Abstract
A novel inductance-based sensing technique is presented for remote query measurement in different liquid media including organic solvents and inorganic solutions. The inorganic solutions tested included salt solutions of different concentrations, and the organic solvents detected included 1,4-dioxane and tetrahydrofuran. To extend the application of the sensor, bacterial culture media were also detected, and the growth of Escherichia coli (E. coli) was controlled. The influential factors which may affect the inductance responses were studied in detail. It was found that quantitative relationships exist between the sensor’s inductance response and the physico-chemical parameters of the liquid media. The sensor’s inductance response (L) decreases with the increase of salt concentration (C) and its ionic valence (e) according to a semi-logarithmic equation LgL = −aeC + b, where a and b are constants, which is in accordance with the theoretically deduced equation. The inductance variation rate (ΔK) increases directly with the temperature (T): ΔK = a′ T + b′. As for organic solutions, the sensor’s inductance was found to increase with the increasing permittivity of the organic solution. The wireless sensor we designed is simple and easy to manipulate. It has the potential for remote determination of not only chemical substances but also microbiological species such as bacteria. Using the newly developed inductance-based sensor, the pathogenic E. coli was monitored with a limit of detection of 10 cells/mL and a linear semi-logarithmic range of 1.0 × 101 to 2.5 × 109 cells/mL.
Similar content being viewed by others
References
Kellner R, Mermet JM, Otto M, Widmer HM. Analytical Chemistry. Wiley-VCH, 1998
Jensen FW, Parrack AL. Using of high-frequency oscillators in titration and analyses. Ind Eng Chem Anal, 1946, 18: 595
Newman AL, Hunter KW, Stanbro WD. The capacitive affinity sensors, a new biosensor, Proceedings of the 2nd meeting on Chemical Sensors, Bordeaux. 1986, 596–598
Decker W, Kostka P, Gopel W, Hesse J, Zemel JN. Inductive and eddy current sensors. Sensors, 1989, 5: 300–304
Kejik P, Kluser C, Bischofberger R, Popovic RS. A low-cost inductive proximity sensor for industrial applications. Sens Actuators A, 2004, 110: 93–97
Passeraub Ph A, Rey-Mennet G, Besse PA, Popovic RS. Inductive proximity sensor with a flat coil and a new differential relaxation oscillator. Sens Actuators A, 1997, 60: 122–126
Das-Gupta DK, Scarpa PCN. Modeling of dielectric relaxation spectra of polymers in the condensed phase. IEEE Electr Insul, 1999, 15: 23–32
Ong KG, Wang J, Bachas LG, Grimes CA. Monitoring of bacteria growth using a wireless remote query resonant-circuit sensor: application to environmental sensing. Biosens Bioelectron, 2001, 16: 305–312
Puers R. Sensor and sensor systems for in vivo monitoring. SICEICASE International Joint Conference, 2006, 6–13
Peter C, Manoli Y. Inductance calculation of planar multi-layer and multi-wire coils: An analytical approach. Sens Actuator A, 2008, 145-146: 394–404
Neagu CR, Jansen HV, Smith A, Gardeniers JGE, Elwenspoek MC. Characterization of a planar microcoil for implantable microsystems. Sens Actuator A, 1997, 62: 599–611
Harpster TJ. A passive wireless integrated humidity sensor. Sens and Actuator A, 2001, 95: 100–107
Xiao XL, Guo ML, Li QX, Cai QY, Yao SZ, Grimes CA. In-situ monitoring of breast cancer cell (MCF-7) growth and quantification of the cytotoxicity of anticancer drugs fluorouracil and cisplatin. Biosens Bioelectron, 2008, 24: 247–252
Huang SJ, Ge ST, He LW, Cai QY, Grimes CA. A remote-query sensor for predictive indication of milk spoilage. Biosens Bioelectron, 2008, 23: 1745–1748
Lu QZ, Lin HL, Ge ST, Luo SL, Cai QY, Grimes CA. Wireless, remote-query, and high sensitivity Escherichia coli O157:H7 biosensor based on the recognition action of concanavalin A. Anal Chem, 2009, 81: 5846–5850
Kimmel PD, haliday D, Resniok R. Fundamentals of Physics. John Wiley and Son, 2007
Ronald, Lane, Reese. University Physics. Brooks/Cole Pub Co., 1999
Marion JB, Hornyak WF. Study Guide to Accompany Physics for Science and Engineering. CBS College Co., 1984
He FJ, Geng Q, Zhu WH, Nie LH, Yao SZ. Rapid detection of Escherichia coli using a separated electrode piezoelectric crystal sensor. Anal Chim Acta, 1994, 289: 313–319
Diaz de Lezana K, Garcia-Arribas A, Barandiaran JM, Gutierrez J. Comparative study of alternative circuit configurations for inductive sensors. Sens Actuators A, 2001, 91: 226–229
Harpster TJ, Stark B, Najafi K. A passive wireless integrated humidity sensor. Sens Actuator A, 2002, 95: 100–107
Author information
Authors and Affiliations
Corresponding authors
Electronic supplementary material
Rights and permissions
About this article
Cite this article
Ma, L., Nie, Z., Huang, Y. et al. Inductance-based sensing technique for wireless, remote-query measurement in liquid media. Sci. China Chem. 53, 1391–1397 (2010). https://doi.org/10.1007/s11426-010-3196-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11426-010-3196-8