Chen Li

ORCID: 0000-0002-7917-7479
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About
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Research Areas
  • Body Composition Measurement Techniques
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Plasmonic and Surface Plasmon Research
  • Thermoregulation and physiological responses
  • Advanced biosensing and bioanalysis techniques
  • Healthcare and Venom Research
  • Advanced Manufacturing and Logistics Optimization
  • Industrial Vision Systems and Defect Detection
  • Metamaterials and Metasurfaces Applications
  • Advanced Nanomaterials in Catalysis
  • Scheduling and Optimization Algorithms
  • Diagnosis and Treatment of Venous Diseases
  • Alzheimer's disease research and treatments
  • Supramolecular Self-Assembly in Materials
  • Liquid Crystal Research Advancements
  • Biosensors and Analytical Detection
  • Nutrition and Health in Aging
  • Gas Sensing Nanomaterials and Sensors
  • Sports injuries and prevention
  • Protein Interaction Studies and Fluorescence Analysis
  • Body Contouring and Surgery
  • Optimal Experimental Design Methods
  • Microwave and Dielectric Measurement Techniques
  • Nasal Surgery and Airway Studies
  • Photochemistry and Electron Transfer Studies

Peking University
2024

China Medical University
2023

Wuhan Textile University
2022

Wuhan University of Technology
2022

Beijing Information Science & Technology University
2021

Central South University
2021

Tea Research Institute
2021

Chongqing University
2020

Lanzhou University
2020

Anhui University of Technology
2020

Silver is the ideal material for plasmonics because of its low loss at optical frequencies but often replaced by a more lossy metal, gold. This silver's tendency to tarnish and roughen, forming Ag(2)S on surface, dramatically diminishing properties rendering it unreliable applications. By passivating surface silver nanostructures with monolayer graphene, atmospheric sulfur containing compounds are unable penetrate graphene degrade silver. Preventing this sulfidation eliminates increased...

10.1021/nl301555t article EN Nano Letters 2012-07-15

We report a synthetic approach to produce raspberry-like plasmonic nanostructures with unusually strong magnetic resonances, termed metamolecules (raspberry-MMs). The synthesis based on the surfactant-assisted templated seed-growth method allows for simultaneous one-step and assembly of well-insulated gold nanoparticles. aromatic surfactant used syntheses forms thin protective layer around nanoparticles, preventing them from touching each other making it possible pack discrete nanoparticles...

10.1021/nn5050678 article EN ACS Nano 2015-01-27

We detail the formation and properties associated with stable glasses (SG) formed by a series of structural analogues 1,3-bis(1-naphthyl)-5-(2-naphthyl)benzene (α,α,β-TNB), well-studied SG former. Five compounds similar were synthesized physical vapor-deposited constant deposition rate at various substrate temperatures (Tdep) in range between 0.73 Tg 0.96 Tg. These molecules include α,α,β-TNB, 3,5-di(naphthalen-1-yl)-1-phenylbenzene (α,α-P), 9-(3,5-di(naphthalen-1-yl)phenyl)anthracene...

10.1063/1.4928521 article EN The Journal of Chemical Physics 2015-08-26

Surface-enhanced Raman scattering (SERS), as an important tool for interface research, occupies a place in the field of molecular detection and analysis due to its extremely high sensitivity fingerprint characteristics. Substantial efforts have been put into improvement enhancement factor (EF) by way modifying SERS substrates. Recently, MoS2 has emerged one most promising substrates SERS, which is also exploited complementary platform on conventional metal optimize properties. In this...

10.3390/coatings12030360 article EN Coatings 2022-03-08

Surfaces or interfaces are considered to be key factors in facilitating the formation of amyloid fibrils under physiological conditions. In this report, we study kinetics surface-mediated fibrillization (SMF) an amyloid-β fragment (Aβ12–28) on mica. We employ a spin-coating-based drying procedure control exposure time substrate low-concentration peptide solution and then monitor fibril growth as function via atomic force microscopy (AFM). The evolution is quantitatively characterized terms...

10.1021/acs.langmuir.7b02744 article EN Langmuir 2018-03-27

Here, we report surprisingly weak distance dependence in Raman enhancement from a raspberry-like gold nanoparticle termed raspberry-MM. A raspberry-MM is composed of closely packed nanobeads assembled on polymer core. Due to the abundant "built-in" hot spots between adjacent nanobeads, bright and uniform signals were observed isolated single raspberry-MMs. Interestingly, dimers raspberry-MMs also showed highly reproducible signals, indicating that dimer SERS signal not strongly dependent...

