Very low dielectric constant, so low capacitance for a given size[1]. It also seema these devices are more 2D than 3D so surface area matters more than volume[

Very low dielectric constant, so low capacitance for a given size[1]. It also seema these devices are more 2D than 3D so surface area matters more than volume[2]. [1]: https://blog.knowlescapacitors.com/blog/capacitor-fundamentals-part-8-dielectric-classifications https://blog.knowlescapacitors.com/blog/capacitor-fundamenta... [2]: https://pubs.acs.org/doi/10.1021/acsomega.2c07549 https://pubs.acs.org/doi/10.1021/acsomega.2c07549