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Author Spotlight: Advancing SERS Technology: Au@Carbon Dot Nanoprobes for Label-Free Analysis and Imaging
Published on: June 9, 2023
Surface group-governed charge storage in carbon dots for a visual memristor
Dongren Zheng1, Tianyang Zhang1, Haizhou Yu1
1State Key Laboratory of Bioinspired Interfacial Materials Science, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou 215123, Jiangsu, China. yangl@suda.edu.cn.
None:
Visual memristors, which integrate resistive switching with optical feedback, are attracting growing interest for neuromorphic computing, nonvolatile storage, and human-machine interfaces. By directly coupling electrical states with optical outputs, such devices enable both data processing and intuitive visualization, providing new opportunities for interactive and multifunctional systems. Here, we innovatively demonstrate a carbon dot (CD)-based visual memristor that combines reliable resistive switching with tunable electroluminescence. The device exhibits stable storage, reproducible hysteresis loops, and multilevel conductance control, while its emission spectra systematically evolve with resistive states, enabling "visible" memory and computation. This dual-mode behavior bridges the electrical and optical domains, closely resembling synaptic plasticity and supporting artificial neuromorphic functions. Benefiting from the unique properties of CDs, including strong luminescence, abundant surface functionalities, and facile solution processing, the proposed device represents a new platform for multifunctional optoelectronic systems. These results open pathways toward next-generation neuromorphic optoelectronics that unify perception, memory, and processing.
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Dot Product
In engineering, the dot product of any two vectors is the product of the magnitudes of the vectors and the cosine of the angle between them. It is denoted by a dot symbol between the two vectors.
Consider a vehicle pulling an object along the ground using a rope. If the rope makes an angle with the horizontal axis, the work done can be calculated using the dot product of the force applied and the object's displacement.
The dot...