10.1021/acs.jpcc.5b09396 article EN The Journal of Physical Chemistry C 2015-10-30

Raspberry-like metamolecules (RMMs), clusters of closely packed noble metal nanobeads self-assembled on a dielectric core, exhibit emergent optical properties not available in simple nanoparticles. Examples include broad band far-field extinction and artificial magnetism. An important feature these is that their magnetic plasmon resonance the breadth spectra can be tuned via synthetic routes, such as by changing bead size, core or average interbead distance. However, effect each variables...

10.1021/acs.jpcc.8b00439 article EN The Journal of Physical Chemistry C 2018-02-28

Metal nanostructures show great applications in chemical sensing, biomedical detection, optical-thermal therapy, and optical communications because of their electromagnetic field enhancement properties at the visible near-field infrared wavelengths.Such strong induced by localized surface plasmon resonance is dependent on configurations sizes metal nanoparticles.We presented a numerical investigation plasmonic individually welded silver nanoparticles fabricated nanojoining technique.It shows...

10.2174/1876531901103010076 article EN The Open Surface Science Journal 2010-01-01

In this work, we develop a novel, in situ characterization method to measure the orientation order parameter and investigate reorientation reshaping dynamics of polymer grafted gold nanorods (AuNRs) nanocomposite (PNC) thin films. The long aspect-ratio AuNRs results two well-defined plasmon resonance modes, allowing optical properties PNC be tuned over wide spectral range. alignment particular direction can also used further tune these properties. We utilize variable angle spectroscopic...

10.1039/c6sm02403c article EN Soft Matter 2017-01-01

Realizing quantitative surface-enhanced Raman scattering (SERS) analysis is extremely helpful and challenging. Here, we utilize a facile method to synthesize spiked plasmonic nanorods with an interior gap. The signal from the molecules embedded in gap can be dramatically enhanced, leading strong, stable, reproducible SERS signals that used as internal reference for analysis. We demonstrate rough exterior surface has good performance enhancing of polycyclic aromatic hydrocarbon adsorbed on...

10.1021/acsomega.8b01153 article EN publisher-specific-oa ACS Omega 2018-10-30

To improve the sensitivity of surface-enhanced Raman spectroscopy (SERS) detection, we propose a three-dimensional (3D) SERS chip based on an inverted pyramid micro-reflector (IPMR) that converges scattering light signals to signal collection efficiency. The influence geometric parameters structure efficiency was analyzed by simulation for determination optimal design parameters. through-hole prepared silicon wafer through anisotropic wet etching process, followed sputtering gold film form...

10.1364/oe.410966 article EN cc-by Optics Express 2020-12-08

Nanostructured metal oxide-based resistive-type gas sensors are of high research interest. Chemical stability is the most critical issue due to surface electron species and density. In present paper, 2D-nanostructured WO 3 was prepared characterized, a -based sensor fabricated analyzed. The results showed that synthesized material exhibited nanosheet structure, during hydrogen sensing testing, current baseline shifted with various tendencies, even completely opposite directions under...

10.1142/s1793292016500922 article EN NANO 2016-04-28

There are various data mining and analysis tools in use by high-volume semiconductor manufacturers throughout the industry that seek to provide robust monitoring capabilities for purpose of maintaining a stable lithography process. These exist both online offline formats draw upon from sources analysis. This paper explores several possible cases run-time scanner advanced overlay imaging signatures. Here we demonstrate use-cases analyzing stabilizing processes. Applications include high order...

10.1117/12.2046330 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2014-04-14

The article proposes a crossover strategy improved genetic algorithm to solve the shop scheduling problem for traditional algorithm. uses coding method, based on process and introduction of linear weighted fitness function, greedy count sub-fitness ratio combined select operation. is able improve search efficiency, accuracy, avoid premature shortcomings.

10.1109/iccsnt.2013.6967051 article EN 2013-10-01

At present, the most common materials for solar-blind UV light detectors are wide band-gap semiconductors, which generally have high requirements and complex methods preparation. Ordinary semiconductor such as silicon, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="normal">T</mml:mi> mathvariant="normal">i</mml:mi> </mml:mrow> <mml:msub> mathvariant="normal">O</mml:mi> <mml:mn>2</mml:mn> </mml:msub>...

10.1364/ao.400961 article EN Applied Optics 2020-08-13
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