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Direct electrochemical cortisol detection via transition-resolved interrogation at a defect-engineered graphene interface

Continuous tracking of cortisol is central to understanding human stress physiology, yet direct electrochemical detection without biological receptors remains challenging despite its promise for stable and dynamic sensing. Electrochemical reduction of cortisol typically occurs at highly negative potentials, where parasitic interfacial currents, hydrogen evolution, and substantial capacitive…

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NASA Ames Stars of the Month: September 2026

The NASA Ames Science Directorate recognizes the outstanding contributions of (pictured left to right) Steve Ormsby, Aphrodite Kostakis, Alejando Borlaff, Sarah Nickerson, Martina Caussi, Keiko…

NASA Ames Stars of the Month: September 2026

The NASA Ames Science Directorate recognizes the outstanding contributions of (pictured left to right) Steve Ormsby, Aphrodite Kostakis, Alejando Borlaff, Sarah Nickerson, Martina Caussi, Keiko…

More from Wednesday 16 September →