Soft lithography is a low-cost and convenient method for the forming and manufacturing of micro/ nanostructures compared to the traditional optical lithography. In soft lithography, poly（dimethylsiloxane） （PDMS） s...Soft lithography is a low-cost and convenient method for the forming and manufacturing of micro/ nanostructures compared to the traditional optical lithography. In soft lithography, poly（dimethylsiloxane） （PDMS） stamps with relief structures have been widely used to transfer patterns. The traditional fabrication approach of PDMS stamps is time-consuming since the master has been occupied during the curing process. By adding and repeating fast nanoimprint step, many intermediate polymeric molds can be produced from the master and these molds can then be employed to replicate more PDMS stamps while the time used is close to that of the common way. We demonstrated this idea by three masters which were made by the DEM （Deepetching, Electroforming and Microreplicating） and FIB （Focused Ion Beam） techniques. The photos show that the patterns on the PMDS stamps successfully duplicated patterns on the origin masters.展开更多
In recent years, Vantico A &T US Incorporation has developed a type of the hightest accuracy photosensitive resin: SL5510 stereolithography material(briefly named SL5510) to use in the stereolithography apparatus(...In recent years, Vantico A &T US Incorporation has developed a type of the hightest accuracy photosensitive resin: SL5510 stereolithography material(briefly named SL5510) to use in the stereolithography apparatus(SLA). In this paper, the thermal and mechanical properties were investigated for the fabricated specimens of SL5510 in the different UV post-cure time. This may instruct us to employ better the fabricated parts of SL5510.展开更多
In the inking system of an offset printing press,a vibrator roller distributes ink not only in the circumferential direction but also in the axial direction.In the control process,if ink amount is determined only by t...In the inking system of an offset printing press,a vibrator roller distributes ink not only in the circumferential direction but also in the axial direction.In the control process,if ink amount is determined only by the dot area coverage without considering the impact of vibrator roller's oscillation,the printing colour quality will be reduced.This paper describes a method of calculating the impact factor of vibrator roller' s oscillation.First,the oscillation performance is analyzed and sample data of impact factor is got.Then,a fuzzy controller used for the calculation of the impact factor is designed,and genetic algorithm is used to optimize membership functions and obtain the fuzzy control rules automatically.This fuzzy controller can be used to calculate impact factors for any printing condition,and the impact factors can be used for ink amount control in printing process and it is important for higher printing colour quality and lowering ink and paper waste.展开更多
This article presents sequential inkjet-based method to produce double emulsions as templates to fabricate morphology-controlled and inner-modified hole-shell microparticles. This sequential printing strategy for prod...This article presents sequential inkjet-based method to produce double emulsions as templates to fabricate morphology-controlled and inner-modified hole-shell microparticles. This sequential printing strategy for producing double emulsions circumvents complex wettability modification of the microchannels in lithography-based microfluidic device and largely saves the reagent in comparison to the coaxial two-phase jet in glass capillary. The formation of hole-shell structures is attributed to the diffusion of solvent out of droplets into butanol at the interface between oil and extract phase. The change of hole size is controlled by different diffusion rate, which is determined by changing the volume ratio of butanol and alcohol in extract phase.This presented flexible method can fabricate some functionalized microparticles in our future work.展开更多
Based on original archival and codicological research, this paper in- vestigates the transformations and negotiations between manuscript and printed versions of fifteenth-century poetry through the specific example of...Based on original archival and codicological research, this paper in- vestigates the transformations and negotiations between manuscript and printed versions of fifteenth-century poetry through the specific example of one surprisingly complex debate poem, Le Songe de la Pucelle （The Dream of the Virgin）. Our debate relates the choice that a female narrator must make between the respective appeals of two personifications, Love and Shame, who appear to her in a dream- vision. The manuscript tradition invariably collects the poem with other fifteenth- century debates and moral texts, while the early printed copies tended to have experienced a prior separate circulation and often remain as monotextual pamphlets. Manuscript and printed copies of the same poem seem, then, to target different audiences. My paper investigates this curious divergence in the transmission pattern of the manuscript and printed versions of the Songe and seeks possible answers in the very different sets of images accompanying the text in manuscript and printed versions.展开更多
文摘Soft lithography is a low-cost and convenient method for the forming and manufacturing of micro/ nanostructures compared to the traditional optical lithography. In soft lithography, poly（dimethylsiloxane） （PDMS） stamps with relief structures have been widely used to transfer patterns. The traditional fabrication approach of PDMS stamps is time-consuming since the master has been occupied during the curing process. By adding and repeating fast nanoimprint step, many intermediate polymeric molds can be produced from the master and these molds can then be employed to replicate more PDMS stamps while the time used is close to that of the common way. We demonstrated this idea by three masters which were made by the DEM （Deepetching, Electroforming and Microreplicating） and FIB （Focused Ion Beam） techniques. The photos show that the patterns on the PMDS stamps successfully duplicated patterns on the origin masters.
