Anatoly Zatsepin, Head of UrFU Laboratory of Hybrid Technologies and Metamaterials
Photo Credit: UrFU press service
Scientific Frontline: Extended "At a Glance" Summary: Zirconium Dioxide Functional Nanomaterial
The Core Concept: A novel, ultra-low voltage compact capacitor crafted from a zirconium dioxide nanopowder that functions as a highly efficient energy accumulator.
Key Distinction/Mechanism: Unlike classical compact capacitors that fail due to tunneling leakage currents when scaled down, this new device relies on the tunneling effect of electron localization near a charged dielectric surface. It effectively reverses a conventional supercapacitor by utilizing a dielectric material that conducts current via quantum effects, rather than relying on standard carbon electrodes.
Major Frameworks/Components:
- Zirconium Dioxide Nanopowder: Provides a massive surface area, making the material sensitive enough to detect individual molecules.
- Dielectric Electrode Modification: Replaces traditional carbon electrodes with a naturally non-conducting dielectric that operates through quantum properties.
- Solid-State Ionic Framework: Enables stable, functional energy storage at ultra-low voltages.
- Quantum Tunneling Localization: Utilizes specific electron localization to bypass the tunneling breakdown limitations of classical capacitor design.
Branch of Science: Materials Science, Nanotechnology, Quantum Physics, and Nanoelectronics.
Future Application: The technology holds immense promise for sub-volt processors, smartphones, gas sensors, RFID systems, medical devices, aerospace, and automotive engineering. Future developments also target bionanoengineering and electronics capable of surviving strong neutron fields.
Why It Matters: This breakthrough successfully circumvents the physical limitations of tunneling breakdown in microelectronics, introducing a biocompatible, easily processed, and cost-effective nanomaterial capable of transforming modern energy storage and sensor technologies.
A Russian scientific group from the Joint Institute for Nuclear Research (Dubna) and Ural Federal University (Yekaterinburg), in cooperation with colleagues from Kazakhstan and Azerbaijan, has created samples of tiny capacitors based on zirconium dioxide. They operate at ultra-low voltages based on new physical principles and are suitable for ultra-efficient electronics and microsystems. Their main advantages are biocompatibility, ease of processing, and relatively low product costs. A description of the research was published in the Advanced Journal of Chemistry.
One of the main challenges in creating compact capacitors is the tunneling leakage current effect. When the distance between the plates of classical capacitors is reduced, tunneling breakdown occurs, and the device fails.
"The problem can be partially solved using expensive crystal design technologies, but it has not yet been possible to completely 'defeat' physics in this way," explains Anatoly Zatsepin, head of the UrFU Laboratory of Hybrid Technologies and Metamaterials.
Russian scientists proposed a new concept using a related physical phenomenon—the tunneling effect of electron localization near a charged dielectric surface. They effectively "reversed" a conventional supercapacitor: they replaced the carbon electrode with a dielectric, a material that normally does not conduct electricity. In the new design, the dielectric begins to conduct current due to a quantum effect.
The result is a nanopowder with a unique structure. Due to the large surface area of the particles, the material is extremely sensitive—it can "sense" even individual molecules. Therefore, it can be used not only as an energy storage device but also as a material for sensors.
"Solid-state ionic capacitors are in high demand in micro- and nanoelectronics with minimal energy consumption. They are promising for sub-volt processors, smartphones, gas sensors, RFID systems, household and medical devices, aerospace, and the automotive industries," emphasizes Zatsepin.
Currently, only laboratory samples have been created. Together with colleagues from Uzbekistan and Kazakhstan, the scientists are developing elements of so-called homogeneous electronics capable of operating in strong neutron fields and at high temperatures.
"Our team has sufficient technical capabilities and competencies to create such materials," says Alexander Doroshkevich, head of the sector at the Laboratory of Neutron Physics at the Joint Institute for Nuclear Research.
In the future, the work is planned to expand into bionanoengineering (due to the biocompatibility of nanoparticles) and radiation technologies. The scientists are seeking partners and additional funding.
Reference: The material was created with the participation of specialists from Russia (JINR, UrFU, and Dubna State University), Kazakhstan (Karaganda Industrial University and Korkyt Ata Kyzylorda University), Azerbaijan (the Innovation and Digital Development Agency and Khazar University), and the G. Nadjakov Institute of Solid State Physics (Bulgaria).
Published in journal: Advanced Journal of Chemistry, Section A
Authors: Altyn Altynbassova, Sholpan O. Yespenbetova, Gulzhan Balykbayeva, Dauren Kurbanov, Nurbol Appazov, Indira Yespanova, Alexandr Doroshkevich, Saule Ainabekova, Elmar Asgerov, Anastasiya Kruglyak, Anatoly Zatsepin, Zdravka Slavkova, and Saltanat Dabylova
Source/Credit: Ural Federal University | Anastasia Pyankova
Edited by: Scientific Frontline
Reference Number: ms051926_01
.jpg)