journal article·2026-02-24Open access

Multifunctional, energy-autonomous textile sensors enabled by spray-coated two-dimensional heterostructures

Evgeniya Kovalska, Jack Routledge, Rocco Cancelliere, Hoi Tung Lam, Kavya Sreeja Sadanandan, Bing Wu, Liping Liao, Zdenek Sofer, Ana I. S. Neves, Saverio Russo, Laura Micheli, Monica F. Craciun

npj Flexible Electronics· Volume 10· Issue 1

Abstract

Abstract Two-dimensional (2D) materials offer unprecedented opportunities for energy-autonomous wearable electronics, yet their scalable and environmentally friendly integration into textiles remains a major challenge. Here, we introduce an ultrasonic spray-coating method to fabricate water-processable, surfactant-free 2D heterostructures comprising graphene and transition metal dichalcogenides (TMDs) as electronic dyes on textile fabrics. The resulting lightweight (~1 g/device), flexible textile-integrated triboelectric nanogenerators (TENGs) demonstrate a record-high power density of 793 mW m -2 among single-phase TMD-based textile devices. These TENGs enable self-powered, wearable detection of environmental and physiological parameters, including atmospheric humidity, body temperature, and volatile organic compounds (VOCs) such as acetone and styrene, via a tap-to-sense mechanism. The sensor achieves a record-breaking responsivity of 126% for styrene vapours, making it the first wearable, self-powered styrene sensor. The device’s multifunctionality – driven by thermal modulation of charge transport in the MoS 2 layer – enables reliable body temperature detection with minimal cross-sensitivity to humidity or VOCs, crucial under real-world fluctuations. The sensor maintains mechanical resilience and operational stability over 80 days of continuous use and after 200 bending cycles. This work advances scalable, sustainable strategies for multifunctional, self-powered textile sensors and paves the way toward wearable personalised healthcare technologies with accurate multiparameter sensing.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Gas Sensing Nanomaterials and Sensors · 2D Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (65)

Show source-provided references
1. Meena, J. S., Choi, S. B., Jung, S.-B. & Kim, J.-W. Electronic textiles: new age of wearable technology for healthcare and fitness solutions. Mater. Today Bio 19, 100565 (2023).10.1016/j.mtbio.2023.100565 ↗
2. Libanori, A., Chen, G., Zhao, X., Zhou, Y. & Chen, J. Smart textiles for personalized healthcare. Nat. Electron. 5, 142–156 (2022).10.1038/s41928-022-00723-z ↗
3. Sohail, A., Ali, A., Shaukat, H., Bhatti, F. M. & Ali, S. Integrating self-powered medical devices with advanced energy harvesting: a review. Energy Strat. Rev. 52, 101328 (2024).10.1016/j.esr.2024.101328 ↗
4. Tat, T., Libanori, A., Au, C., Yau, A. & Chen, J. Advances in triboelectric nanogenerators for biomedical sensing. Biosens. Bioelectron. 171, 112714 (2021).10.1016/j.bios.2020.112714 ↗
5. Kim, D. W., Lee, J. H., Kim, J. K. & Jeong, U. Material aspects of triboelectric energy generation and sensors. NPG Asia Mater 12, 1–17 (2020).10.1038/s41427-019-0187-x ↗
6. Tao, Q., Liu, S., Zhang, J., Li, X. & Tao, G. Clinical applications of smart wearable sensors. iScience 26, 107485 (2023).10.1016/j.isci.2023.107485 ↗
7. Hu, J. & Dong, M. Recent advances in two-dimensional nanomaterials for sustainable wearable electronic devices. J. Nanobiotechnol. 22, 1–20 (2024).10.1186/s12951-023-02274-7 ↗
8. Sun, Y. et al. Wearable biodevices based on two-dimensional materials: from flexible sensors to smart integrated systems. Nano Micro Lett 17, 109 (2025).10.1007/s40820-024-01597-w ↗
9. Bolotsky, A., Butler, D., Dong, C., Gerace, K. & Glavin, N. R. Two-dimensional materials in biosensing and healthcare: From in vitro diagnostics to optogenetics and beyond. ACS Nano 13, 9781–9810 (2019).10.1021/acsnano.9b03632 ↗
