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  • AIP Publishing  (5)
  • English  (5)
  • 1
    Online Resource
    Online Resource
    Predictive model for the spreadability of cosmetic formulations based on large amplitude oscillatory shear (LAOS) and machine learning
    AIP Publishing ; 2022
    In:  Physics of Fluids Vol. 34, No. 10 ( 2022-10-01)
    Details
    In: Physics of Fluids, AIP Publishing, Vol. 34, No. 10 ( 2022-10-01)
    Abstract: Inspired by the analogy between the application process of cosmetics and large amplitude oscillatory shear (LAOS), we suggest a novel predictive model for the spreadability of cosmetic formulations via LAOS analysis and machine learning techniques. Rheological measurements of cosmetic formulations, including the transient elastic and viscous moduli from the sequence of physical process (SPP) analysis, were selected as features for the predictive models, and the spreadability of each formulation that is quantitatively rated by trained panels was set up as the target variable. First, multiple linear regression prediction models are derived, and it was shown that the LAOS-SPP parameters were more effective features than other rheological parameters that were conventionally related to spreadability of cosmetics. Additionally, a non-linear prediction model was developed based on the random forest regressor algorithm, considering the possibility of the nonlinear correlation between rheological measurements and spreadability. The random forest regressor model showed better performance than the linear regression model, and the LAOS-SPP parameters were found to be more effective features for the random forest regressor model as in the multiple linear regression model. The correlation between the LAOS-SPP parameters and the spreadability is interpreted in terms of the rheological transition during rubbing process of cosmetics. Our findings indicate the importance of the nonlinear rheological behavior in the texture perception mechanism of cosmetics, and how rheological measurements can be combined with machine learning techniques to solve complicated problems.
    Type of Medium: Online Resource
    ISSN: 1070-6631 , 1089-7666
    URL: Article
    DOI: 10.1063/5.0117989
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 1472743-2
    detail.hit.zdb_id: 241528-8
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  • 2
    Online Resource
    Online Resource
    Ferromagnetic ZnO bicrystal nanobelts fabricated in low temperature
    AIP Publishing ; 2006
    In:  Applied Physics Letters Vol. 89, No. 9 ( 2006-08-28)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 89, No. 9 ( 2006-08-28)
    Abstract: Zinc oxide bicrystal nanobelts were fabricated via a vapor phase transport of a powder mixture of Zn, BiI3, and MnCl2∙H2O at temperatures as low as 300°C. The bicrystal nanobelts, growing along the [011−3] direction, have the widths of 40–150nm and lengths of tens of microns. The energy dispersive x-ray spectroscopy result verifies that the bicrystal nanobelts contain higher concentration of both Bi and Mn along the grain boundary. The investigation of the growth mechanism proposes that MnBi may induce the formation of bicrystal nanobelts. Photoluminescence spectra show that the ultraviolet emission of the bicrystal nanobelts has a blueshift of 18meV as compared to Bi–ZnO nanowires at 10K. The bicrystal nanobelts also exhibit ferromagnetism at room temperature.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.2339048
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2006
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 3
    Online Resource
    Online Resource
    Effects of additional Ce3+ doping on the luminescence of Li2SrSiO4:Eu2+ yellow phosphor
    AIP Publishing ; 2010
    In:  Applied Physics Letters Vol. 96, No. 6 ( 2010-02-08)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 96, No. 6 ( 2010-02-08)
    Abstract: Additional Ce3+ doping improves the luminescence of Li2SrSiO4:Eu2+, a yellow phosphor for ultraviolet or blue light-emitting diodes. By examining the photoluminescence of Li2SrSiO4:Eu2+, Li2SrSiO4:Ce3+, and Li2SrSiO4:Ce3+,Eu2+, it was confirmed that the energy transfer from Ce3+ to Eu2+ ions contributes little to the enhanced luminescence of Li2SrSiO4:Ce3+,Eu2+. Alternatively, we suggested that Ce3+ ions could stabilize the Li vacancies, inhibit the oxidization of Eu2+ to Eu3+, and consequently increase emission intensity, based on the characterizations with decay time and synchrotron light source x-ray absorption measurements. The proposed argument was validated with first principle calculations of the defect formation energies.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.3308486
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2010
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 4
    Online Resource
    Online Resource
    A monolithic linear motion platform driven by a piezoelectric and fluidic pressure-fed dual mechanism
    AIP Publishing ; 2021
    In:  Review of Scientific Instruments Vol. 92, No. 10 ( 2021-10-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 92, No. 10 ( 2021-10-01)
    Abstract: This paper presents a novel dual-mode motion mechanism capable of achieving nanopositioning on a monolithic linear motion platform. Unlike conventional dual-mode stages that use piezoelectric (PZT)- and electromagnetic-combined or similar actuation mechanisms comprising two separate motion axes, the dual-mode actuation was developed by combining a PZT for a coarse motion and a fluidic pressure-fed mechanism (FPFM) for a fine motion and was implemented in a monolithic flexure stage fabricated by metal additive manufacturing. The FPFM actuates the flexure stage by pressuring the media in the fluidic channels created inside the flexure spring structures. Experimental tests were performed to investigate the performance of the dual-mode linear motion platform. The stiffness, damping, and frequency response functions of the dual-mode stage were experimentally characterized. The proportional–integral–differential control combined with dual-mode control was employed to control the position of the flexure stage while bidirectionally controlling the flow of compressed air for a fine motion. The FPFM motion showed a good response to 1 nm stepwise input (every 10 psi), and it was implemented to provide up to ∼10 nm fine motion along with the PZT coarse motion (1 µm). The hysteresis characteristics of the FPFM were also characterized and compensated to track the positioning error.
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0056955
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
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  • 5
    Online Resource
    Online Resource
    Highly efficient electrochemiluminescence from Ru(II) complex with PEO-PHP-PEO as a buffer layer
    AIP Publishing ; 2008
    In:  Journal of Applied Physics Vol. 103, No. 10 ( 2008-05-15)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 103, No. 10 ( 2008-05-15)
    Abstract: A blended layer composed of a coil-rod-coil triblock oligomer and LiCF3SO3 was introduced into light-emitting electrochemical cells. The response rate and efficiency of the device were greatly improved, and a low operating voltage was maintained. The device, with a structure of indium tin oxide/PEO-PHP-PEO(LiCF3SO3)/[Ru(bpy)3] (PF6)2/Au, showed a turn-on voltage as low as 2.85 V, while its luminance and efficiency were approximately twice those of a single-layer device. The power, luminance, and external quantum efficiency at 1000 cd/m2 reach 2.1 cd/A, 1.5l m/W, and 2.6%, respectively. We attribute these improvements to the enhancement in the hole injection and electron blocking effect resulting from the blended layer.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.2931011
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2008
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
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