Related Experiment Video
Updated: Feb 11, 2026
07:23
Fabrication of Nanoheight Channels Incorporating Surface Acoustic Wave Actuation via Lithium Niobate for Acoustic Nanofluidics
Published on: February 5, 2020
6.2K
Thermoelectricity in Heterogeneous Nanofluidic Channels
Long Li1,2, Qinggong Wang1
1Q. Xuesen Laboratory of Space Technology, NO. 104 Youyi Road, Haidian District, Beijing, 100094, China.
Small (Weinheim an Der Bergstrasse, Germany)
|April 20, 2018
Summary
This study demonstrates generating electricity from waste heat using nanofluidic systems. Ionic currents in nanochannels increase with temperature gradients, offering potential for thermal energy conversion.
Area of Science:
- Nanofluidics
- Energy Conversion
- Physical Chemistry
Background:
- Ionic fluids are crucial for energy conversion, desalination, and drug delivery.
- Understanding ionic transport in nanoscale confinements and complex fields is challenging.
Purpose of the Study:
- To investigate ionic transport properties in nanochannels with heterogeneous surfaces under varying temperatures.
- To explore the generation of electricity from temperature gradients in nanofluidic systems.
Main Methods:
- Development of a nanofluidic system utilizing nanochannels with heterogeneous surface properties.
- Observation and analysis of ionic currents under symmetric temperature gradients.
- Evaluation of temperature and channel property contributions to ion motion.
Main Results:
- Steady ionic currents were observed under symmetric temperature gradients.
- Ionic currents showed a linear increase with temperature gradient and nonlinear increase with channel size.
- The phenomenon is analogous to generating electricity from waste heat.
Conclusions:
- The findings offer insights into confined ionic fluid behavior in multiphysical fields.
- The developed system suggests potential applications in thermal energy conversion, temperature sensing, and thermal management.
More Related Videos
Related Concept Videos
01:19Ion Channels
91.5K
The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
91.5K
01:11Channel Rhodopsins
3.3K
Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
3.3K
01:24Non-gated Ion Channels
8.3K
Ion channels are specialized proteins on the plasma membrane that allow charged ions to pass down their electrochemical gradient. Their main function is to maintain the membrane potential which is critical for cell viability. These channels are either gated or non-gated and can transport more than a thousand ions within milliseconds for the cellular event to occur.
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism....
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism....
8.3K
01:28Channels of Non-Verbal Communication
457
Non-verbal communication plays a critical role in human interaction, influencing how individuals perceive emotions and psychological states. It operates through four primary channels: facial expressions, eye contact, body language, and touch. These non-verbal cues help convey meaning beyond spoken language and are often culturally influenced.Facial Expressions and Emotional RecognitionFacial expressions are among the most powerful and universal forms of non-verbal communication. Research has...
457
01:27Uniform Depth Channel Flow
612
Uniform depth channel flow keeps fluid depth consistent along channels such as irrigation canals. In natural channels, such as rivers, approximate uniform flow is often assumed. This condition occurs when the channel’s bottom slope matches the energy slope, balancing potential energy lost from gravity with head loss due to shear stress. This balance prevents depth changes along the channel length, resulting in a steady, uniform flow.Uniform flow in open channels with a constant cross-section...
612
01:21G-Protein Gated Ion Channels
5.8K
GPCRs are primarily responsible for our sense of smell, taste, and vision. The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory...
Sensory...
5.8K