10. Tan, W. C. & Ang, K.-W. Volatile organic compound sensors based on 2D materials. Adv. Electron. Mater. 7, 2001071 (2021).10.1002/aelm.202001071 ↗
11. Hayasaka, T. et al. An electronic nose using a single graphene FET and machine learning for water, methanol, and ethanol. Microsyst. Nanoeng. 6, 1–13 (2020).10.1038/s41378-020-0161-3 ↗
12. Kovalska, E., Lesongeur, P., Hogan, B. T. & Baldycheva, A. Multi-layer graphene as a selective detector for future lung cancer biosensing platforms. Nanoscale 11, 2476–2483 (2019).10.1039/C8NR08405J ↗
13. Sardana, S., Kaur, H., Arora, B., Aswal, D. K. & Mahajan, A. Self-powered monitoring of ammonia using an MXene/TiO2/cellulose nanofiber heterojunction-based sensor driven by an electrospun triboelectric nanogenerator. ACS Sens 7, 312–321 (2022).10.1021/acssensors.1c02388 ↗
14. Sardana, S. et al. Flexible, humidity- and contamination-resistant superhydrophobic MXene-based electrospun triboelectric nanogenerators for distributed energy harvesting applications. Nanoscale 15, 19369–19380 (2023).10.1039/D3NR04537D ↗
15. Lee, Y. et al. Flexible ferroelectric sensors with ultrahigh pressure sensitivity and linear response over exceptionally broad pressure range. ACS Nano 12, 4045–4054 (2018).10.1021/acsnano.8b01805 ↗
16. Liu, Q., Chen, J., Li, Y. & Shi, G. High-performance strain sensors with fish-scale-like graphene-sensing layers for full-range detection of human motions. ACS Nano 10, 7901–7906 (2016).10.1021/acsnano.6b03813 ↗
17. Liao, M. et al. Wearable, healable, and adhesive epidermal sensors assembled from mussel-inspired conductive hybrid hydrogel framework. Adv. Funct. Mater. 27, 1703852 (2017).10.1002/adfm.201703852 ↗
18. Domingos, I. et al. Printed graphene electrodes for textile-embedded triboelectric nanogenerators for biomechanical sensing. Nano Energy 115, 108688 (2023).10.1016/j.nanoen.2023.108688 ↗
19. Lin, Z. et al. Graphene biointerface for cardiac arrhythmia diagnosis and treatment. Adv. Mater. 35, 2212190 (2023).10.1002/adma.202212190 ↗
20. Kireev, D. et al. Fabrication, characterization and applications of graphene electronic tattoos. Nat. Protoc. 16, 2395–2417 (2021).10.1038/s41596-020-00489-8 ↗
21. Guo, Y. et al. Wearable thermoelectric devices based on Au-decorated two-dimensional MoS2. ACS Appl. Mater. Interfaces 10, 33316–33321 (2018).10.1021/acsami.8b10720 ↗
22. Chhetry, A. et al. Black phosphorus@laser-engraved graphene heterostructure-based temperature–strain hybridized sensor for electronic-skin applications. Adv. Funct. Mater. 31, 2007661 (2021).10.1002/adfm.202007661 ↗
23. Kovalska, E., Baldycheva, A. & Somov, A. Wireless graphene-enabled wearable temperature sensor. J. Phys. Conf. Ser. 1571, 012001 (2020).10.1088/1742-6596/1571/1/012001 ↗
24. Rajan, G. et al. Low operating voltage carbon–graphene hybrid e-textile for temperature sensing. ACS Appl. Mater. Interfaces 12, 29861–29867 (2020).10.1021/acsami.0c08397 ↗
25. Huo, Z., Wei, Y., Wang, Y., Wang, Z. L. & Sun, Q. Integrated self-powered sensors based on 2D material devices. Adv. Funct. Mater. 32, 2206900 (2022).10.1002/adfm.202206900 ↗
26. Kovalska, E. et al. Textile beeswax triboelectric nanogenerator as self-powered sound detectors and mechano-acoustic energy harvesters. Nano Energy 120, 109109 (2024).10.1016/j.nanoen.2023.109109 ↗
27. Sadanandan, K. S. et al. Fabric-based triboelectric nanogenerators with ultrasonic spray coated graphene electrodes. Nano Energy 116, 108797 (2023).10.1016/j.nanoen.2023.108797 ↗
28. Mahapatra et al. Textile-integrated MoS2-PDMS single electrode triboelectric nanogenerator for vibrational energy harvesting and biomechanical motion sensing. Nano Energy 116, 108829 (2023).10.1016/j.nanoen.2023.108829 ↗
