive structures, interconnects, and contacts; therefore, highly conductive patterns, usually with high transparency and/or high resolution, fabricated by means of printing conductive materials are one of the most critical components in PE devices. Various printable conductive nanomaterials, such as metal nanomaterials (e.g., metal nanoparticles and metal nanowires) and carbon nanomaterials (e.g., graphene and carbon nanotubes (CNTs)), have been explored and used as major materials for PE. Applying printing technology to deposition of the conductive nanomaterials requires formulation of suitable inks. After depositing inks on different substrates, post-printing treatment, Printed electronics is attracting a great deal of attention in both research and commercialization as it enables fabrication of large-scale, low-cost electronic devices on a variety of substrates. Printed electronics plays a critical role infacilitating widespread flexible electronics and more recently stretchable electronics. Conductive nanomaterials, such as metal nanoparticles and nanowires, carbon nanotubes, and graphene, are promising building blocks for printed electronics. Nanomaterial-based printing technologies, formulation of printable inks, post-printing treatment, and integration of functional devices have progressed substantially in the recent years. This review summarizes basic principles and recent development of common printing technologie...

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Section: Printing Technology: Materials and Recent Developmentmentioning

confidence: 99%

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Huang

Zhu

2019

Adv Materials Technologies

346

347

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“…Artificial self-propelled micro-stirrers (SPMSs) employ a variety of propulsion mechanisms to produce motion, which can be categorized as either chemical propulsion 1,2,3,4,5,6 or physical external propulsion. A common chemical propulsion mechanism is to use catalytic or enzymatic activity to either generate motion producing gradients or generate bubbles that impart momentum to the object when they detach.…”

Section: Introductionmentioning

confidence: 99%

Reactive Inkjet Printing and Propulsion Analysis of Silk-based Self-propelled Micro-stirrers

Gregory

Kumar

Jimenez-Franco

et al. 2019

JoVE

Self Cite

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In this study, a protocol for using reactive inkjet printing to fabricate enzymatically propelled silk swimmers with well-defined shapes is reported. The resulting devices are an example of self-propelled objects capable of generating motion without external actuation and have potential applications in medicine and environmental sciences for a variety of purposes ranging from micro-stirring, targeted therapeutic delivery, to water remediation (e.g., cleaning oil spills). This method employs reactive inkjet printing to generate well-defined small-scale solid silk structures by converting water soluble regenerated silk fibroin (silk I) to insoluble silk fibroin (silk II). These structures are also selectively doped in specific regions with the enzyme catalase in order to produce motion via bubble generation and detachment. The number of layers printed determines the three-dimensional (3D) structure of the device, and so here the effect of this parameter on the propulsive trajectories is reported. The results demonstrate the ability to tune the motion by varying the dimensions of the printed structures.

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“…Then, the mixing and the chemical reaction take place on the substrate's surface, forming the desired chemical structure. Silk micro‐rockets, as well as silk fibroin scaffolds, have successfully been created using the full RIJ approach . In both the cases, a silk ink is reacted with a methanol ink in order to transform the soluble random coil silk structure into the insoluble beta‐sheet structure.…”

Section: Introductionmentioning

confidence: 99%

“…As polyurethane chemistry offers a wide range of applications, this study focused on the RIJ of PUF formulations to obtain porous structures rather than continuous PU coatings. Polyethylene glycols (PEG) were identified to be proven polyols suitable for inkjet printing . Furthermore, PEG‐based materials are considered interesting materials for drug deliveryand combined with polyurethane chemistry, they have successfully been used as scaffolds in the field of tissue engineering and as carriers of living cells .…”

Section: Introductionmentioning

confidence: 99%

Reactive inkjet printing of polyethylene glycol and isocyanate based inks to create porous polyurethane structures

Schuster

Hirth

Weber

2018

J of Applied Polymer Sci

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Reactive inkjet printing offers a direct way to create polymeric structures in situ on a substrate. Therefore, two component polyurethane formulations can be utilized to be used in multicomponent inkjet printing. In this contribution, the use of polyethylene glycol (M = 200 g mol −1 ), glycerol ethoxylate (M = 1,000 g mol −1 ), and water (blowing agent) in combination with aliphatic 1,6-hexamethylene diisocyanate or aromatic methylene diphenyl diisocyanate for reactive inkjet printing is evaluated. The inks are jettable on a Dimatix DMP-3000 inkjet printer using a 10 pL piezo driven drop-on-demand printhead showing stable droplet formation. Solid films on glass are formed using a drop-by-drop printing strategy. Layer-by-Layer strategy gives best results on polycarbonate substrates forming porous polyurethane structures.

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Reactive Inkjet Printing of Biocompatible Enzyme Powered Silk Micro‐Rockets

Cited by 65 publications

References 80 publications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Reactive Inkjet Printing and Propulsion Analysis of Silk-based Self-propelled Micro-stirrers

Reactive inkjet printing of polyethylene glycol and isocyanate based inks to create porous polyurethane structures

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