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Bicontinuous porous membranes with micro-nano composite structure using a facile atomization-assisted

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1268-1280 doi: 10.1007/s11705-022-2143-5

Abstract: The micro-nano composite structure can endow separation membranes with special surface properties, butBy using this method, a bicontinuous porous microfiltration membrane with robust micro-nano compositestructure was obtained via commercially available polymers of polyacrylonitrile and polyvinylpyrrolidoneThe formation mechanism of the micro-nano composite structure was proposed.hydrogen bonding between polyacrylonitrile and polyvinylpyrrolidone molecules should have resulted in the nano-protrusions

Keywords: atomization     nonsolvent induced phase separation     bicontinuous porous structure     micro-nano compositestructure     oil-water separation    

Recent advances in micro- and nano-machining technologies

Shang GAO, Han HUANG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 18-32 doi: 10.1007/s11465-017-0410-9

Abstract: The miniaturization of devices in different fields requires production of micro- and nano-scale componentsThis paper reviewed the recent advances in micro- and nano-machining technologies, including micro-cutting, micro-electrical-discharge machining, laser micro-machining, and focused ion beam machining.

Keywords: micro machining     cutting     electro discharge machining (EDM)     laser machining     focused ion beam (FIB)    

Recent advances in ultrasonic-assisted machining for the fabrication of micro/nano-textured surfaces

Shaolin XU,Tsunemoto KURIYAGAWA,Keita SHIMADA,Masayoshi MIZUTANI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 33-45 doi: 10.1007/s11465-017-0422-5

Abstract: this paper, the state of art of ultrasonic-assisted machining technologies used for fabrication of micro/nano-textured surfaces is reviewed.Finally, the challenges in using the RUT method to fabricate micro/nano-textured surfaces are discussed

Keywords: ultrasonic-assisted machining     textured surface     micro/nano-structures     functional performance    

Fabrication of micro/nano-structures by electrohydrodynamic jet technique

Dazhi WANG, Xiaojun ZHAO, Yigao LIN, Tongqun REN, Junsheng LIANG, Chong LIU, Liding WANG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 477-489 doi: 10.1007/s11465-017-0461-y

Abstract:

Electrohydrodynamic jet (E-Jet) is an approach to the fabrication of micro/nano-structures by theincludes E-Jet deposition and E-Jet printing, has a wide range of applications in the fabrication of micro/nano-structures for micro/nano-electromechanical system devices.This technique is also considered a micro/nano-fabrication method with a great potential for commercial

Keywords: electrohydrodynamic jet deposition     electrohydrodynamic jet printing     micro/nano-structures     film    

Pore structure of cementitious material enhanced by graphitic nanomaterial: a critical review

S.A. GHAHARI, E. GHAFARI, L. ASSI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 137-147 doi: 10.1007/s11709-017-0431-9

Abstract: Carbon nano tubes (CNT) has been introduced as an efficient nanomaterial in order to improve the mechanicalThis paper combines a critical review on the effect of CNT on the pore and microstructure of cement compositethis scope, this review paper involves analyzing the effect of CNT on the microstructure and the pore structure

Keywords: carbon nano tubes     microstructure     porosity     mercury intrusion porosimetry     cement composite    

Strengthening of polysulfone membranes using hybrid mixtures of micro- and nano-scale modifiers

Peyman P. Selakjani, Majid Peyravi, Mohsen Jahanshahi, Hamzeh Hoseinpour, Ali S. Rad, Soodabeh Khalili

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 174-183 doi: 10.1007/s11705-017-1670-y

Abstract: Polysulfone (PSf) membranes were modified by either a new organic modifier (sulfonated poly(ether sulfide sulfone), SPESS) or a traditional modifier (rice hulk). These membranes were further reinforced with either multi-walled carbon nanotubes (MWCNTs) or silica nanoparticles. Having a dye rejection of 98.46%, the reinforced membranes increased more than 50% in strength but no change in solution flux was observed. The morphological and roughness studies were conducted using scanning electron microscopy and atomic force microscopy. Moreover, the PSF membranes were also characterized by differential scanning calorimetry. Modifying the membranes with organic modifier or nanofiller increases the glass transition temperature ( ). The highest and strength were observed for the PSf-SPESS-MWCNT membrane. SPESS decreases surface roughness but MWCNT increases roughness on the nanoscale. All membranes show a bimodal pore size distribution, whereas the PSf-SPESS-MWCNT membrane exhibits a relatively uniform distribution of macroscopic and microscopic pores.

