| abstract |
[Object] To suppress damage to an adherend, to control a gap with high accuracy, and to allow various particles using substrate particles to contact the adherend satisfactorily with respect to various adherends. Substrate particles are provided. A base particles according to the present invention is a polymer of a polymerizable compound, the compression modulus of when compressed 10%, 2500N / mm 2 or more and 4000 N / mm 2 or less, compression 30% The compression elastic modulus is 1000 N / mm 2 or more and 2000 N / mm 2 or less, and the ratio of the compression elastic modulus when compressed by 10% to the compressive elastic modulus when compressed by 30% is 2.0 or more. is there. [Selection] Figure 1 |