Researchers quantify biomolecules with 3.6% error on a chip

Terahertz metasensors are promising platforms for quantitative biomolecular fingerprint identification, yet existing implementations lack the capability for quantitative, multi-component analysis. Researchers present an on-chip terahertz metasensor, fabricated on a 20 μm-thick lithium niobate wafer, capable of identifying and quantifying mixtures of four biomolecules with an error below 3.60%.