Couplants in Acoustic Biosensing Systems

Couplants in Acoustic Biosensing Systems

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Acoustic biosensors are widely used in physical, jumbo gourmet tava chemical, and biosensing applications.One of the major concerns in acoustic biosensing is the delicacy of the medium through which acoustic waves propagate and reach acoustic sensors.Even a small airgap diminishes acoustic signal strengths due to high acoustic impedance mismatch.

Therefore, the presence of a coupling medium gumball bere to create a pathway for an efficient propagation of acoustic waves is essential.Here, we have reviewed the chemical, physical, and acoustic characteristics of various coupling material (liquid, gel-based, semi-dry, and dry) and present a guide to determine a suitable application-specific coupling medium.