Ruth Arwani

All Publications

• Optimizing the open-circuit voltage and overall performance for indoor organic photovoltaics via wide-gap polymeric donor materials ORGANIC ELECTRONICS Theunissen, D., Jiang, X., Vanderspikken, J., Arwani, R., Marks, A., Kumar, R., Leten, L., Valkeneers, K., Mertens, S., Lutsen, L., Salleo, A., Vandewal, K., Maes, W. 2026; 152

  View details for DOI 10.1016/j.orgel.2026.107401

  View details for Web of Science ID 001708718700001

• Design, synthesis, and photovoltaic performance of regioisomeric D18-Impact of cross-conjugation on electronic structure and solar cell efficiency ORGANIC ELECTRONICS Valkeneers, K., Leten, L., Gielen, S., Cardeynaels, T., Mertens, S., Vanderspikken, J., Arwani, R., Marks, A., Salleo, A., Kumar, R., Lutsen, L., Vandewal, K., Maes, W. 2025; 145

  View details for DOI 10.1016/j.orgel.2025.107309

  View details for Web of Science ID 001544285800002

• Stretchable ionic-electronic bilayer hydrogel electronics enable in situ detection of solid-state epidermal biomarkers. Nature materials Arwani, R. T., Tan, S. C., Sundarapandi, A., Goh, W. P., Liu, Y., Leong, F. Y., Yang, W., Zheng, X. T., Yu, Y., Jiang, C., Ang, Y. C., Kong, L., Teo, S. L., Chen, P., Su, X., Li, H., Liu, Z., Chen, X., Yang, L., Liu, Y. 2024; 23 (8): 1115-1122

  Abstract

  Continuous and in situ detection of biomarkers in biofluids (for example, sweat) can provide critical health data but is limited by biofluid accessibility. Here we report a sensor design that enables in situ detection of solid-state biomarkers ubiquitously present on human skin. We deploy an ionic-electronic bilayer hydrogel to facilitate the sequential dissolution, diffusion and electrochemical reaction of solid-state analytes. We demonstrate continuous monitoring of water-soluble analytes (for example, solid lactate) and water-insoluble analytes (for example, solid cholesterol) with ultralow detection limits of 0.51 and 0.26 nmol cm-2, respectively. Additionally, the bilayer hydrogel electrochemical interface reduces motion artefacts by a factor of three compared with conventional liquid-sensing electrochemical interfaces. In a clinical study, solid-state epidermal biomarkers measured by our stretchable wearable sensors showed a high correlation with biomarkers in human blood and dynamically correlated with physiological activities. These results present routes to universal platforms for biomarker monitoring without the need for biofluid acquisition.

  View details for DOI 10.1038/s41563-024-01918-9

  View details for PubMedID 38867019

  View details for PubMedCentralID 3126616