Fabricating process-electrochemical property correlation of laser-scribed graphene and smartphone-based electrochemical platform for portable and sensitive biosensing

The role of nanoparticles in non‐invasive electrochemical immunosensor technology and recent developments

“…A sandwich immune complex was formed at the electrode interface in the presence of tumor necrosis factor-α (TNF-α), and it was electrochemically detected that the anti-human TNF-α biotinylated detection antibody could catalyze the oxidation of 3,3',5,5'-tetramethybenzidine (TMB) by H 2 O 2 after binding to streptavidin-horseradish peroxidase. That is, by developing a portable electrochemical sensing platform with smartphone reading by integrating it with the LSG electrode, it has been shown that this platform can be adapted to various sensing methods [53]. Fabiani et al also presented a smartphone-enabled electrochemical immunosensor by combining vertical and lateral flow for the detection of SARS-CoV-2 in saliva.…”

Laser-Scribed Graphene for Human Health Monitoring: From Biophysical Sensing to Biochemical Sensing

“…Although most previous studies on LSG have employed discrete parameters, the effectiveness of a laser-based device often stems from the synergistic interaction of multiple laser parameters. Our previous work explored the correlation between the fabricating process and electrochemical properties of LSG [ 15 ]. The experimental results demonstrated that the structure and composition of LSG were associated with vital fabrication parameters ( Figure 1 A,B).…”

“…Secondly, by ingeniously designing recognition elements and sensing strategies, these sensors can quantify a diverse range of targets, including ions, small molecules, proteins, nucleic acids, cells, and viruses [ 64 ]. For example, electrochemical immunosensing is usually designed based on enzyme-catalyzed reactions, as illustrated in Figure 8 C [ 15 ]. In 2019, the global pandemic of SARS-CoV-2 posed a significant challenge to public health, which drove the development of inexpensive and rapid diagnostic devices.…”

Unlocking the potential of perovskite-based nanomaterials for revolutionary smartphone-based sensor applications

“…5,13–16 The success of these sophisticated sensors is fundamentally dependent on the innovative materials from which they are constructed. 17–19 A variety of nanomaterials have demonstrated potential in this arena: graphene, with its extraordinary electrical conductivity and surface area; 20–22 gold-based nanomaterials, 23–26 revered for their distinctive plasmonic properties; and polymer dots, 27,28 quantum dots, 29,30 which may integrate seamlessly with existing semiconductor frameworks. Yet, within this innovative spectrum, Perovskite-based nanomaterials offer unmatched benefits for the evolution of smartphone-integrated sensors.…”