MEL Theory
A theory of superconductivity we derived ourselves, published in full, and tested against the real materials it has to explain
01
MEL Theory
The MEL (Modulated Electron Lattice) Theory proposes a next-generation superconductivity model that builds upon and surpasses the limitations of earlier frameworks such as BCS and CDW.
The MEL Theory describes a new kind of superconductivity that arises when the density of electrons inside a material gently oscillates in space, like a rhythm or a wave, and this pattern becomes coherently aligned with the vibrations of the atomic lattice.
This interaction is called "Modulated Coherent Coupling".
It means that electrons are not acting individually, but as an organized wave that moves in step with the atoms themselves, eliminating electrical resistance in the process.
The theory has been tested against real YBCO and BSCCO superconductors, reproducing their measured critical temperatures (Tc) and the dependence of Tc on doping. The full derivation is public as arXiv:2512.03368 and arXiv:2601.14500.
On this basis, Hyunsung TNC reports quantitative agreement between theoretical predictions and experimental results based on the MEL framework.
02
Inability of BCS theory to explain superconductivity beyond low temperatures
The BCS theory (Bardeen-Cooper-Schrieffer Theory), introduced in 1957, is a foundational model for explaining superconductivity in conventional materials.
It describes how Cooper pairs are formed through weak electron–phonon interactions, leading to the emergence of the superconducting state.
However, the BCS theory is based on low-energy scales and the weak coupling approximation,
making it applicable only to low-temperature superconductors, typically below 30 K.
It fails to explain the mechanisms behind high-temperature superconductors such as YBCO (92 K) and BSCCO (110 K),
and provides no theoretical basis or predictive framework for room-temperature superconductivity.
In summary, the BCS theory has fundamental limitations and cannot be applied to high or room-temperature superconductors.
03
Why the MEL Theory is a Breakthrough
The MEL Theory overcomes the limitations of the traditional BCS theory by offering a quantitative explanation for the formation mechanisms of both high- and room-temperature superconductors. It introduces a new pathway: increased electron density → electron crystallization → enhanced phonon coupling → Modulated Coherent Coupling, scientifically explaining how electron coupling energy can be sustained even at elevated temperatures.
Through Monte Carlo simulations, MEL Theory has been tested by successfully reproducing the transition temperature (Tc) trends and doping dependences of the Bi-2212 family of high-temperature superconductors. These simulations indicate intrinsic consistency between MEL predictions and the measured behavior of real superconducting materials.
That agreement between simulation and measured data is what separates MEL from a hypothesis: it makes predictions that can be checked against materials which already exist, and they hold. It is what makes the theory usable as a design tool rather than only an explanation, across high-temperature systems, room-temperature systems, and the quantum materials beyond them.
04
AI-Driven Superconductor Composition Design Platform: SuperMatics™
SuperMatics is an AI-driven superconductor composition design platform built on the MEL (Modulated Electron Lattice) Theory.
It transforms the development of next-generation superconductors from trial-and-error experimentation into a data and physics-driven engineering design process.
SuperMatics™ provides the following capabilities:
• AI-based automatic generation and evaluation of composition candidates
By learning from decades of accumulated experimental data on high-temperature superconductors and integrating MEL-derived physical models, the platform automatically identifies candidate compositions optimized for target Tc, stability, and other key parameters.
• AI simulations for enhancing the performance of existing superconductors
SuperMatics™ predicts changes in transition temperature, coherence properties, and superfluid stiffness for established materials such as YBCO and Bi-2212, enabling the design of improved structural and doping configurations.
• Predictive modeling across thin-film, interface, and high-pressure environments
Through AI-driven simulations that incorporate real experimental conditions, the platform supports composition design that closely reflects practical manufacturing environments.
• Integrated manufacturing and production workflow using experimental data
SuperMatics™ continuously learns from synthesis results, STS measurements, and structural analyses, enabling an end-to-end development cycle:
composition design → sample fabrication → physical property validation → process optimization.
