hello! is there a material or substance that can be detected using some kind of waves (magnetic, electromagnetic, ultrasound, infrared, whatever, etc) with extreme specificity (ie. no other materials or substances are to be mistaken) with extreme sensitivity (ie. a nanometer of that material or substance can be distinguished from two nanometers) and where the waves that detect it can penetrate most materials and detect the material or substance we are talking about beneath most materials regardless of the thickness is there any 'material/substance and waves' couple that satisfies these conditions? thanks!