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Piezoelectric diffuser/nozzle micropump with double pump chambers

WANG Wei, ZHANG Ying, TIAN Li, CHEN Xiaojie, LIU Xiaowei

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 449-453 doi: 10.1007/s11465-008-0076-4

Abstract: To eliminate check valve fatigue and valve clogging, diffuser/nozzle elements are used for flow rectificationin a valveless diffuser/nozzle micropump instead of valves.In this paper, a diffuser/nozzle Si/Glass micropump with two pump chambers by IC and MEMS technologyThe pump is equipped with a glass cover board so as to conveniently observe the flow status.Pump-chambers and diffuser elements are fabricated by the anisotropic KOH-etch technique on the silicone

Keywords： diffuser/nozzle Si/Glass     phenomenon     rectification     diffuser/nozzle micropump     frequency    

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Progress of three-dimensional macroporous bioactive glass for bone regeneration

Lijun JI, Yunfeng SI, Ailing LI, Wenjun WANG, Dong QIU, Aiping ZHU

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 470-483 doi: 10.1007/s11705-012-1217-1

Abstract: Bioactive glasses (BGs) are ideal materials for macroporous scaffolds due to their excellent osteoconductive, osteoinductive, biocompatible and biodegradable properties, and their high bone bonding rates. Macroporous scaffolds made from BGs are in high demand for bone regeneration because they can stimulate vascularized bone ingrowth and they enhance bonding between scaffolds and surrounding tissues. Engineering BG/biopolymers (BP) composites or hybrids may be a good way to prepare macroporous scaffolds with excellent properties. This paper summarizes the progress in the past few years in preparing three-dimensional macroporous BG and BG/BP scaffolds for bone regeneration. Since the brittleness of BGs is a major problem in developing macroporous scaffolds and this limits their use in load bearing applications, the mechanical properties of macroporous scaffolds are particularly emphasized in this review.

Keywords： bioactive glass     biopolymer     bone regeneration     macroporous scaffolds     tissue engineering    

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The electrostatic-alloy bonding technique used in MEMS

WANG Wei, CHEN Wei-ping

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2,   Pages 238-241 doi: 10.1007/s11465-006-0011-5

Abstract: Electrostatic-alloy bonding of silicon wafer with glass deposited by Au to form Si/Au-glass water, andbonding of Si/Au-glass with silicon wafer were researched during fabrication of pressure sensors.The silicon wafer and glass wafer with an Au film resistor were bonded by electrostatic bonding, andthen Si-Au alloy bonding was formed by annealing at 400vH for 2 h.

Keywords： Si/Au-glass     strength     MEMS packaging     process     sandwich structure    

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Experimental and CFD analysis of nozzle position of subsonic ejector

Xilai ZHANG, Shiping JIN, Suyi HUANG, Guoqing TIAN

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 167-174 doi: 10.1007/s11708-009-0001-5

Abstract: The influence of nozzle position on the performance of an ejector was analyzed qualitatively with freeExperimental investigations and computational fluid dynamics (CFD) analysis of the nozzle position ofThe results show that there is an optimum nozzle position for the ejector.The ejecting coefficient reaches its maximum when the nozzle is positioned at the optimum and decreasesMoreover, the nozzle position of an ejector is not a fixed value, but is influenced greatly by the flow

Keywords： ejector     nozzle position     ejecting coefficient     CFD    

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Depth of cut models for multipass abrasive waterjet cutting of alumina ceramics with nozzle oscillation

Jun WANG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 19-32 doi: 10.1007/s11465-009-0082-1

Abstract: of the depth of cut in multipass abrasive waterjet (AWJ) cutting of alumina ceramics with controlled nozzlesignificantly increase the depth of cut by an average of 50.8% as compared to single pass cutting without nozzle

Keywords： abrasive waterjet     engineering ceramics     depth of cut     cutting performance     nozzle oscillation     machining    

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Investigation into the influence of diffuser stagger angles on the flow field and performance of a centrifugal

XI Guang, DING Haiping, YUAN Minjian, ZHANG Chunmei, ZHOU Li

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 290-294 doi: 10.1007/s11708-007-0041-7

Abstract: The performance graphs of a centrifugal compressor under different diffuser stagger angles were measuredThe results show that the performance graph shifts when the diffuser stagger angle is altered; the influenceLarge scale vortices appear on the diffuser vane under larger incidence.An optimal diffuser stagger angle should exist at a specified flow rate to make the characteristic of

