Related Experiment Video
Updated: Jan 27, 2026
07:46
A Method for Growing Bio-memristors from Slime Mold
Published on: November 2, 2017
9.3K
Reversible Charge Inversion Enables Field-Programmable Nanofluidic Memristor and Synapse for Neuromorphic
D Manikandan1, Suman Chakraborty1
1Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India.
Nano Letters
|January 26, 2026
Summary
This study introduces a novel unipolar memristor with dual-mode memory for charge and water transport. Its unique mechanism enables new possibilities in neuromorphic computing and adaptive systems.
Area of Science:
- Materials Science
- Nanotechnology
- Computational Neuroscience
Background:
- Memristors are crucial for brain-inspired computing due to their history-dependent conductance.
- Existing memristors often require structural asymmetry or chemical modification for specific functionalities.
Purpose of the Study:
- To demonstrate a unipolar memristor exhibiting dual-mode memory in both ionic conductance and electroosmotic flow.
- To elucidate the novel mechanism behind this behavior and its potential applications.
Main Methods:
- Fabrication and characterization of a unipolar memristor.
- Investigation of ionic conductance and electroosmotic flow hysteresis.
- Implementation of synaptic plasticity emulation and machine learning models.
Main Results:
- The memristor shows pronounced hysteresis in both charge and water transport without structural or chemical modifications.
- A novel mechanism involving reversible charge inversion in a nanoconfined system drives the dual-mode memory.
- Successful emulation of synaptic plasticity and implementation of learning and classification tasks.
Conclusions:
- This work establishes a new class of field-tunable aqueous platforms.
- The findings open avenues for neuromorphic logic, adaptive computing, biointerfacing, and environmental sensing.
Related Concept Videos
01:19Electric Field of a Continuous Line Charge
2.4K
In physics, symmetry in a system means that something in the considered system remains unchanged due to a specific operation to which it is subjected. For example, consider a horizontal square. The square looks the same if its right and left sides are interchanged. Hence, it is symmetric under a right-left interchange.
In calculations of electric fields, symmetry is of great use. For example, while calculating electric fields of continuous charge distributions.
Consider a line element with a...
In calculations of electric fields, symmetry is of great use. For example, while calculating electric fields of continuous charge distributions.
Consider a line element with a...
2.4K
01:30Electric Field of Two Equal and Opposite Charges
7.0K
Atoms generally contain the same number of positively and negatively charged particles, protons, and electrons. Hence, they are electrically neutral. However, the centers of the positive and negative charges do not always coincide. In such a scenario, the electric field of an atom may not be zero.
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
7.0K
01:23Electric Field of a Charged Disk
3.1K
The simplest case of a surface charge distribution is the uniformly charged disk. Calculating its electric field also helps us calculate the electric field of a large plane of charge.
The system's symmetry is in the cylindrical directions across the plane of the charge. As a result, the electric fields created by various surface charge elements nullify each other in the direction parallel to the surface. Thereby, the resulting electric field is perpendicular to the plane. Since the disk is...
The system's symmetry is in the cylindrical directions across the plane of the charge. As a result, the electric fields created by various surface charge elements nullify each other in the direction parallel to the surface. Thereby, the resulting electric field is perpendicular to the plane. Since the disk is...
3.1K
01:23Magnetic Field due to Moving Charges
11.6K
A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
11.6K
02:47The Synapse
132.9K
Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.
132.9K
01:22Motion Of A Charged Particle In A Magnetic Field
6.8K
A charged particle experiences a force when moving through a magnetic field. Consider the field to be uniform and the charged particle to move perpendicular to it. If the field is in a vacuum, the magnetic field is the dominant factor determining the motion. Since the magnetic force is perpendicular to the direction of motion, a charged particle follows a curved path. The particle continues to follow this curved path until it forms a complete circle. Another way to look at this is that the...
6.8K