A device for keeping stethoscopes in place when not being used for healthcare personnel. The waveguide assembly includes a core, a cladding portion, and, preferably, at least two waveguide core fiducials, the at least two waveguide core fiducials and the core being lithographically formed substantially simultaneously in a substantially coplanar layer. A fourth semiconductor region of the first conductivity type and a fifth semiconductor region of the second conductivity type are selectively provided on the third semiconductor region. Each frame member includes a support surface, and is in engagement with a respective side surface of the form body. The method is characterized by vaporizing a silane-coupling agent by heating, treating glass members for optical communication with the silane-coupling agent vapor, and bonding the glass members to each other with an adhesive. The rechargeable battery provides an increased energy density and has a prolonged charging and discharging cycle life, in which a dendrite causing a reduction in the battery performance, which is generated upon operating charging in the conventional rechargeable battery, is effectively prevented from generating or from growing in the case where it should be generated.