This creates a unified solution for superconductor development from theory to production.
Hyunsung TNC Co., Ltd.
Experimental Results on
Room-Temperature Superconductor Candidates
Cd-based superconductor experiment
A room-temperature, ambient-pressure superconductor candidate, characterized by PXRD and SQUID
Working with a research team at Ewha Womans University, Hyunsung TNC has synthesized and characterized its candidate materials by PXRD and SQUID. That work now extends internationally: a research infrastructure and facility use agreement with BNC Labs at the University of California, Berkeley, held through SuperMatics Inc., the U.S. company founded with backing from Hyunsung TNC, and a strategic partnership and R&D service agreement with CAN Superconductors.
RESULT 01
PXRD Analysis
Powder X-ray diffraction (PXRD) resolves a crystal's atomic arrangement from the angles at which it scatters an X-ray beam. It tells us whether a synthesis produced the compound it was designed to produce, as a single phase, with no impurity phases alongside it. It is the first gate every candidate has to pass: if the structure is not the one the theory called for, nothing downstream is worth measuring.
The measured pattern of Hyunsung TNC's synthesized compound Cd XX O₆ matches the structure MEL Theory predicted for it, with no significant secondary phases. The material we made is the material we designed, and that is the point: the theory called the structure before the furnace ran, and the diffractometer agreed.
RESULT 02
SQUID Analysis
A SQUID magnetometer (Superconducting Quantum Interference Device) resolves magnetic signals small enough to track how a sample's magnetization responds to applied field and temperature. What it is looking for is a transition: a sharp change in behavior at one temperature, and the critical temperature (Tc) at which it happens. That is the signature that counts, and it is the one we hold candidates to, because a magnetic response on its own is something nearly every material has.
In the Cd XX O₆ compound we have observed exactly that transition, at 37.1 °C (310 K), at ambient pressure. Reproduction across batches and verification at independent laboratories are underway now, with Ewha Womans University, BNC Labs at the University of California, Berkeley, and CAN Superconductors. The theory that produced the candidate is already public, as arXiv:2512.03368 and arXiv:2601.14500. We would rather be checked than believed.
Hyunsung TNC Co., Ltd.
High-Purity Metal Compound Composition Technology
This is the core technology that determines the performance and stability of superconductors.
POINT 01
The key to superconductors’ performance and stability.
Hyunsung TNC controls impurities down to the ppm level from the raw material stage and has established a precision synthesis process that enables exact compositional ratios between specific metal elements.
This minimizes lattice defects and maximizes charge uniformity and reproducibility of superconducting properties.
POINT 02
Applied to high-temperature and new MEL-based superconductors.
This technology applies to high-temperature superconductors like YBCO and novel MEL-based compositions, crucial for enhancing thin-film uniformity and crystal orientation in deposition processes.
Through proprietary composition design, microstructure analysis, and thermal optimization,
Hyunsung TNC integrates this high-purity composition technology across its manufacturing processes, building a solid foundation for scalable, commercial production.
CTLA Superconducting Thin Film Deposition
Circular Target Laser Ablation
Hyunsung TNC's patented CTLA (Circular Target Laser Ablation) deposition technology is an integrated process that simultaneously synthesizes superconducting compositions and deposits them onto substrates. The method involves irradiating multiple metallic oxide targets (such as Cd and Mg) with laser beams optimized for each element’s wavelength and power, enabling in-situ chemical reactions and precise deposition to occur concurrently.
Unlike conventional methods that rely on pre-synthesized single-composition targets, CTLA induces direct chemical reactions between raw target materials and immediately deposits the resulting superconducting compound onto the substrate with high precision. This eliminates the need for separate target synthesis, significantly reduces composition inhomogeneity, shortens processing time, and lowers production cost, making CTLA a highly efficient and scalable solution for superconducting thin-film manufacturing.