Microsensors for Sediments, Microbial Mats, and Biofilms. Figure 1
From: Microsensors for Sediments, Microbial Mats, and Biofilms
Left panel, microsensors for oxygen (left sensor), for pH (middle), and for H2S (right sensor). The right panel zooms further in on the tip of an oxygen sensor, showing the gold-plated electrode behind a silicon membrane, the ticks on the ruler are 1 μµm.