Postdoctoral Research Fellow
Overview
I have received my PhD in organic electronics from the University of Bordeaux, France, in 2016. Since then, I have been working as postdoctoral research fellow at Queensland Brain Institute, the University of Queensland in Australia, carrying out research in organic electronics, experimental physics, materials science, optics and neuroscience.
My main research project is focused on applying organic electronics to neuroscience, particularly to optogenetic studies involving light manipulation of neurons. Within this framework, I published, inter alia, 3 research articles demonstrating successful detection and stimulation of neuronal activity using organic photodetectors (OPDs) and organic light-emitting diodes (OLEDs), and currently work on implantable organic neural probes. On a more fundamental level, I have pioneered the discovery of a novel method of light detection in OPDs, as well as contributed to the development of ultra-efficient infrared OPDs, reflected in many high-impact research articles.
My other areas of research also covers the development of smart wearable sensors for optimization of therapy in patients with Parkinson's Disease and other neurological movement disorders.
Qualifications
- Doctoral Diploma, Université Bordeaux 0
Publications
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Journal Article: DNA G-quadruplex is a transcriptional control device that regulates memory
Marshall, Paul R., Davies, Joshua, Zhao, Qiongyi, Liau, Wei-Siang, Lee, Yujin, Basic, Dean, Periyakaruppiah, Ambika, Zajaczkowski, Esmi L., Leighton, Laura J., Madugalle, Sachithrani U., Musgrove, Mason, Kielar, Marcin, Brueckner, Arie Maeve, Gong, Hao, Ren, Haobin, Walsh, Alexander, Kaczmarczyk, Lech, Jackson, Walker S., Chen, Alon, Spitale, Robert C. and Bredy, Timothy W. (2024). DNA G-quadruplex is a transcriptional control device that regulates memory. The Journal of Neuroscience, e0093232024. doi: 10.1523/jneurosci.0093-23.2024
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Conference Publication: Advances in Organic Photodetectors
Dindault, Chloé, Kielar, Marcin, Roche, Gilles H., Chambon, Sylvain, Leyney, Martial, Wantz, Guillaume and Hirsch, Lionel (2023). Advances in Organic Photodetectors. 2023 International Electron Devices Meeting (IEDM), San Francisco, CA United States, 9-13 December 2023. Piscataway, NJ United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/iedm45741.2023.10413743
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Journal Article: Solution‐Processed Ternary Organic Photodetectors with Ambipolar Small‐Bandgap Polymer for Near‐Infrared Sensing
Bhat, Gurudutt, Kielar, Marcin, Sah, Pankaj, Pandey, Ajay K. and Sonar, Prashant (2023). Solution‐Processed Ternary Organic Photodetectors with Ambipolar Small‐Bandgap Polymer for Near‐Infrared Sensing. Advanced Electronic Materials, 10 (2) 2300583, 1-9. doi: 10.1002/aelm.202300583
Publications
Journal Article
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DNA G-quadruplex is a transcriptional control device that regulates memory
Marshall, Paul R., Davies, Joshua, Zhao, Qiongyi, Liau, Wei-Siang, Lee, Yujin, Basic, Dean, Periyakaruppiah, Ambika, Zajaczkowski, Esmi L., Leighton, Laura J., Madugalle, Sachithrani U., Musgrove, Mason, Kielar, Marcin, Brueckner, Arie Maeve, Gong, Hao, Ren, Haobin, Walsh, Alexander, Kaczmarczyk, Lech, Jackson, Walker S., Chen, Alon, Spitale, Robert C. and Bredy, Timothy W. (2024). DNA G-quadruplex is a transcriptional control device that regulates memory. The Journal of Neuroscience, e0093232024. doi: 10.1523/jneurosci.0093-23.2024
