Integration of analytical measurements and wireless communications—Current issues and future strategies

Properties and Customization of Sensor Materials for Biomedical Applications

“…Diagnostics, personal health, and related costs will also benefit from the introduction of sensors technology (5)(6)(7). In addition, with the introduction of Registration, Evaluation, Authorization, and Restriction of Chemical Substances (REACH) regulation, unraveling the cause-effect relationships in epidemiology studies will be of outmost importance to help establish reliable environmental policies aimed at protecting the health of individuals and communities (8)(9)(10).…”

“…Interestingly, it was reported that this composite can be used as an Figure 1 The operational principles of a device consisting of a sensor and an Al/air battery separated by a wax barrier. The paper reservoir of the sensor is preloaded with dried glucose oxidase (GO x ) and Fe(CN) 6 …”

“…For example, ssDNA segments physically adsorbed on graphene quantum dots (GQDs) were reported for the detection of thrombin (258). The specific binding of the ssDNA with the target analyte generated an electron transfer between the electroactive species [Fe(CN) 6 ] 3À/4À and the GQDs modified electrode, which would have otherwise been blocked by the adsorbed ssDNA. Nitrite sensors were also reported, based on immobilization of hemoglobin on graphene sheets functionalized with tetrasodium 1,3,6,8-pyrenetetrasulfonic acid (259), which binds to the positive domains of myoglobin (260).…”

“…The barcode contains ionogels that are doped with several pH chromogenic dyes (having different pK a ) such that the device is capable of monitoring the pH in the range 4.5-7.5. The authors reported that the pNIPAAm/[P 6,6,6,14 ][dca] ionogel provides a convenient matrix to immobilize the pH responsive dyes, as it reduces leaching of the dyes through electrostatic interactions within the IL. The device was integrated into a commercially available plaster, and was successfully used for measuring the pH of an athlete during a 50-min training session.…”

Development and Deployment of a Microfluidic Platform for Water Quality Monitoring

“…However, despite rapid and on-going developments in the area of microfluidic/lab-on-a-chip technology for chemical analyses over the last 20 years or so, and the significant requirements and opportunities which exist for autonomous environmental monitoring systems [10,11], relatively few field deployable microfluidic devices based on reagent chemistry have come to fruition.…”