A compact, low-cost and high sensitive LIF based on pinhole metal-capillary and direct laser-diode excitation - Details

author：

Indexed by：

Abstract：

For　laser-induced　fluorescence　(LIF),　the　SNR　and　related　concentration　detectability　was　severely　limited　by　background　signal　(noise).　Herein,　an　axial-excitation　LIF　based　on　pinhole　metal-capillary　(PMC)　and　direct　laser-diode　excitation　was　proposed.　An　overall　~480　fold　improvement　on　SNR　was　realized,　because　the　laser-sidewall　interaction　(LSI)　and　related　background　signal　(noise)　can　be　effectively　suppressed　in　PMC　by　avoidance　of　laser　leakage　and　laser　contact　with　capillary　sidewall.　For　rhodamine　B　detection　without　sample　enrichment,　a　detection　limit　of　concentration　(DLC)　of　0.4　pM　was　obtained,　which　is　2.5　fold　lower　than　the　DLC　(1　pM)　of　commercial　LIFs　equipped　with　bulky　and　expensive　Ar+　laser.　For　selective　detection　of　Cu2+,　a　DLC　of　5　pM　was　realized,　which　is　more　than　40　fold　lower　than　that　of　previous　fluorimetry　detection　with　similar　quantum-dot　probe.　The　PMC-LIF　features　compact　(16　×　4　×　4　cm3),　low-cost　and　high　concentration　detectability.　©　2020

Keyword：

Argon lasers Costs Laser excitation Rhodamine B Semiconductor quantum dots Signal to noise ratio

Community：

[ 1 ] [Cai, Weicheng]Key Lab of Liaoning IC Technology, School of Biomedical Engineer, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian; 116024, China
[ 2 ] [Huang, Hui]Key Lab of Liaoning IC Technology, School of Biomedical Engineer, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian; 116024, China
[ 3 ] [Yang, Zhibo]Key Lab of Liaoning IC Technology, School of Biomedical Engineer, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian; 116024, China
[ 4 ] [Shang, Ruichen]Key Lab of Liaoning IC Technology, School of Biomedical Engineer, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian; 116024, China
[ 5 ] [Li, Xuejing]Key Lab of Liaoning IC Technology, School of Biomedical Engineer, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian; 116024, China
[ 6 ] [Ma, Chi]Key Lab of Liaoning IC Technology, School of Biomedical Engineer, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian; 116024, China
[ 7 ] [Zhao, Jian]School of Automotive Engineering, Dalian University of Technology, Dalian; 116024, China
[ 8 ] [Liu, Pengbo]School of Automotive Engineering, Dalian University of Technology, Dalian; 116024, China
[ 9 ] [Wang, Jian]Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou; 350108, China
[ 10 ] [Wang, Wei]Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou; 350108, China

Reprint 's Address：

Email：

Show more details

Related Keywords：

Resonant third harmonic generation of KrF laser in Ar gas
2014，Review of Scientific Instruments
Non-linear intensity response in glow discharge emission spectroscopy: Excitation, radiative transfer and self-absorption
2025，Spectrochimica Acta - Part B Atomic Spectroscopy
Assembly, characterization, and photocatalytic activities of TiO2 nanotubes/CdS quantum dots nanocomposites
2011，JOURNAL OF NANOPARTICLE RESEARCH
Spatial and Channel Aggregation Network for Lightweight Image Super-Resolution
2023，SENSORS
Structural design and analysis of a picking robot arm using parallel grippers
2024，Advances in Mechanical Engineering

Source ：

Optics and Lasers in Engineering

ISSN： 0143-8166

Year： 2021

Volume： 139

5 . 6 6 6

JCR@2021

3 . 5 0 0

JCR@2023

ESI HC Threshold：105

JCR Journal Grade：1

CAS Journal Grade：2

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 2

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

Affiliated Colleges：

Get Fulltext

DOI Library Discovery Baidu Scholar Search Engineering Village

Type
Departments

All Years Choose Year From to