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. 2014 Jul 18;14(7):12847–12870. doi: 10.3390/s140712847

Figure 2.

Figure 2.

(a) Array of silicon microneedles. Adapted from [8]; (b) Multiwalled carbon nanotube arrays. Adapted from [11]; (c) Details of a microtip. Adapted from [12]; (d) 3D printed dry millielectrode. Adapted from [16].