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Bhat, Gurudutt, Kielar, Marcin, Sah, Pankaj, Pandey, Ajay K. and Sonar, Prashant (2023). Solution‐Processed Ternary Organic Photodetectors with Ambipolar Small‐Bandgap Polymer for Near‐Infrared Sensing. Advanced Electronic Materials, 10 (2) 2300583, 1-9. doi: 10.1002/aelm.202300583
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Bhat, Gurudutt, Kielar, Marcin, Rao, Haixia, Gholami, Mahnaz D., Mathers, Isabel, Larin, Astrid C. R., Flanagan, Thomas, Erdenebileg, Enkhtur, Bruno, Annalisa, Pannu, Amandeep Singh, Fairfull‐Smith, Kathryn E., Izake, Emad L., Sah, Pankaj, Lam, Yeng Ming, Pandey, Ajay K. and Sonar, Prashant (2022). Back Cover Image. InfoMat, 4 (12). doi: 10.1002/inf2.12395
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Optogenetic stimulation and spatial localization of neurons using a multi-OLED approach
Kielar, Marcin, Marek, Roger, Kenna, Matthew, Cole, Cameron M., Xu, Li, Yambem, Soniya D., Sah, Pankaj and Pandey, Ajay K. (2022). Optogenetic stimulation and spatial localization of neurons using a multi-OLED approach. ACS Photonics, 9 (10), 3279-3290. doi: 10.1021/acsphotonics.2c00590
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Bhat, Gurudutt, Kielar, Marcin, Rao, Haixia, Gholami, Mahnaz D., Mathers, Isabel, Larin, Astrid C. R., Flanagan, Thomas, Erdenebileg, Enkhtur, Bruno, Annalisa, Pannu, Amandeep Singh, Fairfull‐Smith, Kathryn E., Izake, Emad L., Sah, Pankaj, Lam, Yeng Ming, Pandey, Ajay K. and Sonar, Prashant (2022). Versatile aza‐BODIPY ‐based low‐bandgap conjugated small molecule for light harvesting and near‐infrared photodetection. InfoMat, 4 (12) e12345. doi: 10.1002/inf2.12345
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Bhat, Gurudutt, Liu, Qian, Kielar, Marcin, Hamada, Yuya, Michinobu, Tsuyoshi, Sah, Pankaj, Ko Kyaw, Aung Ko, Pandey, Ajay K. and Sonar, Prashant (2021). Energy-level manipulation in novel indacenodithiophene-based donor–acceptor polymers for near-infrared organic photodetectors. ACS Applied Materials and Interfaces, 13 (25) acsami.1c03643, 29866-29875. doi: 10.1021/acsami.1c03643
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Direct detection of neuronal activity using organic photodetectors
Kielar, Marcin, Gooch, Helen, Xu, Li, Pandey, Ajay K. and Sah, Pankaj (2020). Direct detection of neuronal activity using organic photodetectors. ACS Photonics, 8 (1) acsphotonics.0c01378, 228-237. doi: 10.1021/acsphotonics.0c01378
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Hamid, Tasnuva, Kielar, Marcin, Yambem, Soniya D. and Pandey, Ajay K. (2020). Multifunctional Diode Operation of Tetracene Sensitized Polymer:Fullerene Heterojunctions with Simultaneous Electroluminescence in Visible and NIR Bands. Advanced Electronic Materials, 7 (1) 2000824, 2000824. doi: 10.1002/aelm.202000824
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Light detection in open-circuit voltage mode of organic photodetectors
Kielar, Marcin, Hamid, Tasnuva, Wiemer, Martin, Windels, François, Hirsch, Lionel, Sah, Pankaj and Pandey, Ajay K. (2019). Light detection in open-circuit voltage mode of organic photodetectors. Advanced Functional Materials, 30 (9) 1907964, 1-9. doi: 10.1002/adfm.201907964
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Spectral changes associated with transmission of OLED emission through human skin
Yambem, Soniya D., Brooks-Richards, Trent L., Forrestal, David P., Kielar, Marcin, Sah, Pankaj, Pandey, Ajay K. and Woodruff, Maria A. (2019). Spectral changes associated with transmission of OLED emission through human skin. Scientific Reports, 9 (1) 9875, 9875. doi: 10.1038/s41598-019-45867-9
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Organic optoelectronic diodes as tactile sensors for soft-touch applications
