Determination of uranium in water based on enzyme inhibition using a wireless magnetoelastic sensor

A cost-effective smartphone-based device for rapid C-reaction protein (CRP) detection using magnetoelastic immunosensor

“…Because of the specific binding of the biomolecule, the mass of the extra load on the sensor increases, causing the resonance frequency of the sensor to decrease. The shift of resonance frequency Δ f i can be expressed as: 43,44 where M is the mass of the sensor and Δ m is the mass of the extra load. Due to the antigen–antibody binding of CRP on the ME immunosensor surface in this work, the extra load is the CRP sample.…”

Magnetoelastic Resonance Sensors: Principles, Applications, and Perspectives

“…In particular, Zhao et al developed magnetoelastic-based sensors for the detection of uranium by two different methodologies based on the inhibition effect caused by the Uuranium in (i) the catalytic effect of Hg(II) on the precipitation reaction of potassium ferrocyanide with potassium ferricyanide 74 and (ii) the catalytic hydrolyzation caused by the α-amylase on a starch film deposited on the sensor surface. 75 In both cases, the increase in the uranium concentration reduces the catalytic effect leading to (i) a reduction on the sediment produced or (ii) a reduction in the starch film mass loss. The detection limit was increased from 0.46 μg/L, when employed the precipitation method, to 3.6 μg/L, when employed the αamylase catalytic hydrolyzation.…”

“…Magnetoelastic resonators have been further employed for detection purposes in liquid media, especially to quantify the water content on heavy metals (HMs). In particular, Zhao et al developed magnetoelastic-based sensors for the detection of uranium by two different methodologies based on the inhibition effect caused by the Uuranium in (i) the catalytic effect of Hg­(II) on the precipitation reaction of potassium ferrocyanide with potassium ferricyanide and (ii) the catalytic hydrolyzation caused by the α-amylase on a starch film deposited on the sensor surface . In both cases, the increase in the uranium concentration reduces the catalytic effect leading to (i) a reduction on the sediment produced or (ii) a reduction in the starch film mass loss.…”

Surface Functionalization, Bioanalysis, and Applications: Progress of New Magnetoelastic Biosensors

“…[6][7][8][9] Figure 1 shows an overview of the main approaches to using transducers in ME biosensors and application prospects in related fields. For instance, by using various kinds of surface functionalization and bioanalysis, ME biosensors are used to detect classical swine fever virus in wild animals, [10,11] monitor the release of pesticides, [12][13][14] and metal ions [15,16] into the environment, [17][18][19] and detect various diseases analyses (such as, diabetes, [20][21][22] genetic diseases [23][24][25] and cancers [26,27] ). Hence, the ME biosensor has a promising prospect in clinical use and environmental protection.…”