29. Ali, I., Karim, N. & Afroj, S. Textile-based triboelectric nanogenerators integrated with 2D materials. EcoMat 6, e12471 (2024).10.1002/eom2.12471 ↗
30. Zhang, H. et al. MoS2-based charge trapping layer enabled triboelectric nanogenerator with assistance of CNN-GRU model for intelligent perception. Nano Energy 127, 109753 (2024).10.1016/j.nanoen.2024.109753 ↗
31. Huang, Y. et al. Highly flexible fabric strain sensor based on graphene nanoplatelet–polyaniline nanocomposites for human gesture recognition. J. Appl. Polym. Sci. 134, 45340 (2017).10.1002/app.45340 ↗
32. Chekke, T. et al. 2D WS2 based single electrode triboelectric nanogenerator for power generation and motion sensing. J. Electron. Mater. 52, 2685–2694 (2023).10.1007/s11664-023-10231-1 ↗
33. Chekke, T. et al. Cotton based self powered temperature sensor based on Au augmented WS2 triboelectric nanogenerator. J. Electron. Mater. 53, 238–249 (2024).10.1007/s11664-023-10774-3 ↗
34. Veeralingam, S. & Badhulika, S. Ti@MoS2 incorporated Polypropylene/Nylon fabric-based porous, breathable triboelectric nanogenerator as respiration sensor and ammonia gas sensor applications. Sens. Actuators B Chem. 380, 133346 (2023).10.1016/j.snb.2023.133346 ↗
35. Fan, B. et al. Robust flexible textile tribovoltaic nanogenerator via a 2D 2H-MoS2/Ta4C3 dynamic heterojunction. Adv. Funct. Mater. 33, 2301821 (2023).10.1002/adfm.202301821 ↗
36. Kenaz, R. R. et al. Thickness mapping and layer number identification of exfoliated van der Waals materials by Fourier imaging micro-ellipsometry. ACS Nano 17, 9188–9196 (2023).10.1021/acsnano.2c12773 ↗
37. Zhang, H.-X., Shin, B.-G., Lee, D.-E. & Yoon, K.-B. Preparation of PP/2D-nanosheet composites using MoS2/MgCl2- and BN/MgCl2-bisupported Ziegler–Natta catalysts. Catalysts 10, 596 (2020).10.3390/catal10060596 ↗
38. Huang, P., Wang, Z., Liu, Y., Zhang, K. & Yuan, L. Water-soluble 2D transition metal dichalcogenides as the hole-transport layer for highly efficient and stable p–i–n perovskite solar cells. ACS Appl. Mater. Interfaces 9, 25323–25331 (2017).10.1021/acsami.7b06403 ↗
39. Coogan, A. & Gun’ko, Y. K. Solution-based “bottom-up” synthesis of group VI transition metal dichalcogenides and their applications. Mater. Adv. 2, 146–164 (2021).10.1039/D0MA00697A ↗
40. Kovalska, E. et al. NLL-assisted multilayer graphene patterning. ACS Omega 3, 1546–1554 (2018).10.1021/acsomega.7b01853 ↗
41. Cong, X., Liu, X.-L., Lin, M.-L. & Tan, P.-H. Application of Raman spectroscopy to probe fundamental properties of two-dimensional materials. npj 2D Mater. Appl. 4, 1–12 (2020).10.1038/s41699-020-0140-4 ↗
42. Puretzky, A. A., Liang, L., Li, X., Xiao, K. & Wang, K. Low-frequency Raman fingerprints of two-dimensional metal dichalcogenide layer stacking configurations. ACS Nano 9, 6333–6342 (2015).10.1021/acsnano.5b01884 ↗
43. Tonndorf, P., Schmidt, P. R., Böttger, P., Zhang, X. & Börner, J. Photoluminescence emission and Raman response of monolayer MoS2, MoSe2, and WSe2. Opt. Express 21, 4908–4916 (2013).10.1364/OE.21.004908 ↗
44. Albuqami, M. H. et al. Integration of two-dimensional WS2 in flexible textile triboelectric nanogenerators via electronic dyeing for self-powered sensing. Nanoscale 17, 12080–12086 (2025).10.1039/D4NR05209A ↗
45. Bobbitt, N. S., Curry, J. F., Babuska, T. F. & Chandross, M. Water adsorption on MoS2 under realistic atmosphere conditions and impacts on tribology. RSC Adv. 14, 4717–4729 (2024).10.1039/D3RA07984H ↗
46. David, E. & Niculescu, V. C. Volatile organic compounds (VOCs) as environmental pollutants: occurrence and mitigation using nanomaterials. Int. J. Environ. Res. Public Health 18, 13147 (2021).10.3390/ijerph182413147 ↗
47. Pathak, A. K., Swargiary, K., Kongsawang, N., Jitpratak, P. & Ajchareeyasoontorn, N. Recent advances in sensing materials targeting clinical volatile organic compound (VOC) biomarkers: a review. Biosens 13, 114 (2023).10.3390/bios13010114 ↗
