Dielectrophoretic Assembly of Gold Nanoparticle Arrays Evaluated in Terms of Room-Temperature Resistance

Nonlinear signal conversion in gold nanoparticle random array for physical reservoir applications

“…It should be also noted that we did not coat the surface of GNPs by SAM in this work, since we did not find successful DEP conditions for SAMcoated GNPs, and since we had often observed SE effects in random arrays of non-SAM-coated GNPs. 11,12,22,23,25) We speculated that contamination on GNPs or a vacuum between GNPs could work as a potential barrier for SE tunneling.…”

“…[14][15][16][17][18][19][20][21] We have succeeded in fabricating SE devices using DEP, and have found that a wide variety of GNP arrays are realized under nearly the same DEP conditions. 22,23) To enhance fabrication yields using DEP, we have recently introduced a DEP automatic stop system where a microcontroller detects the impedance drop between electrodes and stops applying the AC voltage for DEP. 24,25) It is interesting that a random array of GNPs performs not only a single function but also various functions by tuning the gate voltages.…”

Physical reservoir application of random network of gold nanoparticles fabricated by multi-step immersion in gold colloidal solution

“…[19][20][21] In our several works conducted previously, we employed DEP to assemble GNPs in a nanogap. [22][23][24] The RN-GNPs applied for the programmable logic cell 10) and our previous physical reservoir 11) were also fabricated using DEP. Although there are many reports of fabrication success, it should be noted that samples fabricated using DEP under nearly identical conditions exhibit various morphology and electric characteristics.…”

“…Although there are many reports of fabrication success, it should be noted that samples fabricated using DEP under nearly identical conditions exhibit various morphology and electric characteristics. 23) In addition, excess currents during DEP sometimes break assembled GNP arrays.…”