Keywords： diffuser stagger     incidence     different stagger     flow     centrifugal compressor    

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Influence of nozzle height to width ratio on ignition and NO

Liutao SUN, Yonghong YAN, Rui SUN, Zhengkang PENG, Chunli XING, Jiangquan WU

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 431-448 doi: 10.1007/s11708-021-0726-3

Abstract: (PF) of semicoke (SC), large-scale experiments were conducted in a 300 kW fired furnace at various nozzlesettings, i.e., ratios (denoted by / ) of the height of the rectangular burner nozzle to its widththe flame stability, ignition performance, and fuel burnout ratio were significantly improved at a nozzleThe results suggested that in a test furnace, regulating the nozzle / conditions sharply reduces NO

Keywords： rectangular jet burner     nozzle height to width ratio     ignition characteristics     pyrolyzed semicoke (SC)    

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An investigation into the properties of ternary and binary cement pastes containing glass powder

Marcelo Frota BAZHUNI, Mahsa KAMALI, Ali GHAHREMANINEZHAD

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 741-750 doi: 10.1007/s11709-018-0511-5

Abstract: The properties of binary and ternary cement pastes containing glass powder (GP) were examined.

Keywords： cement paste     glass powder     pozzolanic reaction     supplementary cementitious material    

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Plasma enhanced chemical vapor deposition of excellent a-Si:H passivation layers for a-Si:H/c-Si heterojunction

Lei ZHAO,Wenbin ZHANG,Jingwei CHEN,Hongwei DIAO,Qi WANG,Wenjing WANG

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 85-91 doi: 10.1007/s11708-016-0437-3

Abstract: The intrinsic a-Si:H passivation layer inserted between the doped a-Si:H layer and the c-Si substrateis very crucial for improving the performance of the a-Si:H/c-Si heterojunction (SHJ) solar cell.The passivation performance of the a-Si:H layer is strongly dependent on its microstructure.Usually, the compact a-Si:H deposited near the transition from the amorphous phase to the nanocrystallineIn this paper, intrinsic a-Si:H layers were prepared on n-type Cz c-Si substrates by 27.12 MHz PECVD

Keywords： PECVD     high pressure and high power     a-Si:H microstructure     passivation     heterojunction solar cell    

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Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 3-17 doi: 10.1007/s11465-017-0408-3

Abstract: time consuming to use machining processes, such as grinding, polishing and lapping, to produce optical glassPrecision glass molding (PGM) has thus been developed to realize an efficient manufacture of such opticalFor example, a PGM process must be carried out within the super-cooled region of optical glass aboveits glass transition temperature, in which the material has an unstable non-equilibrium structure.Within a narrow window of allowable temperature variation, the glass viscosity can change from 10

Keywords： precision glass molding     optical lens     constitutive modeling     optimization     manufacturing chain     Industry    

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Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 376-382 doi: 10.1007/s11709-010-0086-2

Abstract: Pre-tensioned high strength trusses using alloy steel bar are widely used as glass wall supporting systemsThe breakage of glass panes in this type of system occurs occasionally, likely to be due to error indesign and analysis in addition to other factors like glass impurity and stress concentration aroundIt is not uncommon to see many similar glass wall systems fail in the wind load test chambers under a

Keywords： tension system     glass wall     nonlinear analysis     pre-tensioning     second-order analysis    

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Influence of damages on static behavior of single-layer cable net supported glass curtain wall: full-scale

Gang SHI, Yongjiu SHI, Yuanqing WANG, Yongzhi ZUO, Xiaohao SHI, Zaoyang GUO,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 383-395 doi: 10.1007/s11709-010-0074-6

Abstract: The single-layer cable net supported glass curtain wall has been applied in many building structuresstudy the influence of such damages on the static behavior of the single-layer cable net supported glassThe stiffness contribution of glass panels to the single-layer cable net supported glass curtain wallThe stiffness contribution of glass panels increases with the load increase.Under the same loading condition, the stiffness contribution of glass panels to the damaged structure

Keywords： single-layer plane cable net supported glass curtain wall     damage     cable prestress loss     cable anchorageend failure     stiffness contribution of glass panels    

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Recycled glass replacement as fine aggregate in self-compacting concrete

Yasser SHARIFI, Mahmoud HOUSHIAR, Behnam AGHEBATI

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 419-428 doi: 10.1007/s11709-013-0224-8

Abstract: the concrete industry has adopted a number of methods to achieve this goal by replacement of waste glassTherefore, replacement of waste glass with fine aggregate in SCC should deeply be investigated comparedThe aim of the present study is to investigate the effect of glass replacement with fine aggregate onshown to decrease when the content of waste glass is increased.be produced SCC with waste glass as fine aggregate in a standard manner.

