This paper proposes a micromachined pyrolyzed polymer as a candidate for an
18F
- deposition electrode for application in positron emission tomography (PET). The electrical separation of
18F from H
218O water has been studied for preparing a PET probe. Conventionally, a bulk material such as glassy carbon (GC) is used for the
18F deposition and recovery cell electrode. This study is the first trial using a pyrolyzed polymer as an
18F
- deposition and recovery cell electrode. A pyrolyzed polymer electrode is obtained through pyrolysis of batch fabricated polymer patterns while the GC electrode is provided as the bulk material. Pyrolyzed polymer prepared below 1000°C pyrolysis shows similar electrical conductivity as that of GC. Further comparisons between pyrolyzed polymer and GC using Raman spectroscopy and transmission electron microscopy (TEM) were carried out prior to determining the suitability of the material as
18F
- deposition and recovery electrode. The deposition and recovery yield of the pyrolyzed polymer electrode derived from the photoresist (AZ4620) at 1000°C was estimated to be 77% and 38%, respectively.
View full abstract