Kielar, Marcin, Hamid, Tasnuva, Wu, Liao, Windels, François, Sah, Pankaj and Pandey, Ajay K. (2019). Organic optoelectronic diodes as tactile sensors for soft-touch applications. ACS Applied Materials & Interfaces, 11 (24) acsami.9b04671, 21775-21783. doi: 10.1021/acsami.9b04671
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Insights into the failure mechanisms of organic photodetectors
Kielar, Marcin, Daanoune, Mehdi, François-Martin, Olivier, Flament, Bruno, Dhez, Olivier, Pandey, Ajay K., Chambon, Sylvain, Clerc, Raphaël and Hirsch, Lionel (2018). Insights into the failure mechanisms of organic photodetectors. Advanced Electronic Materials, 4 (2) 1700526, 1700526. doi: 10.1002/aelm.201700526
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Malytska, Iuliia, Mézière, Cécile, Kielar, Marcin, Hirsch, Lionel, Wantz, Guillaume, Avarvari, Narcis, Kuhn, Alexander and Bouffier, Laurent (2017). Bipolar electrochemistry with organic single crystals for wireless synthesis of metal–organic Janus objects and asymmetric photovoltage generation. The Journal of Physical Chemistry Part C, 121 (23), 12921-12927. doi: 10.1021/acs.jpcc.7b02678
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Kielar, Marcin, Dhez, Olivier, Pecastaings, Gilles, Curutchet, Arnaud and Hirsch, Lionel (2016). Long-Term Stable Organic Photodetectors with Ultra Low Dark Currents for High Detectivity Applications. Scientific Reports, 6 (1) 39201, 39201 .1-39201 .11. doi: 10.1038/srep39201
Conference Publication
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Advances in Organic Photodetectors
Dindault, Chloé, Kielar, Marcin, Roche, Gilles H., Chambon, Sylvain, Leyney, Martial, Wantz, Guillaume and Hirsch, Lionel (2023). Advances in Organic Photodetectors. 2023 International Electron Devices Meeting (IEDM), San Francisco, CA United States, 9-13 December 2023. Piscataway, NJ United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/iedm45741.2023.10413743
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Bhat, Gurudutt, Kielar, Marcin, Gholami, Mahnaz, Sah, Pankaj, Pandey, Ajay K. and Sonar, Prashant M. (2023). Low bandgap donor-acceptor-donor-based TPA-azaBODIPY-TPA small molecule for flexible near-infrared organic photodetectors. Organic and Hybrid Sensors and Bioelectronics XVI, San Diego, CA United States, 20–21 August 2023. Bellingham, WA United States: SPIE. doi: 10.1117/12.2677285
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Kielar, Marcin, Marek, Roger, Gooch, Helen, Cole, Cameron M., Kenna, Matthew, Xu, Li, Yambem, Soniya D., Pandey, Ajay K. and Sah, Pankaj (2023). Stability, reliability, and performance of organic light-emitting diodes and photodetectors in optogenetic studies. SPIE Organic Photonics + Electronics, San Diego, CA, United States, 20-25 August 2023. Bellingham, WA, United States: International Society for Optical Engineering. doi: 10.1117/12.2677124
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Ultra-efficient all-printed organic photodetectors
Kielar, Marcin, Dhez, Olivier and Hirsch, Lionel (2017). Ultra-efficient all-printed organic photodetectors. Conference on Organic Sensors and Bioelectronics IX, San Diego, CA, United States, Aug 28-29, 2016. Bellingham, WA, United States: SPIE. doi: 10.1117/12.2236915
Other Outputs
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Organic photodetectors: design, characterization and study of degradation mechanisms
Kielar, Marcin (2016). Organic photodetectors: design, characterization and study of degradation mechanisms. PhD Thesis, Doctoral School of Physical Sciences and Engineering, The University of Bordeaux, France.