Keywords： Self Compacting Concrete (SCC)     recycle glass     fine aggregate     fresh and hardened properties    

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Numerical analysis of rotating stall characteristics in vaneless diffuser with large width-radius ratio

GAO Chuang, GU Chuangang, WANG Tong, DAI Zhengyuan

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 457-460 doi: 10.1007/s11708-008-0071-9

Abstract: neglected and inlet jet-wake velocity patterns are prescribed, was applied to simulate one vaneless diffuserThe impact of diffuser length, impeller blade number, etc. on the rotating stall was analyzed.

Keywords： Comparison     Computational     two-dimensional     influence     different mechanism    

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Review of small aspheric glass lens molding technologies

Shaohui YIN,Hongpeng JIA,Guanhua ZHANG,Fengjun CHEN,Kejun ZHU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 66-76 doi: 10.1007/s11465-017-0417-2

Abstract: As an advanced manufacturing technology, the glass lens molding process has been recognized as a low-costHowever, the residual stress and profile deviation of the glass lens are greatly affected by variouskey technologies for glass lens molding, including glass and mold-die material forming, mold-die machiningThese key technical factors, which affect the quality of the glass lens molding process, are systematicallythe existing technical bottlenecks and problems, as well as to predict the potential applicability of glass

Keywords： aspheric glass lens     mold-die manufacturing     lens molding     molding process simulation    

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Title Author Date Type Operation

Piezoelectric diffuser/nozzle micropump with double pump chambers

WANG Wei, ZHANG Ying, TIAN Li, CHEN Xiaojie, LIU Xiaowei

Journal Article

Progress of three-dimensional macroporous bioactive glass for bone regeneration

Lijun JI, Yunfeng SI, Ailing LI, Wenjun WANG, Dong QIU, Aiping ZHU

Journal Article

The electrostatic-alloy bonding technique used in MEMS

WANG Wei, CHEN Wei-ping

Journal Article

Experimental and CFD analysis of nozzle position of subsonic ejector

Xilai ZHANG, Shiping JIN, Suyi HUANG, Guoqing TIAN

Journal Article

Depth of cut models for multipass abrasive waterjet cutting of alumina ceramics with nozzle oscillation

Jun WANG

Journal Article

Investigation into the influence of diffuser stagger angles on the flow field and performance of a centrifugal

XI Guang, DING Haiping, YUAN Minjian, ZHANG Chunmei, ZHOU Li

Journal Article

Influence of nozzle height to width ratio on ignition and NO

Liutao SUN, Yonghong YAN, Rui SUN, Zhengkang PENG, Chunli XING, Jiangquan WU

Journal Article

An investigation into the properties of ternary and binary cement pastes containing glass powder

Marcelo Frota BAZHUNI, Mahsa KAMALI, Ali GHAHREMANINEZHAD

Journal Article

Plasma enhanced chemical vapor deposition of excellent a-Si:H passivation layers for a-Si:H/c-Si heterojunction

Lei ZHAO,Wenbin ZHANG,Jingwei CHEN,Hongwei DIAO,Qi WANG,Wenjing WANG

Journal Article

Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Journal Article

Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Journal Article

Influence of damages on static behavior of single-layer cable net supported glass curtain wall: full-scale

Gang SHI, Yongjiu SHI, Yuanqing WANG, Yongzhi ZUO, Xiaohao SHI, Zaoyang GUO,

Journal Article

Recycled glass replacement as fine aggregate in self-compacting concrete

Yasser SHARIFI, Mahmoud HOUSHIAR, Behnam AGHEBATI

Journal Article

Numerical analysis of rotating stall characteristics in vaneless diffuser with large width-radius ratio

GAO Chuang, GU Chuangang, WANG Tong, DAI Zhengyuan

Journal Article

Review of small aspheric glass lens molding technologies

Shaohui YIN,Hongpeng JIA,Guanhua ZHANG,Fengjun CHEN,Kejun ZHU

Journal Article