The Applications of Green Synthesized Silver Nanoparticles: A Review

Nanoscience is a fascinating field of study that has made unique outputs and applications both cost-effective and efficient. Significant and outstanding Nano-based applications have been applied in various sectors such as agricultural, food processing, and pharmaceutical sectors. Nanoparticles with sizes ranging from 1 to 100 nm have a significant measure of the relationship between surface area and volume. Because nanomaterials have a higher bioavailability than bigger particles, they can be used as individual cells; organs, and tissues are all examples of this. Silver is considered as the most researched and used material to prepare nanoparticle. Because of their vast range of prospective uses, silver nanoparticles have sparked a lot of attention. Silver nanoparticles are less hazardous to humans, but they are extremely harmful to bacteria. In biomedical applications, silver nanoparticles have been discovered to be useful in antimicrobial, catalysis, human health, and the environment cleanup. Silver nanoparticles are attractive catalytic materials for a variety of applications due to their outstanding optical and electrical characteristics. This article reviewed the synthesis of silver nanoparticles via green approach and important applications such as antimicrobial activity, insecticidal activity, anticancer activity, nano-biosensors, human health applications, environmental applications, painting application and many others

Fabrication of Circuits on Flexible Substrates Using Conductive SU-8 for Sensing Applications

This article describes a new low-cost rapid microfabrication technology for high-density interconnects and passive devices on flexible substrates for sensing applications. Silver nanoparticles with an average size of 80 nm were used to create a conductive SU-8 mixture with a concentration of wt 25%. The patterned structures after hard baking have a sheet resistance of 11.17 Ω /□. This conductive SU-8 was used to pattern planar inductors, capacitors and interconnection lines on flexible Kapton film. The conductive SU-8 structures were used as a seed layer for a subsequent electroplating process to increase the conductivity of the devices. Examples of inductors, resistor-capacitor (RC) and inductor-capacitor (LC) circuits, interconnection lines and a near-field communication (NFC) antenna are presented as a demonstration. As an example of high-resolution miniaturization, we fabricated microinductors having line widths of 5 μ m. Mechanical bending tests were successful down to a 5 mm radius. To the best of the authors’ knowledge, this is the first report of conductive SU-8 used to fabricate such planar devices and the first on flexible substrates. This is a proof of concept that this fabrication approach can be used as an alternative for microfabrication of planar passive devices on flexible substrates.Applied Science, Faculty ofElectrical and Computer Engineering, Department ofMechanical Engineering, Department ofReviewedFacult