Maybe some day! But current materials science doesn’t have anything like that. It’s not usually about physical hole size, but rather electrostatic attraction (i

Maybe some day! But current materials science doesn’t have anything like that. It’s not usually about physical hole size, but rather electrostatic attraction (in the case of HEPA filters) or adsorption (in the case of activated carbon). There’s no “hole” to open to let things drop out. It’s a surface that things are somewhat bonded to.