A capacitor with sufficient capacity can be prepared without increasing the step between the memory cell portion and surrounding area to the extent that photolithography becomes difficult. The probe covers can be individually attached over a probe of a tympanic thermometer to protect the probe from contamination. Since at least one groove portion is disposed in the surface of each of the inner lead portions, the anchoring effect to the sealing resin, stress acting on a lead portion of a product, and stress to the thin metal wires can be relaxed, and leads and the thin metal wires can be prevented from peeling off. Moreover, the sampler surface may be increasingly less hydrophobic along a radial direction toward the center of the sampler surface, thereby creating an axisymmetric wettability gradient. In addition to the foregoing, other related methodsystem aspects are described in the claims, drawings, and text forming a part of the present disclosure.