Background and Purpose
Previous computational work by Kopyltsov and Lukyanov (2007, 2022) modeled the Aires silicon resonator as a MOSFET-like structure: when an electromagnetic field is applied, the self-affine groove pattern causes electric charge carriers to concentrate preferentially in the groove regions, producing a non-uniform charge distribution across the wafer surface.
This 2026 paper by Lukyanov and Makarov tested a direct physical prediction: if charge carriers concentrate in the groove regions under electromagnetic exposure, they should also concentrate there under thermal excitation. Thermal imaging can reveal this indirectly through emissivity differences.
Experimental Setup
- The resonator was placed on a Peltier battery and subjected to periodic heating and cooling by reversing the current polarity
- Surface temperature distribution recorded using a Testo 890 thermal imager (spectral sensitivity: 8–14 μm)
- Three temperature readings tracked: (1) Peltier battery surface, (2) central region with self-affine relief, (3) peripheral region (smooth polished silicon)
Results
Key Measurement Outcome
- During heating, the apparent temperature of the central region (with relief) was consistently significantly higher than the peripheral region (smooth silicon)
- Both regions are parts of the same physical object and therefore must have the same actual temperature
- The only explanation: the emissivity coefficient of the central (relief) region is significantly higher than the smooth peripheral region
- The emissivity of the central region approached that of the Peltier battery surface (ε ≈ 0.8)
| Region | Surface Type | Measured Emissivity | Explanation |
|---|---|---|---|
| Peltier battery surface | Aluminum radiator | ε ≈ 0.8 | Reference — known value |
| Central resonator (with relief) | Self-affine ring grooves | Up to ε ≈ 0.8 | Elevated electron concentration → increased free-electron IR absorption |
| Peripheral resonator | Polished silicon | Much lower | Baseline for undoped smooth silicon |
Connection to Previous Work
- 2007 (Kopyltsov, Lukyanov, Serov, PhysCon 2007): First computational treatment of the resonator's EM response
- 2022 (Kopyltsov, Lukyanov, Serov, ICICT 2022): Computer simulation — published in ICICT Springer proceedings (Vol. 1, pp. 85–92)
- 2026 (Lukyanov, Makarov, ICICT 2026): First experimental physical validation using thermal imaging
Authors and Institution
Gennadi Lukyanov, Ph.D. and Sergei Makarov — Faculty of Control Systems and Robotics, ITMO University, St. Petersburg, Russia
Conclusions
Periodic heating of the Lifetune silicon resonator reveals that the central self-affine relief region consistently emits significantly more infrared radiation than the smooth peripheral silicon — despite being at the same actual temperature. This higher emissivity is explained by elevated free-electron concentration in the groove regions, directly validating the charge concentration model used in electromagnetic simulations.
Source: Lukyanov, G., & Makarov, S. (2026). Experimental study of the behavior of a silicon wafer with self-affine surface relief during periodic heating and cooling. ICICT 2026, London, UK, February 24–27, 2026.