With performance improvements,organic photovoltaics(OPVs)are an increasingly competitive technology for renewable energy.However,most high-performance OPVs are small-area devices processed from toxic halogenated solve...With performance improvements,organic photovoltaics(OPVs)are an increasingly competitive technology for renewable energy.However,most high-performance OPVs are small-area devices processed from toxic halogenated solvents via spin-coating,posing a challenge for mass production.We study a low-cost polymer donor(PTQ10)and a nonfullerene acceptor(DTY6)in a halogen-free solvent using industrially relevant blade coating.The non-inverted architecture performed best,achieving 12%efficiency,with the blade-coating deposition surpassing spin-coating.Active layers processed from the two coating techniques exhibited similar exciton quenching,likely due to the same measured nanodomain size and purity.However,blade-coated devices exhibited a higher charge carrier lifetime correlated with increased acceptor pi-stacking despite decreased donor pi-stacking.This suggests that optimizing crystallinity in bladecoated devices could result in even higher performance.Additionally,high performance in upscaled blade-coated devices(1 cm2)processed in air with a green solvent demonstrated the industrial potential of this system.展开更多
Optical filters with different configurations based on cholesteric liquid crystals （CLCs） are designed. The central wavelength from CLCs can be tuned by the electric field or temperature. For the electric field tuni...Optical filters with different configurations based on cholesteric liquid crystals （CLCs） are designed. The central wavelength from CLCs can be tuned by the electric field or temperature. For the electric field tuning, the ITO is designed with circular patterns, which can make the tunable range 18 nm. For the temperature tuning, two-layer- CLC configurations are used. The experimental results indicate that a deepened or broadened bandgap from the CLC can be achieved by different handedness or concentrations of chiral dopants. The spectrum study is carried out.展开更多
BACKGROUND In rotator cuff repair surgery,the double-row technique is widely performed.Studies have shown that with increased contact area and pressure between tendon and bone interface,better healing is promoted.AIM ...BACKGROUND In rotator cuff repair surgery,the double-row technique is widely performed.Studies have shown that with increased contact area and pressure between tendon and bone interface,better healing is promoted.AIM To assess the different suture configurations with the double-row technique and how this influences the contact area of the rotator cuff tendon to bone.METHODS This was a controlled laboratory study where identical tears were created in 24 fresh porcine shoulders over a 1.5 cm×2.5 cm infraspinatus insertion footprint.Double-row repair techniques,with 3 to 4-suture anchors in different configurations(2 medial,2 lateral vs 2 medial,1 lateral vs 1 medial,2 lateral),were employed for three control groups.Each group consisted of eight shoulders with identical repair configurations.Footprint contact areas of the repaired tendon against the tuberosity were determined using pressure sensitive Fujifilm placed between the tendon and tuberosity.RESULTS The mean contact area between tendon and insertion footprint from the imprinted Fujifilm was obtained using computer software.The contact area measured from a standard 4-suture anchor double row repair was 75.1±9.3 mm2,whereas areas obtained for the 2 lateral-1 medial and 2 medial-1 lateral anchor configurations were 72.9±5.2 mm2 and 75.0±4.9 mm2 respectively.No statistical significance was noted between the three groups.CONCLUSION In the technique of double-row repair,using a 3-suture anchor configuration may offer a non-inferior alternative to the standard 4-anchor construct in terms of efficacy.This may also result in overall cost reduction and shorter surgical time.展开更多
We have simulated the processes of transient reconnection at the nightside magnetopause by using a two-dimensional compressible MHD model.According to the simulation results,three types of global reconnection configur...We have simulated the processes of transient reconnection at the nightside magnetopause by using a two-dimensional compressible MHD model.According to the simulation results,three types of global reconnection configuration at the magnetopause are proposed.The main results are summarized as follows.展开更多
基金the US National Science Foundation(NSF),Division of Materials Research,Electronic and Photonic Materials Program under grant#2247711support from the Bio Voltaico project n.A0613-2023-078175 of the POR FESR 2021/2027 Riposizionamento Competitivo RSI-Economia del Mare,Green Economy e Agrifood initiative,and Integrated Terrestrial And Non-Terrestrial Networks(ITANTN)project under the Research and innovation on future Telecommunications systems and networks,to make Italy more smart(RESTART)initiative of the PNRRsupported by the NSF Division of Physics Research Experience for Undergraduates under grant#2349426。
文摘With performance improvements,organic photovoltaics(OPVs)are an increasingly competitive technology for renewable energy.However,most high-performance OPVs are small-area devices processed from toxic halogenated solvents via spin-coating,posing a challenge for mass production.We study a low-cost polymer donor(PTQ10)and a nonfullerene acceptor(DTY6)in a halogen-free solvent using industrially relevant blade coating.The non-inverted architecture performed best,achieving 12%efficiency,with the blade-coating deposition surpassing spin-coating.Active layers processed from the two coating techniques exhibited similar exciton quenching,likely due to the same measured nanodomain size and purity.However,blade-coated devices exhibited a higher charge carrier lifetime correlated with increased acceptor pi-stacking despite decreased donor pi-stacking.This suggests that optimizing crystallinity in bladecoated devices could result in even higher performance.Additionally,high performance in upscaled blade-coated devices(1 cm2)processed in air with a green solvent demonstrated the industrial potential of this system.
基金Supported by the National Natural Science Foundation of China under Grant Nos 61107059,61308052 and 61077047the Fundamental Research Funds for the Central Universitiesthe 111 Project of the Harbin Engineering University under Grant No B13015
文摘Optical filters with different configurations based on cholesteric liquid crystals （CLCs） are designed. The central wavelength from CLCs can be tuned by the electric field or temperature. For the electric field tuning, the ITO is designed with circular patterns, which can make the tunable range 18 nm. For the temperature tuning, two-layer- CLC configurations are used. The experimental results indicate that a deepened or broadened bandgap from the CLC can be achieved by different handedness or concentrations of chiral dopants. The spectrum study is carried out.
文摘BACKGROUND In rotator cuff repair surgery,the double-row technique is widely performed.Studies have shown that with increased contact area and pressure between tendon and bone interface,better healing is promoted.AIM To assess the different suture configurations with the double-row technique and how this influences the contact area of the rotator cuff tendon to bone.METHODS This was a controlled laboratory study where identical tears were created in 24 fresh porcine shoulders over a 1.5 cm×2.5 cm infraspinatus insertion footprint.Double-row repair techniques,with 3 to 4-suture anchors in different configurations(2 medial,2 lateral vs 2 medial,1 lateral vs 1 medial,2 lateral),were employed for three control groups.Each group consisted of eight shoulders with identical repair configurations.Footprint contact areas of the repaired tendon against the tuberosity were determined using pressure sensitive Fujifilm placed between the tendon and tuberosity.RESULTS The mean contact area between tendon and insertion footprint from the imprinted Fujifilm was obtained using computer software.The contact area measured from a standard 4-suture anchor double row repair was 75.1±9.3 mm2,whereas areas obtained for the 2 lateral-1 medial and 2 medial-1 lateral anchor configurations were 72.9±5.2 mm2 and 75.0±4.9 mm2 respectively.No statistical significance was noted between the three groups.CONCLUSION In the technique of double-row repair,using a 3-suture anchor configuration may offer a non-inferior alternative to the standard 4-anchor construct in terms of efficacy.This may also result in overall cost reduction and shorter surgical time.
文摘We have simulated the processes of transient reconnection at the nightside magnetopause by using a two-dimensional compressible MHD model.According to the simulation results,three types of global reconnection configuration at the magnetopause are proposed.The main results are summarized as follows.
