Simple method to measure rheological properties of soft surfaces by a micro-needle contactTadashi Kajiya, Daisuke Sawai, Koji Miyata, Yosuke Miyashita and Hiroyuki NodaEur. Phys. J. E, 45 9 (2022) 76DOI: https://doi.org/10.1140/epje/s10189-022-00227-w