Rapid fabrication of microfluidic mixer chip by non-isothermal molding method based on resistance heating principle and its application in pesticide residue detection

Xu, Jinghua; Xie, Jiaqing; Zhang, Xinyue; Pang, Haoran; Sun, Ruqian; Zhou, Fuyang

doi:10.1088/1361-6439/ac9397

Cited by 3 publications

(3 citation statements)

References 32 publications

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“…During the heating stage, PMMA is softened and exhibits viscoelastic mechanical behavior when heated above the transition temperature (Tg). As analyzed above, the viscoelastic property of PMMA is described by the Generalized Maxwell model [15]. The Maxwell constitutive model parameters are listed in Table 2.…”

Section: Numerical Simulations Of Roll-to-plate Hot Embossing For Mic...mentioning

confidence: 99%

Numerical and experimental study of roll-to-plate hot embossing process of optical microstructures

ZHU,

LI,

CHEUNG

et al. 2023

Eighth Asia Pacific Conference on Optics Manufacture and Third International Forum of Young Scientists on Advanced Optical Manu

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Section: Numerical Simulations Of Roll-to-plate Hot Embossing For Mic...mentioning

confidence: 99%

Numerical and experimental study of roll-to-plate hot embossing process of optical microstructures

ZHU,

LI,

CHEUNG

et al. 2023

Eighth Asia Pacific Conference on Optics Manufacture and Third International Forum of Young Scientists on Advanced Optical Manu

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“…Regarding viscoelasticity applications, Xu et al 11 performed compression creep tests on PMMA material. They fitted a six-unit Maxwell intrinsic structure model with a Prony series and conducted non-isothermal formation process simulations and experiments on the PMMA.…”

Section: Introductionmentioning

confidence: 99%

“…Regarding viscoelasticity applications, Xu et al 11 . performed compression creep tests on PMMA material.…”

Section: Introductionmentioning

confidence: 99%

Algorithm for accurate shear relaxation modulus analysis in glass viscoelasticity characterization

Zhou,

Gao

et al. 2023

J Am Ceram Soc.

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Numerical simulation of the glass molding process and analysis of material viscoelasticity are growing increasingly significant as the research on optical‐device glass molding intensifies. An accurate and efficient analytical algorithm for the shear relaxation modulus in the viscoelasticity characterization of glass was developed in this study. We measured the high‐temperature creep curve, friction coefficient, and elastic modulus of glass (D‐LaF50) according to the requirements for viscoelasticity characterization. The viscoelastic behavior of glass was characterized based on the analytical algorithm and test results. A finite element analysis model was developed to verify the accuracy of the analytical algorithm. The results show that the error of the proposed algorithm's numerical simulation compared to the test results is within 5%.

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Prediction method of long-term creep deformation of mobile phone resin lens module in a harsh temp environment

Sun,

Xie,

et al. 2024

Appl. Opt.

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In recent years, the replacement cycle of digital products such as mobile phones in the market has significantly increased, and the accurate prediction of attenuation under long-term usage conditions of the lens module, storage, and other components has become important. The vast majority of mobile phone lens modules are processed from optical resins, and the degradation of their imaging performance is mainly caused by assembly deformation and long-term creep deformation after a high-temperature reliability test. Therefore, there is an urgent need for a reliable model to describe the long-term creep deformation of the mobile phone resin lens module in a harsh temperature environment. This study proposed a modified derivation method for the parameters of the Maxwell constitutive model to predict the long-term creep deformation of the mobile phone resin lens module in a high-temperature environment. The fitting accuracy of the modified generalized Maxwell model and the time-hardening model were compared through uniaxial compression creep experiments. Long-term creep simulations and experiments were conducted on the mobile phone resin lens module; the deformation law of each component of the mobile phone resin lens module was identified; and the creep deformation mechanism was elucidated. The result shows that the modified generalized Maxwell model has much higher accuracy than the time-hardening model in predicting the long-term creep deformation of different resin materials. When considering the influence of the creep phenomenon, the simulation result matches well with the experimental result, and the high-temperature creep mechanism of the mobile phone resin lens module was clarified. In addition, it was found that the maximum deformation of the lens occurred at the lens with the largest size, which was 2.1 µm, and the position with the largest surface deviation was at the edge of the lens. The prediction method proposed in this study can provide guidance and correction suggestions for the structural design of a mobile phone resin lens module and the rationality of optical design; thus, the imaging accuracy of lens modules will be guaranteed to the greatest extent possible.

show abstract

Rapid fabrication of microfluidic mixer chip by non-isothermal molding method based on resistance heating principle and its application in pesticide residue detection

Cited by 3 publications

References 32 publications

Numerical and experimental study of roll-to-plate hot embossing process of optical microstructures

Numerical and experimental study of roll-to-plate hot embossing process of optical microstructures

Algorithm for accurate shear relaxation modulus analysis in glass viscoelasticity characterization

Prediction method of long-term creep deformation of mobile phone resin lens module in a harsh temp environment

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