Piezoelectric Behaviour in Biodegradable Carrageenan and Iron (III) Oxide Based Sensor.

This paper is dedicated to the research of phenomena noticed during tests of biodegradable carrageenan-based force and pressure sensors. Peculiar voltage characteristics were noticed during the impact tests. Therefore, the sensors' responses to impact were researched more thoroughly, defining time-dependent sensor output signals from calibrated energy impact.

Stretch Sensor: Development of Biodegradable Film.

This article presents research on biodegradable stretch sensors produced using biological material. This sensor uses a piezoresistive effect to indicate stretch, which can be used for force measurement. In this work, an attempt was made to develop the composition of a sensitive material and to design a sensor.

Biodegradable Carrageenan-Based Force Sensor: An Experimental Approach.

The development of low-cost biodegradable pressure or force sensors based on a carrageenan and iron (III) oxide mix is a promising way to foster the spread of green technologies in sensing applications. The proposed materials are inexpensive and abundant and are available in large quantities in nature. This paper presents the development and experimental study of carrageenan and iron (III)-oxide-based piezoresistive sensor prototypes and provides their main characteristics.

Single-walled carbon nanotube based coating modified with reduced graphene oxide for the design of amperometric biosensors.

In this study a polycarbonate filter membrane (PcFM) with 400 nm diameter holes was covered/protruded by single walled carbon nanotubes (SWCNT) and then formed PcFM/SWCNT structure was covered by thin layer of graphene oxide (GO) or reduced graphene oxide (rGO) in order to get the multilayered PcFM/SWCNT/GO and PcFM/SWCNT/rGO coatings, respectively. It was determined that the SWCNTs filaments were able to form a layer on the polycarbonate membrane having a number of carbon nanotube arranged in different orientations. A fraction of SWCNT filaments protruded through the holes of polycarbonate membrane and in such way significantly enhanced the adhesion of SWCNT-based layer and provided electrical conductivity across the PcFM.