基金This research was supported by the Key Science and Technology Foundation of Hubei Province Scientific Committee (2001P0205) and theNational"863"H-Tech Foundation (2002AA6Z3083)
文摘In recent years, Vantico A &T US Incorporation has developed a type of the hightest accuracy photosensitive resin: SL5510 stereolithography material(briefly named SL5510) to use in the stereolithography apparatus(SLA). In this paper, the thermal and mechanical properties were investigated for the fabricated specimens of SL5510 in the different UV post-cure time. This may instruct us to employ better the fabricated parts of SL5510.
基金Supported by the National Science and Technology Supporting Program(No.2012BAF13B05-1)National Natural Science Foundation(No.51105009)Beijing Natural Science Foundation(No.3113025)
文摘In the inking system of an offset printing press,a vibrator roller distributes ink not only in the circumferential direction but also in the axial direction.In the control process,if ink amount is determined only by the dot area coverage without considering the impact of vibrator roller's oscillation,the printing colour quality will be reduced.This paper describes a method of calculating the impact factor of vibrator roller' s oscillation.First,the oscillation performance is analyzed and sample data of impact factor is got.Then,a fuzzy controller used for the calculation of the impact factor is designed,and genetic algorithm is used to optimize membership functions and obtain the fuzzy control rules automatically.This fuzzy controller can be used to calculate impact factors for any printing condition,and the impact factors can be used for ink amount control in printing process and it is important for higher printing colour quality and lowering ink and paper waste.
基金supported by the National Natural Science Foundation of China(21435002,21621003)the National Key R&D Program of China(2017YFC0906800)
文摘This article presents sequential inkjet-based method to produce double emulsions as templates to fabricate morphology-controlled and inner-modified hole-shell microparticles. This sequential printing strategy for producing double emulsions circumvents complex wettability modification of the microchannels in lithography-based microfluidic device and largely saves the reagent in comparison to the coaxial two-phase jet in glass capillary. The formation of hole-shell structures is attributed to the diffusion of solvent out of droplets into butanol at the interface between oil and extract phase. The change of hole size is controlled by different diffusion rate, which is determined by changing the volume ratio of butanol and alcohol in extract phase.This presented flexible method can fabricate some functionalized microparticles in our future work.
文摘Based on original archival and codicological research, this paper in- vestigates the transformations and negotiations between manuscript and printed versions of fifteenth-century poetry through the specific example of one surprisingly complex debate poem, Le Songe de la Pucelle （The Dream of the Virgin）. Our debate relates the choice that a female narrator must make between the respective appeals of two personifications, Love and Shame, who appear to her in a dream- vision. The manuscript tradition invariably collects the poem with other fifteenth- century debates and moral texts, while the early printed copies tended to have experienced a prior separate circulation and often remain as monotextual pamphlets. Manuscript and printed copies of the same poem seem, then, to target different audiences. My paper investigates this curious divergence in the transmission pattern of the manuscript and printed versions of the Songe and seeks possible answers in the very different sets of images accompanying the text in manuscript and printed versions.
