Institute of Microelectronics

M.Sc. Sebastian Kaltenstadler

I studied Communications and Computer Engineering at the University of Ulm, where I received my B.Sc. degree in 2017 and my M.Sc. degree in 2020. My Master Thesis "Analysis of Neural Networks for the Prediction of Stability and Performance of Sigma-Delta ADCs" was supervised by Professor Ortmanns from the Institute of Microelectronics at the University of Ulm.

I havee been working as a research assistant for Professor Rothermel since December 2020. My current research interest is circuit design for implants to measure ciliary muscle potentials.

Student theses

[mt] = Master thesis, [rp] = Bachelor thesis

Past theses

  • Maximilian Fischer
    Entwurf eines Messaufbaus zur Charakterisierung von Knopfzellenbatterien [rp]
  • Finn Ruchti
    Modelling and Measuring Power Consumption of BLE-Communication for Low Power Implants [rp]
  • Felix Birk
    Entwurf und Evaluation eines Messaufbaus für Ziliarmuskelpotenziale [rp]

Publications

2026

6.
F. C. Kortuem, I. Seitz, S. Kaltenstadler, S. Schumayer, T. Peters, B. Sigdel, A. Rothermel, V. Bucher, E. Zrenner, K. -. Bartz-Schmidt and T. Straßer, "Surgical Approach for the Implantation of a Ring Electrode into the Sulcus in a Phakic Non-human Primate", Journal of Refractive Surgery, vol. 42, nr. 2, p. e151 - e160, Feb. 2026.
DOI:10.3928/1081597X-20251217-02

2025

5.
B. Sigdel, S. Schumayer, S. Kaltenstadler, T. Peters, A. Rothermel, V. Bucher, E. Zrenner, K. -. Bartz-Schmidt and T. Straßer, "Real-Time Control of a Focus Tunable Lens for Presbyopia Correction Using Ciliary Muscle Biopotentials and Artificial Neural Networks", Bioengineering 2025, vol. 12, p. 1228, Nov. 2025.
DOI:10.3390/bioengineering12111228

2024

4.
S. Kaltenstadler, B. Sigdel, S. Schumayer, R. Steinhoff, T. Straßer and A. Rothermel, "An Implantable Ciliary Muscle LFP Recording and Transmitting System", 46th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Orlando, FL, USA, Jul. 2024.
DOI:10.1109/EMBC53108.2024.10781543
3.
S. Kaltenstadler, S. Schumayer, B. Sigdel, E. Zrenner, V. Bucher, A. Rothermel and T. Straßer, "Intraocular sensor for wireless in vivo real time recording of ciliary muscle potentials during accommodation", Investigative Ophthalmology & Visual Science, vol.65, p. 6319, Jun. 2024. https://iovs.arvojournals.org/article.aspx?articleid=2794739.
2.
P. Kässer, S. Kaltenstadler, J. Conrad, J. Wagner, O. Ismail and M. Ortmanns, "Stability Prediction of Δ∑ Modulators using Artificial Neural Networks", IEEE International Symposium on Circuits and Systems (ISCAS), Singapore, May 2024.
DOI:10.1109/ISCAS58744.2024.10557868

2023

1.
R. Steinhoff, S. Moll, S. Kaltenstadler and A. Rothermel, "Retina Stimulator with Channel Dependent Arbitrary Waveforms in 28nm CMOS Process", 21st IEEE Interregional NEWCAS Conference (NEWCAS), pp. 1.5, Edinburgh, United Kingdom, Jun. 2023.
DOI:10.1109/NEWCAS57931.2023.10198084

Research Assistent

Sebastian Kaltenstadler