Abstract
Bioinspired superwettable micropatterns that combine superhydrophobicity and superhydrophilicity have been proved to exhibit outstanding capacity in controlling and patterning microdroplets and possessed new functionalities and possibilities in emerging sensing applications. Here, we introduce a flexible tape-based superhydrophilic-superhydrophobic tape toward on-site heavy metals monitoring. On such a superwettable tape, capillarity-assisted superhydrophilic microwells allow directly anchoring indicators in fixed locations and sampling into a test zone via simple dip-pull from an origin specimen solution. In contrast, the superhydrophobic substrate could confine the microdroplets in the superhydrophilic microwells for reducing the amount of analytical solution. The tape-based microchip also displays excellent flexibility against stretching, bending, and torquing for expanding wearable and portable sensing devices. Qualitative and quantitative colorimetric assessments of multiplex heavy metal analyses (chromium, copper, and nickel) by the naked eye are also achieved. The superwettable tape-based platforms with a facile operation mode and accessible signal read-out represent unrevealed potential for on-site environmental monitoring.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 14105-14110 |
| Number of pages | 6 |
| Journal | Analytical Chemistry |
| Volume | 90 |
| Issue number | 24 |
| DOIs | |
| State | Published - Dec 18 2018 |
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ASJC Scopus subject areas
- Analytical Chemistry
Cite this
Flexible Superwettable Tapes for On-Site Detection of Heavy Metals. / He, Xuecheng; Xu, Tailin; Gao, Wei; Xu, Li Ping; Pan, Tingrui; Zhang, Xueji.
In: Analytical Chemistry, Vol. 90, No. 24, 18.12.2018, p. 14105-14110.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Flexible Superwettable Tapes for On-Site Detection of Heavy Metals
AU - He, Xuecheng
AU - Xu, Tailin
AU - Gao, Wei
AU - Xu, Li Ping
AU - Pan, Tingrui
AU - Zhang, Xueji
PY - 2018/12/18
Y1 - 2018/12/18
N2 - Bioinspired superwettable micropatterns that combine superhydrophobicity and superhydrophilicity have been proved to exhibit outstanding capacity in controlling and patterning microdroplets and possessed new functionalities and possibilities in emerging sensing applications. Here, we introduce a flexible tape-based superhydrophilic-superhydrophobic tape toward on-site heavy metals monitoring. On such a superwettable tape, capillarity-assisted superhydrophilic microwells allow directly anchoring indicators in fixed locations and sampling into a test zone via simple dip-pull from an origin specimen solution. In contrast, the superhydrophobic substrate could confine the microdroplets in the superhydrophilic microwells for reducing the amount of analytical solution. The tape-based microchip also displays excellent flexibility against stretching, bending, and torquing for expanding wearable and portable sensing devices. Qualitative and quantitative colorimetric assessments of multiplex heavy metal analyses (chromium, copper, and nickel) by the naked eye are also achieved. The superwettable tape-based platforms with a facile operation mode and accessible signal read-out represent unrevealed potential for on-site environmental monitoring.
AB - Bioinspired superwettable micropatterns that combine superhydrophobicity and superhydrophilicity have been proved to exhibit outstanding capacity in controlling and patterning microdroplets and possessed new functionalities and possibilities in emerging sensing applications. Here, we introduce a flexible tape-based superhydrophilic-superhydrophobic tape toward on-site heavy metals monitoring. On such a superwettable tape, capillarity-assisted superhydrophilic microwells allow directly anchoring indicators in fixed locations and sampling into a test zone via simple dip-pull from an origin specimen solution. In contrast, the superhydrophobic substrate could confine the microdroplets in the superhydrophilic microwells for reducing the amount of analytical solution. The tape-based microchip also displays excellent flexibility against stretching, bending, and torquing for expanding wearable and portable sensing devices. Qualitative and quantitative colorimetric assessments of multiplex heavy metal analyses (chromium, copper, and nickel) by the naked eye are also achieved. The superwettable tape-based platforms with a facile operation mode and accessible signal read-out represent unrevealed potential for on-site environmental monitoring.
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UR - http://www.scopus.com/inward/citedby.url?scp=85058758404&partnerID=8YFLogxK
U2 - 10.1021/acs.analchem.8b04536
DO - 10.1021/acs.analchem.8b04536
M3 - Article
C2 - 30411879
AN - SCOPUS:85058758404
VL - 90
SP - 14105
EP - 14110
JO - Analytical Chemistry
JF - Analytical Chemistry
SN - 0003-2700
IS - 24
ER -