Silver nanowires for anti-counterfeiting

Wang，Yan1,2; Bai，Ningning1,2; Yang，Junlong2; Liu，Zhiguang2; Li，Gang2; Cai，Minkun2; Zhao，Lingyu2; Zhang，Yuan2; Zhang，Jianming2; Li，Chunhua3; Zhou，Yunlong3; Guo，Chuan Fei2

2020-03-01

10.1016/j.jmat.2020.01.008

Journal of Materiomics   影响因子和分区

2352-8478

2352-8486

Silver nanowire (AgNW) films have been widely used as flexible transparent electrodes due to the high electrical conductance and high transmittance in the visible range. The infrared (IR) properties of AgNW films, however, are seldom discussed. Here, we show that ultrathin AgNWs present high transmittance in the visible range (∼95%) and high reflectance (60–70%) in the IR range of 8–14 μm. Such a significant difference makes AgNW films invisible to naked eyes but visible under an IR camera, being an ideal selection for anti-counterfeit technologies, while no excitation is required. We have demonstrated that AgNW films can be spray-coated on either flat or microstructured surfaces with high conformability and high scratch-resistance, and thus these anti-counterfeiting materials can be applied to a variety of applications. The AgNW-based anti-counterfeiting may be helpful for combating counterfeiting crimes in the fields of medicines, artwork, banknotes, brand luxuries, industrial parts, and so on.

Anti-counterfeiting Conformability Excitation-free Infrared light Silver nanowires

SCI

英语

通讯

Shenzhen Sci-Tech Fund[KYTDPT20181011104007]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000522699200017

ELSEVIER

2-s2.0-85079284754

Scopus

1.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin,150001,China
2.Department of Materials Science & Engineering,Centers for Mechanical Engineering Research and Education at MIT and SUSTech,Southern University of Science and Technology,Shenzhen,518055,China
3.Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province,Wenzhou Institute of Biomaterials and Engineering,University of Chinese Academy of Sciences,Wenzhou,325000,China

Wang，Yan,Bai，Ningning,Yang，Junlong,et al. Silver nanowires for anti-counterfeiting[J]. Journal of Materiomics,2020,6(1):152-157.

Wang，Yan.,Bai，Ningning.,Yang，Junlong.,Liu，Zhiguang.,Li，Gang.,...&Guo，Chuan Fei.(2020).Silver nanowires for anti-counterfeiting.Journal of Materiomics,6(1),152-157.

Wang，Yan,et al."Silver nanowires for anti-counterfeiting".Journal of Materiomics 6.1(2020):152-157.