Percolating network of ultrathin gold nanowires and silver nanowires toward “invisible” wearable sensors for detecting emotional expression and apexcardiogram

My Duyen Ho, Yunzhi Ling, Lim Wei Yap, Yan Wang, Dashen Dong, Yunmeng Zhao, Wenlong Cheng

Research output: Contribution to journalArticleResearchpeer-review

Abstract

2 nm thin gold nanowires (AuNWs) have extremely high aspect ratio (≈10 000) and are nanoscale soft building blocks; this is different from conventional silver nanowires (AgNWs), which are more rigid. Here, highly sensitive, stretchable, patchable, and transparent strain sensors are fabricated based on the hybrid films of soft/hard networks. They are mechanically stretchable, optically transparent, and electrically conductive and are fabricatedusing a simple and cost-effective solution process. The combination of soft and more rigid nanowires enables their use as high-performance strain sensors with the maximum gauge factor (GF) of ≈236 at low strain (<5%), the highest stretchability of up to 70% strain, and the optical transparency is from 58.7% to 66.7% depending on the amount of the AuNW component. The sensors can detect strain as low as 0.05% and are energy efficient to operate at a voltage as low as 0.1 V. These attributes are difficult to achieve with a single component of either AuNWs or AgNWs. The outstanding sensing performance indicates their potential applications as “invisible” wearable sensors for biometric information collection, as demonstrated in applications for detecting facial expressions, respiration, and apexcardiogram.
Original languageEnglish
Article number1700845
Number of pages9
JournalAdvanced Functional Materials
Volume27
DOIs
Publication statusPublished - 2017

Keywords

  • Apexcardiogram
  • Gold nanowires
  • Silver nanowires
  • Stretchable sensors
  • Strain sensors

Cite this

@article{c77926b8ed5f4dc385cd71d04384cda7,
title = "Percolating network of ultrathin gold nanowires and silver nanowires toward “invisible” wearable sensors for detecting emotional expression and apexcardiogram",
abstract = "2 nm thin gold nanowires (AuNWs) have extremely high aspect ratio (≈10 000) and are nanoscale soft building blocks; this is different from conventional silver nanowires (AgNWs), which are more rigid. Here, highly sensitive, stretchable, patchable, and transparent strain sensors are fabricated based on the hybrid films of soft/hard networks. They are mechanically stretchable, optically transparent, and electrically conductive and are fabricatedusing a simple and cost-effective solution process. The combination of soft and more rigid nanowires enables their use as high-performance strain sensors with the maximum gauge factor (GF) of ≈236 at low strain (<5{\%}), the highest stretchability of up to 70{\%} strain, and the optical transparency is from 58.7{\%} to 66.7{\%} depending on the amount of the AuNW component. The sensors can detect strain as low as 0.05{\%} and are energy efficient to operate at a voltage as low as 0.1 V. These attributes are difficult to achieve with a single component of either AuNWs or AgNWs. The outstanding sensing performance indicates their potential applications as “invisible” wearable sensors for biometric information collection, as demonstrated in applications for detecting facial expressions, respiration, and apexcardiogram.",
keywords = "Apexcardiogram, Gold nanowires, Silver nanowires, Stretchable sensors, Strain sensors",
author = "Ho, {My Duyen} and Yunzhi Ling and Yap, {Lim Wei} and Yan Wang and Dashen Dong and Yunmeng Zhao and Wenlong Cheng",
year = "2017",
doi = "10.1002/adfm.201700845",
language = "English",
volume = "27",
journal = "Advanced Functional Materials",
issn = "1616-301X",
publisher = "Wiley-VCH Verlag GmbH & Co. KGaA",

}

Percolating network of ultrathin gold nanowires and silver nanowires toward “invisible” wearable sensors for detecting emotional expression and apexcardiogram. / Ho, My Duyen; Ling, Yunzhi; Yap, Lim Wei; Wang, Yan; Dong, Dashen; Zhao, Yunmeng; Cheng, Wenlong.

In: Advanced Functional Materials, Vol. 27, 1700845, 2017.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Percolating network of ultrathin gold nanowires and silver nanowires toward “invisible” wearable sensors for detecting emotional expression and apexcardiogram

AU - Ho, My Duyen

AU - Ling, Yunzhi

AU - Yap, Lim Wei

AU - Wang, Yan

AU - Dong, Dashen

AU - Zhao, Yunmeng

AU - Cheng, Wenlong

PY - 2017

Y1 - 2017

N2 - 2 nm thin gold nanowires (AuNWs) have extremely high aspect ratio (≈10 000) and are nanoscale soft building blocks; this is different from conventional silver nanowires (AgNWs), which are more rigid. Here, highly sensitive, stretchable, patchable, and transparent strain sensors are fabricated based on the hybrid films of soft/hard networks. They are mechanically stretchable, optically transparent, and electrically conductive and are fabricatedusing a simple and cost-effective solution process. The combination of soft and more rigid nanowires enables their use as high-performance strain sensors with the maximum gauge factor (GF) of ≈236 at low strain (<5%), the highest stretchability of up to 70% strain, and the optical transparency is from 58.7% to 66.7% depending on the amount of the AuNW component. The sensors can detect strain as low as 0.05% and are energy efficient to operate at a voltage as low as 0.1 V. These attributes are difficult to achieve with a single component of either AuNWs or AgNWs. The outstanding sensing performance indicates their potential applications as “invisible” wearable sensors for biometric information collection, as demonstrated in applications for detecting facial expressions, respiration, and apexcardiogram.

AB - 2 nm thin gold nanowires (AuNWs) have extremely high aspect ratio (≈10 000) and are nanoscale soft building blocks; this is different from conventional silver nanowires (AgNWs), which are more rigid. Here, highly sensitive, stretchable, patchable, and transparent strain sensors are fabricated based on the hybrid films of soft/hard networks. They are mechanically stretchable, optically transparent, and electrically conductive and are fabricatedusing a simple and cost-effective solution process. The combination of soft and more rigid nanowires enables their use as high-performance strain sensors with the maximum gauge factor (GF) of ≈236 at low strain (<5%), the highest stretchability of up to 70% strain, and the optical transparency is from 58.7% to 66.7% depending on the amount of the AuNW component. The sensors can detect strain as low as 0.05% and are energy efficient to operate at a voltage as low as 0.1 V. These attributes are difficult to achieve with a single component of either AuNWs or AgNWs. The outstanding sensing performance indicates their potential applications as “invisible” wearable sensors for biometric information collection, as demonstrated in applications for detecting facial expressions, respiration, and apexcardiogram.

KW - Apexcardiogram

KW - Gold nanowires

KW - Silver nanowires

KW - Stretchable sensors

KW - Strain sensors

UR - http://www.scopus.com/inward/record.url?scp=85018735456&partnerID=8YFLogxK

U2 - 10.1002/adfm.201700845

DO - 10.1002/adfm.201700845

M3 - Article

VL - 27

JO - Advanced Functional Materials

JF - Advanced Functional Materials

SN - 1616-301X

M1 - 1700845

ER -