Wafer-scale Chiral Molecule Optical Sensor Using Twisted Carbon Nanotube Films

This technology introduces a novel optical sensor capable of detecting small-molecule enantiomers with high sensitivity and specificity.

The accurate detection of small-molecule enantiomers remains a critical challenge in analytical chemistry and pharmaceutical quality control due to their nearly identical physical and chemical properties. Existing chiral optical sensors often suffer from limited sensitivity and specificity, making it difficult to distinguish between enantiomers at low concentrations. Furthermore, current fabrication methods for highly sensitive chiral sensors are not easily scalable, hindering their widespread adoption in real-world applications. These limitations underscore the urgent need for innovative sensing technologies that combine high enantioselectivity, sensitivity, and scalable manufacturing.

The technology encompasses a wafer-scale optical sensor that utilizes twisted bilayers of aligned carbon nanotube (CNT) films for the detection of chiral molecules, such as glucose enantiomers, in biological applications. By exploiting the circular dichroism responses inherent to the twisted CNT structures, this sensor can distinguish between different enantiomers in aqueous solutions, achieving detection limits as low as 1 µM concentrations. The sensor fabrication employs a scalable solution-based self-assembly process, making it a promising candidate for widespread biomedical applications.

• Biomedical research and diagnostics
• Disease monitoring and treatment
• Pharmaceutical development, specifically in the study of drug enantiomers
• Chemical and biological sensing applications

Doumani, J., Lou, M., Dewey, O. et al. Engineering chirality at wafer scale with ordered carbon nanotube architectures. Nat Commun 14, 7380 (2023). https://doi.org/10.1038/s41467-023-43199-x

Jonathan Tyler
801-587-0515
jonathan.tyler@utah.edu