Chemoresponsive Nanofluidic Pump That Turns Off in the Presence of Lead Ion
- Univ. of Florida, Gainesville, FL (United States). Dept. of Chemistry
There are many applications that require the integration of a pump and a chemical sensor so that the solution being pumped can be analyzed in real time for a specific chemical species and the flow adjusted according to the measured concentration of that species. In this paper, we describe an alternative strategy: a chemoresponsive pump where a single device acts as both the sensor and pump simultaneously. We demonstrate this concept with a nanofluidic Pb2+-responsive pump that uses electroosmotic flow as the pumping technology, and a Pb2+-binding ionophore that allows the device to selectively respond to Pb2+. The pump yields high flow rates at low Pb2+ concentrations (<1 μM), but flow rate decreases with concentrations above this threshold and ultimately goes to zero at concentrations above 100 μM.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Nanostructures for Electrical Energy Storage (NEES)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0001160
- OSTI ID:
- 1470663
- Journal Information:
- Analytical Chemistry, Vol. 90, Issue 12; Related Information: NEES partners with University of Maryland (lead); University of California, Irvine; University of Florida; Los Alamos National Laboratory; Sandia National Laboratories; Yale University; ISSN 0003-2700
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Low‐voltage efficient electroosmotic pumps with ultrathin silica nanoporous membrane
|
journal | March 2019 |
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