Related Experiment Video
Updated: Jan 28, 2026

Brain Mapping Using a Graphene Electrode Array
Published on: October 20, 2023
Unidirectional Real-Time Photoswitching of Diarylethene Molecular Monolayer Junctions with Multilayer Graphene
Jeongmin Koo1, Yeonsik Jang1, León Martin2
1Department of Physics and Astronomy, and Institute of Applied Physics , Seoul National University , Seoul 08826 , Korea.
Abstract:
We fabricate and characterize vertical molecular junctions consisting of self-assembled monolayers of diarylethene (DAE) contacted by a multilayer graphene (MLG) electrode on the top and gold on the bottom. The DAE molecular junctions show two stable electrical states, a closed state (high conductance) or an open state (low conductance), which are created upon illumination with UV or visible light, respectively. For the Au-DAE-MLG junction structure, we observe that the current levels between the two conductance states are separated by 2 orders of magnitude. However, in a real-time measurement, we observe only unidirectional switching behavior from the open to the closed state.
Related Concept Videos
Real Time RT-PCR
The real-time quantification of the number of amplified products is...
Real Gases: Effects of Intermolecular Forces and Molecular Volume Deriving Van der Waals Equation
P-N junction
Standard Electrode Potentials
The Neuromuscular Junction
Anchoring Junctions