48. Kovalska, E., Antonatos, N., Luxa, J. & Sofer, Z. Edge-hydrogenated germanene by electrochemical decalcification-exfoliation of CaGe2: germanene-enabled vapor sensor. ACS Nano 15, 16709–16718 (2021).10.1021/acsnano.1c06675 ↗
49. Kovalska, E. et al. Single-step synthesis of platinoid-decorated phosphorene: perspectives for catalysis, gas sensing, and energy storage. ACS Appl. Mater. Interfaces 12, 50516–50526 (2020).10.1021/acsami.0c15525 ↗
50. Tisch, U. et al. Detection of asymptomatic nigrostriatal dopaminergic lesion in rats by exhaled air analysis using carbon nanotube sensors. ACS Chem. Neurosci. 3, 161–166 (2012).10.1021/cn200093r ↗
51. Zheng, J. et al. Indoor VOCs exposure induced Parkinson-like behaviors through autophagy dysfunction and NLRP3 inflammasome-mediated neuroinflammation. J. Hazard. Mater. 440, 129818 (2022).10.1016/j.jhazmat.2022.129818 ↗
52. Tisch, U. et al. Detection of Alzheimer’s and Parkinson’s disease from exhaled breath using nanomaterial-based sensors. Nanomedicine 8, 43–56 (2013).10.2217/nnm.12.105 ↗
53. Zhang, Z., Liu, L., Zhang, T. & Tang, H. Efficient Eu3+-Integrated UiO-66 Probe for Ratiometric Fluorescence Sensing of Styrene and Cyclohexanone. ACS Appl. Mater. Interfaces 15, 18982–18991 (2023).10.1021/acsami.3c01204 ↗
54. Hu, Z. & Yan, B. A luminescent Eu@SOF film fabricated by electrophoretic deposition as ultrasensitive platform for styrene gas quantitative monitoring through fluorescence sensing and ANNs model. J. Hazard. Mater. 441, 129865 (2023).10.1016/j.jhazmat.2022.129865 ↗
55. Kałuża, D. et al. Polythiophene-based fluorimetric insight into minute styrene concentration in solution and gas phase. Opt. Mater. 123, 111848 (2022).10.1016/j.optmat.2021.111848 ↗
56. Kaluza, D. et al. Styrene detection in water by polythiophene nanoparticles suspension. ECS Meet. Abstr. 2388, MA2020–01 (2020).
57. Radica, F. et al. Real-time quantitative detection of styrene in atmosphere in presence of other volatile-organic compounds using a portable device. Talanta 233, 122510 (2021).10.1016/j.talanta.2021.122510 ↗
58. Daus, A. et al. Fast-response flexible temperature sensors with atomically thin molybdenum disulfide. Nano Lett. 22, 6135–6140 (2022).10.1021/acs.nanolett.2c01344 ↗
59. Li, W. et al. Large-scale ultra-robust MoS2 patterns directly synthesized on polymer substrate for flexible sensing electronics. Adv. Mater. 35, 2207447 (2023).10.1002/adma.202207447 ↗
60. Lu, C. X. et al. Temperature effect on performance of triboelectric nanogenerator. Adv. Eng. Mater. 19, 1700275 (2017).10.1002/adem.201700275 ↗
61. Pan, C. et al. Influence of temperature on the characteristics of surface charge accumulation on PTFE model insulators. In Proc. IEEE Transactions on Dielectrics and Electrical Insulation 1210–1219 (2017).10.1109/TDEI.2017.006070 ↗
62. Yu, T. C., Wang, N., Ellenbogen, S. & Kao, C. H. L. Skinergy: machine-embroidered silicone-textile composites as on-skin self-powered input sensors. In Proc. 36th Annual ACM Symp. User Interface Software Technology, 1–15 (Association for Computing Machinery, 2023).10.1145/3586183.3606729 ↗
63. Babiuch, M., Foltýnek, P. & Smutný, P. Using the ESP32 microcontroller for data processing. In Proc. 20th International Carpathian Control Conference (ICCC), 1–6 (IEEE, 2019).10.1109/CarpathianCC.2019.8765944 ↗
64. Yuan, X., Zheng, W., Zhu, B., Wang, B. & Chen, Y. Study on the electrical insulation properties of modified PTFE at high temperatures. Polymers 16, 316 (2024).10.3390/polym16030316 ↗
65. Cherenack, K., Zysset, C., Kinkeldei, T., Münzenrieder, N. & Tröster, G. Woven electronic fibers with sensing and display functions for smart textiles. Adv. Mater. 22, 5178–5182 (2010).10.1002/adma.201002159 ↗