Quantification of Staphylococcus epidermidis using a wireless, mass-responsive sensor

Huang, Sijing; Wang, Yijie; Ge, Shutian; Cai, Qingyun; Grimes, Craig A.

doi:10.1016/j.snb.2010.06.037

Cited by 8 publications

(9 citation statements)

References 23 publications

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“…Polyurethanes are widely used in the medical field due to their highly biocompatible and abrasion resistant properties [26]. Specifically, Bayhydrol 110 (Covestro AG: Leverkusen, Germany), an aliphatic polyester urethane resin, is a common polymer coating used with ME materials to enable bacterial cell adhesion [27,28]. Silane-based coatings can also be used to prevent corrosion of ME materials and provide biofunctionalized surfaces [19].…”

Section: Me Substrate Materialsmentioning

confidence: 99%

Magnetoelastic Materials for Monitoring and Controlling Cells and Tissues

Meyers

Ong

2021

Sustainability

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Advances in cell and tissue therapies are slow to be implemented in the clinic due to the limited standardization of safety and quality control techniques. Current approaches for monitoring cell and tissue manufacturing processes are time and labor intensive, costly, and lack commercial scalability. One method to improving in vitro manufacturing processes includes utilizing the coupled magnetic and mechanical properties of magnetoelastic (ME) materials as passive and wireless sensors and actuators. Specifically, ME materials can be used in quantifying cell adhesion, detecting contamination, measuring biomarkers, providing biomechanical stimulus, and enabling cell detachment in bioreactors. This review outlines critical design considerations for ME systems and summarizes recent developments in utilizing ME materials for sensing and actuation in cell and tissue engineering.

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Section: Me Substrate Materialsmentioning

confidence: 99%

Magnetoelastic Materials for Monitoring and Controlling Cells and Tissues

Meyers

Ong

2021

Sustainability

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“…The working principle is based on the change in resonant frequency of an ME biosensor in response to the specific binding between the target and the bio-probes (mass load of the target) under an alternative magnetic field [2]. To date, ME biosensors have been successfully developed for the detection of food-borne pathogens, virus, chemicals and heavy metal ions such as Escherichia coli [3], Listeria monocytogens [3], Salmonella Typhimurium [3,4], Bacillus anthracis spores [4,5], Staphylococcus aureus [3,6], Staphylococcus epidermidis [7], swine fever virus [8], uranyl [9], Pb 2+ , Cd 2+ , Cu 2+ and Hg 2+ [10,11] in water. Particularly, the development of portable resonant signal interrogation devices [12,13,14,15] and direct detection of pathogens on the surface of spinach leaves [16], tomatoes [17] and eggshells [18] makes in-situ detection of ME sensors to be possible.…”

Section: Introductionmentioning

confidence: 99%

Damping Force and Loading Position Dependence of Mass Sensitivity of Magnetoelastic Biosensors in Viscous Liquid

Zhang

Chen

Zhu

et al. 2018

Sensors

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We established the vibration governing equation for a magnetoelastic (ME) biosensor with target loading in liquid. Based on the equation, a numerical simulation approach was used to determine the effect of the target loading position and viscous damping coefficient on the node (“blind points”) and mass sensitivity (Sm) of an ME biosensor under different order resonances. The results indicate that viscous damping force causes the specific nodes shift but does not affect the overall variation trend of Sm as the change of target loading position and the effect on Sm gradually reduces when the target approaches to the node. In addition, Sm decreases with the increase of viscous damping coefficient but the tendency becomes weak at high-order resonance. Moreover, the effect of target loading position on Sm decreases with the increase of viscous damping coefficient. Finally, the results provide certain guidance on improving the mass sensitivity of an ME biosensor in liquid by controlling the target loading position.

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“…There have been several reports combining gelatin and electrical properties [17,19,20,21,22,23] and its use as a biosensor, such as in biomedical applications and in the denaturation process [24,25,26,27,28,29]. However, the literature reporting gelatin as a temperature sensor is scarce.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of a Gelatin Temperature Sensor Based on Electrical Capacitance

Silva

Sorli

Calado

et al. 2016

Sensors

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The innovative use of gelatin as a temperature sensor based on capacitance was studied at a temperature range normally used for meat cooking (20–80 °C). Interdigital electrodes coated by gelatin solution and two sensors of different thicknesses (38 and 125 µm) were studied between 300 MHz and 900 MHz. At 38 µm, the capacitance was adequately measured, but for 125 µm the slope capacitance versus temperature curve decreased before 900 MHz due to the electrothermal breakdown between 60 °C and 80 °C. Thus, for 125 µm, the capacitance was studied applying 600 MHz. Sensitivity at 38 µm at 868 MHz (0.045 pF/°C) was lower than 125 µm at 600 MHz (0.14 pF/°C), influencing the results in the simulation (temperature range versus time) of meat cooking; at 125 µm, the sensitivity was greater, mainly during chilling steps. The potential of gelatin as a temperature sensor was demonstrated, and a balance between thickness and frequency should be considered to increase the sensitivity.

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Quantification of Staphylococcus epidermidis using a wireless, mass-responsive sensor

Cited by 8 publications

References 23 publications

Magnetoelastic Materials for Monitoring and Controlling Cells and Tissues

Magnetoelastic Materials for Monitoring and Controlling Cells and Tissues

Damping Force and Loading Position Dependence of Mass Sensitivity of Magnetoelastic Biosensors in Viscous Liquid

Feasibility of a Gelatin Temperature Sensor Based on Electrical Capacitance

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