Adhesive for Biosensors

A new adhesive designed for use in the assembly of biosensors performs well with stainless steel, often central to the construction of such equipment.

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Adhesive for Biosensors

A new adhesive designed for use in the assembly of biosensors performs well with stainless steel, often central to the construction of such equipment.

Based on a long-proven consumer electronics adhesive featuring low-temperature curing and drop resistance, a new medical-grade adhesive expands upon its capabilities with non-cytotoxicity. The addition helps the adhesive meet the standards (DIN EN ISO 10993-5) necessary to classify it as a medical-grade adhesive.

DELO MONOPOX MG3727 is reportedly tailored ideally for use in the assembly of biosensors, including ECG/EKG electrodes. As stainless steel is often central to the construction of such equipment, the new adhesive performs well with this substrate material, testing at a compression shear strength of 11 MPa.

Design Details

This one-component, solvent-free and humidity-resistant adhesive features a low Young’s modulus of 160 MPa, making it resistant to cracking under sudden impact, such as if a sensor falls to the ground. A low glass transition temperature of -52 °C helps the adhesive retain its properties across the range of temperature at which a sensor may be utilized.

The adhesive takes 10 minutes to fully cure via a low heat of 90 °C, making it optimal for temperature-sensitive substrates. With a viscosity of 30,000 mPa·s, it can be easily applied via needle dispensing for optimal production efficiency. Blue fluorescence allows for increased process control of dispensing accuracy.

Günther Witek, product manager for medical electronics at DELO, explained, "This is just one of many medical-grade materials we have planned. And, more importantly, we will bring our semicon manufacturing, miniaturization, and equipment expertise to market, enabling our customers to produce astonishing new products."