A Flexible Terahertz Metamaterial Sensor for Pesticide Sensing and Detection

材料科学 太赫兹辐射 超材料 光电子学 纳米技术
作者
Dongxu Wang,Siyuan Luo,Kai‐Da Xu
出处
期刊:ACS Applied Materials & Interfaces [American Chemical Society]
卷期号:16 (21): 27969-27978 被引量:2
标识
DOI:10.1021/acsami.4c04503
摘要

Terahertz (THz) waves have garnered significant interest across various fields, particularly in high-sensitivity sensing applications. Metamaterials can be employed in THz sensors, specifically for refractive index sensing and pesticide detection due to their high-sensitivity characteristics. In this Article, a dual-band flexible THz metamaterial sensor based on polyimide is proposed for refractive index and pesticide sensing, which is fabricated using ultraviolet (UV) lithography technology and measured by a THz time-domain spectroscope (TDS) system. The resonant frequencies of the sensor are at 0.37 and 1.13 THz, with transmission rates of 2.9% and 0.3%, respectively. With an analyte layer attached to the sensor's surface, the sensitivity of refractive index sensing can be calculated as 0.09 and 0.28 THz/RIU (refractive index unit) at the two resonant frequencies. In order to validate the exceptional pesticide sensing performance of the sensor, chlorpyrifos-methyl acetone solutions with various concentrations are added on it. Furthermore, a monolayer of graphene is coated on the sensor's surface, which is proved capable of improving pesticide sensing sensitivity at low concentrations due to strong π–π stacking interactions with π-electrons in chlorpyrifos-methyl solutions. Therefore, the graphene-coated sensor can be utilized in detecting pesticide solutions with low concentrations, and the sensor without graphene is preferred for high concentration detection. This work provides a novel option for the THz metamaterial sensor with high sensitivity covering a wide pesticide concentration range.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
情怀应助YaHe采纳,获得10
1秒前
zxymn发布了新的文献求助10
1秒前
面面完成签到,获得积分10
1秒前
晨曦完成签到,获得积分10
2秒前
3秒前
忧郁平文发布了新的文献求助10
3秒前
mei发布了新的文献求助10
3秒前
mysticwang完成签到,获得积分10
4秒前
yuaaaann发布了新的文献求助10
4秒前
大模型应助Honey采纳,获得10
5秒前
明理的小蜜蜂完成签到 ,获得积分10
5秒前
6秒前
7秒前
zyyin完成签到,获得积分10
8秒前
小桃发布了新的文献求助10
8秒前
affff完成签到 ,获得积分10
11秒前
11秒前
pipi发布了新的文献求助10
12秒前
13秒前
14秒前
su发布了新的文献求助10
14秒前
15秒前
15秒前
科研通AI2S应助mei采纳,获得10
15秒前
16秒前
LIhao完成签到,获得积分10
17秒前
zzz完成签到,获得积分10
17秒前
keikeizi完成签到,获得积分10
18秒前
19秒前
Hello应助pipi采纳,获得10
19秒前
格子发布了新的文献求助10
20秒前
20秒前
tttttqqq完成签到,获得积分10
21秒前
负责小蜜蜂完成签到,获得积分10
23秒前
ss完成签到,获得积分10
23秒前
23秒前
dark发布了新的文献求助30
24秒前
研友_VZG7GZ应助tjz采纳,获得10
24秒前
贺小刚发布了新的文献求助10
24秒前
高分求助中
Evolution 10000
Sustainability in Tides Chemistry 2800
The Young builders of New china : the visit of the delegation of the WFDY to the Chinese People's Republic 1000
юрские динозавры восточного забайкалья 800
English Wealden Fossils 700
Foreign Policy of the French Second Empire: A Bibliography 500
Chen Hansheng: China’s Last Romantic Revolutionary 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3146272
求助须知:如何正确求助?哪些是违规求助? 2797641
关于积分的说明 7825012
捐赠科研通 2454032
什么是DOI,文献DOI怎么找? 1305957
科研通“疑难数据库(出版商)”最低求助积分说明 627630
版权声明 601503