PMID- 23899249 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20140501 LR - 20200930 IS - 1530-6992 (Electronic) IS - 1530-6984 (Linking) VI - 13 IP - 8 DP - 2013 Aug 14 TI - Sensing and energy harvesting of fluidic flow by InAs nanowires. PG - 3953-7 LID - 10.1021/nl402185h [doi] AB - Indium arsenide (InAs) nanowire (NW) field effect transistors (FETs) were incorporated into a microfluidic channel to detect the flow rate change as well as to harvest fluid flow energy for electric power generation. Discrete changes in the electric current through InAs NW FETs were observed upon flow rate changes at steps of 1 mL/h (equivalent to ~3 mm/s change in average linear velocity). The current also showed a sign change upon reversing flow direction. By comparing the response of the device with and without a driving voltage between source-drain electrodes, we conclude that the dominant contribution in the response is the streaming potential tuned conductance of NW. In the absence of source-drain voltage, we further demonstrate that the ionic flow could enable generation of an ~mV electrical potential (or ~nA electrical current) inside the InAs NW per mL/h increase of flow rate, most likely due to the charge dragging effect. FAU - Chen, Ying AU - Chen Y AD - Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, United States. FAU - Liang, Dong AU - Liang D FAU - Gao, Xuan P A AU - Gao XP FAU - Alexander, J Iwan D AU - Alexander JI LA - eng PT - Journal Article DEP - 20130805 PL - United States TA - Nano Lett JT - Nano letters JID - 101088070 EDAT- 2013/08/01 06:00 MHDA- 2013/08/01 06:01 CRDT- 2013/08/01 06:00 PHST- 2013/08/01 06:00 [entrez] PHST- 2013/08/01 06:00 [pubmed] PHST- 2013/08/01 06:01 [medline] AID - 10.1021/nl402185h [doi] PST - ppublish SO - Nano Lett. 2013 Aug 14;13(8):3953-7. doi: 10.1021/nl402185h. Epub 2013 Aug 5.