A deposition method includes contacting a substrate with a first initiation precursor and forming a first portion of an initiation layer on the substrate. The use of a spherical lens in an optical immersion probe confers many advantages over traditional immersion probes including ease of use and accuracy of focus. The invention improvements also include a novel portable electronic device, such as a cell phone, holder positioned on the front panel of the overalls for easy and convenient access to the phone in a compartment that retains the phone during bending and quick movements by the user.