Optical readout of moisture in sand employing bipolar electrochemistry

Bhavana Gupta; Paweł Suchomski; Ambrose Ashwin Melvin; Steven Linfield; Marcin Opallo; Wojciech Nogala

doi:10.1016/j.elecom.2022.107329

Optical readout of moisture in sand employing bipolar electrochemistry

Bhavana Gupta
, Paweł Suchomski
, Ambrose Ashwin Melvin
, Steven Linfield
, Marcin Opallo
, Wojciech Nogala

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The fast and wireless estimation of moisture in sand and other bulk materials usually requires high-tech instrumentation and computation. To overcome the complexity of such systems, we have employed bipolar electrochemistry as a fast, straightforward, and cost-effective method to wirelessly produce an optical signal. An electric field generated across moist sand is used to polarize an immersed light-emitting diode (LED), triggering an electrochemical reaction and causing a current to flow. Therefore, the bipolar activation of the LED by a threshold electric field creates an optically readable moisture sensor. The light emission intensity depends on two factors: the amount of moisture and the salt concentration. As two stimuli control the light emission, the signal can be considered as an AND logic gate, which is expected to open possibilities in wireless and user-friendly moisture sensors.

Original language	English
Article number	107329
Journal	Electrochemistry Communications
Volume	140
DOIs	https://doi.org/10.1016/j.elecom.2022.107329
State	Published - 1 Jul 2022
Externally published	Yes

Keywords

Bipolar electrochemistry
Optical readout
Sensor
Water electrolysis
Wireless

ASJC Scopus subject areas

Electrochemistry

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10.1016/j.elecom.2022.107329

Cite this

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title = "Optical readout of moisture in sand employing bipolar electrochemistry",

abstract = "The fast and wireless estimation of moisture in sand and other bulk materials usually requires high-tech instrumentation and computation. To overcome the complexity of such systems, we have employed bipolar electrochemistry as a fast, straightforward, and cost-effective method to wirelessly produce an optical signal. An electric field generated across moist sand is used to polarize an immersed light-emitting diode (LED), triggering an electrochemical reaction and causing a current to flow. Therefore, the bipolar activation of the LED by a threshold electric field creates an optically readable moisture sensor. The light emission intensity depends on two factors: the amount of moisture and the salt concentration. As two stimuli control the light emission, the signal can be considered as an AND logic gate, which is expected to open possibilities in wireless and user-friendly moisture sensors.",

keywords = "Bipolar electrochemistry, Optical readout, Sensor, Water electrolysis, Wireless",

author = "Bhavana Gupta and Pawe{\l} Suchomski and \{Ashwin Melvin\}, Ambrose and Steven Linfield and Marcin Opallo and Wojciech Nogala",

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doi = "10.1016/j.elecom.2022.107329",

language = "English",

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TY - JOUR

T1 - Optical readout of moisture in sand employing bipolar electrochemistry

AU - Gupta, Bhavana

AU - Suchomski, Paweł

AU - Ashwin Melvin, Ambrose

AU - Linfield, Steven

AU - Opallo, Marcin

AU - Nogala, Wojciech

PY - 2022/7/1

Y1 - 2022/7/1

N2 - The fast and wireless estimation of moisture in sand and other bulk materials usually requires high-tech instrumentation and computation. To overcome the complexity of such systems, we have employed bipolar electrochemistry as a fast, straightforward, and cost-effective method to wirelessly produce an optical signal. An electric field generated across moist sand is used to polarize an immersed light-emitting diode (LED), triggering an electrochemical reaction and causing a current to flow. Therefore, the bipolar activation of the LED by a threshold electric field creates an optically readable moisture sensor. The light emission intensity depends on two factors: the amount of moisture and the salt concentration. As two stimuli control the light emission, the signal can be considered as an AND logic gate, which is expected to open possibilities in wireless and user-friendly moisture sensors.

AB - The fast and wireless estimation of moisture in sand and other bulk materials usually requires high-tech instrumentation and computation. To overcome the complexity of such systems, we have employed bipolar electrochemistry as a fast, straightforward, and cost-effective method to wirelessly produce an optical signal. An electric field generated across moist sand is used to polarize an immersed light-emitting diode (LED), triggering an electrochemical reaction and causing a current to flow. Therefore, the bipolar activation of the LED by a threshold electric field creates an optically readable moisture sensor. The light emission intensity depends on two factors: the amount of moisture and the salt concentration. As two stimuli control the light emission, the signal can be considered as an AND logic gate, which is expected to open possibilities in wireless and user-friendly moisture sensors.

KW - Bipolar electrochemistry

KW - Optical readout

KW - Sensor

KW - Water electrolysis

KW - Wireless

UR - https://www.scopus.com/pages/publications/85134709979

U2 - 10.1016/j.elecom.2022.107329

DO - 10.1016/j.elecom.2022.107329

M3 - Article

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SN - 1388-2481

VL - 140

JO - Electrochemistry Communications

JF - Electrochemistry Communications

M1 - 107329

ER -

Optical readout of moisture in sand employing bipolar electrochemistry

Abstract

Keywords

ASJC Scopus subject areas

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