Introducing all-inkjet-printed microneedles for in-vivo biosensing.

Area of Science:

• Materials Science
• Nanotechnology
• Biosensing

Background:

• Microneedles are crucial for pain-free drug delivery and wearable biosensors.
• Current microneedle fabrication is complex, expensive, and not suitable for mass production, limiting applications in fields like precision agriculture.
• There is a need for scalable and cost-effective microneedle fabrication methods.

Purpose of the Study:

• To introduce a novel, simple, and scalable method for fabricating conductive microneedles.
• To demonstrate the use of inkjet printing with silver nanoparticle inks for microneedle production.
• To showcase a potential application of these microneedles in plant electrochemical monitoring.

Main Methods:

• Utilized an all-inkjet-printing approach for microneedle fabrication.
• Employed silver nanoparticle-based inks for creating conductive microneedle structures.
• Developed a proof-of-concept application for monitoring plant electrochemical properties.

Main Results:

• Successfully fabricated scalable, conductive microneedles using inkjet printing.
• Demonstrated the versatility of the method by using silver nanoparticle inks.
• Showcased the feasibility of using these microneedles for plant electrochemical monitoring.

Conclusions:

• The developed inkjet-printing method offers a simple, scalable, and cost-effective solution for conductive microneedle fabrication.
• This technology has broad potential applications, including biosensing and precision agriculture.
• The method is extensible to other metallic nanoparticle inks, enhancing its versatility.