| 摘要 |
<p>A wafer (1) comprising an array of channels (2), from which wafer (1) a p lurality of optical cells (4) can be produced, each having a channel (2) wit h an opening into which a sample fluid can be fed, which optical cells (4) a re suitable for use in optical analysis employing one or more wavelengths of electromagnetic radiation (EMR), and which comprise a material that is at l east partially transparent to the EMR employed in the optical analysis, whic h channels (2) are disposed within each cell such that a sample fluid can be fed therein, and can be irradiated with EMR directed through the at least p artially transparent material, characterised by the wafer (1) and optical ce lls (4) having an inner layer and one or more outer layers, the inner layer (8) comprising the channels (2) of the optical cells (4), and one of the out er layers (a, 10) comprising a reflecting surface (27), such that when an op tical cell is in use, EMR transmitted through sample fluid (22) in the chann el (2) is reflected back through the sample fluid (22).</p> |