Keywords: polysulfone membrane     mechanical properties     micro- and nano-modification     binary and ternary system     dye    

Optimizing the compressive strength of concrete containing micro-silica, nano-silica, and polypropylene

Fatemeh ZAHIRI, Hamid ESKANDARI-NADDAF

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 821-830 doi: 10.1007/s11709-019-0518-6

Abstract: Many studies have evaluated the effects of additives such as nano-silica (NS), micro-silica (MS) and

Keywords: mixture method     compressive strength     nano-silica     micro-silica     polypropylene fibers    

Antibacterial and anti-flaming PA6 composite with metathetically prepared nano AgCl@BaSO

Wei Zhang, Boren Xu, Caihong Gong, Chunwang Yi, Shen Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 340-350 doi: 10.1007/s11705-020-1942-9

Abstract: In this study, a facile and environmentally friendly method with low energy consumption for preparing nanoscale AgCl and BaSO co-precipitates (AgCl@BaSO co-precipitates) was developed based on the metathetical reaction. Then, the dried co-precipitates were melt-compounded with polyamide 6 (PA6) resins at a specified mass ratio in a twin-screw extruder. The results demonstrated that in the absence of any coating agent or carrier, the nanoparticles of AgCl@BaSO co-precipitates were homogeneously dispersed in the PA6 matrix. Further analysis showed that after the addition of AgCl@BaSO co-precipitates, the antibacterial performance, along with the flame-retardance and anti-dripping characteristics of PA6, was enhanced significantly. In addition, the PA6 composites possessed high spinnability in producing pre-oriented yarn.

Keywords: nano AgCl@BaSO4 co-precipitates     antibacterial     flame resistance     PA6 composite     PA6 yarn    

Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2037-2049 doi: 10.1007/s11705-023-2358-0

Abstract: Herein, we successfully prepared magnetic KIT-6 nano-composite and its amino derivatives by bearing acid-resistant

Keywords: magnetic nanoparticle     3D mesoporous silica     amino functionalization     adsorption of U(VI)     acid resistance    

Nano-copper ions assembled cellulose-based composite with antibacterial activity for biodegradable personal

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1544-1554 doi: 10.1007/s11705-022-2288-2

Abstract: In this study, nano-copper ions assembled cotton fabric used in face masks to impart antibacterial activityfabric was modified by sodium chloroacetate after its mercerization, and assembled with bactericidal nano-copperaureus and Escherichia coli because the gaps between fibers in the cotton fabric allow the nano-copperThis green, economical, facile, and scalable process of depositing nano-copper ions onto modified cotton

Keywords: cellulose-based     nanocomposite     biodegradable antibacterial fabric     nano-copper ions     face masks    

Design, development, and performance of an ammonia self-managed vaporization propulsion system for micro-nano Regular Article

Shu-jian Sun, Tao Meng, Zhong-he Jin,sunshujian@zju.edu.cn,mengtao@zju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 11,   Pages 1516-1529 doi: 10.1631/FITEE.1800068

Abstract: An ammonia propulsion (ASVP) system for s is presented. Compared with a normal cold gas or liquefied gas propulsion system, a multiplex parallel sieve type vaporizer and related vaporization control methods are put forward to achieve of liquefied propellant. The problems of high vaporization latent heat and incomplete vaporization of are solved, so that the ASVP system takes great advantage of high theoretical specific impulse and high propellant storage density. Furthermore, the ASVP operation procedure and its physical chemistry theories and mathematical models are thoroughly analyzed. An optimal strategy of thrust control is proposed with consideration of thrust performance and energy efficiency. The ground tests indicate that the ASVP system weighs 1.8 kg (with 0.34-kg propellant) and reaches a specific impulse of more than 100 s, while the power consumption is less than 10 W. The ASVP system meets multiple requirements including high specific impulse, low power consumption, easy fabrication, and uniform adjustable thrust output, and thus is suitable for s.

Keywords: 自主汽化管理;液氨;毫牛量级推进技术;微推力;高精度轨道控制;微纳卫星    

Influence of short chain ceramides and lipophilic penetration enhancers on the nano-structure of stratum

Annett SCHROETER, Tanja ENGELBRECHT, Reinhard H. H. NEUBERT

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 29-36 doi: 10.1007/s11705-013-1302-0

Abstract: Oriented stratum corneum model lipid membranes were used to study the influence of the short chain ceramides (CER)[NP] and [AP] as well as the impact of the lipophilic penetration enhancer molecules oleic acid (OA) and isopropyl myristate (IPM) on the lipid nanostructure. The influence of the enhancer molecules were studied using specifically deuterated OA and IPM and neutron diffraction. H NMR spectroscopy was used to study the impact of the ceramides’ degree of order within the stratum corneum model lipid membranes. It was found that CER[NP] forms two very stable phases with high resistance against temperature increase. Phase B showed unusual hydration behavior as no water uptake of this phase was observed. The H NMR spectroscopic measurements showed that CER[NP] based ternary model system had a higher state of lamellar order in comparison to CER[AP] based lipid matrix. The studies confirmed that the short chain ceramides, particularly CER[NP], have a very high impact on the integrity of the Stratum corneum lipid bilayers. The penetration enhancer OA has not influenced the repeat distance of the model membrane based on CER[AP], and was not able to induce a phase separation in the investigated lipid matrix. However, a disorder and a fluidisation of the model membranes were observed when OA was incorporated. IPM showed the same effect but two phases (assigned as phase A and B) appeared, when IPM was used as penetration enhancer and incorporated into the model membrane. Furthermore, two arrangements of IPM were identified in phase A using deuterated IPM. A model of the nanostructure of the Stratum corneum lipid membranes is presented.

Keywords: nano-structure of the stratum corneum     ceramide     penetration enhancer     model membrane     neutron diffraction    

Editorial for the Special Issue on Micro and Nano Manipulation and Characterization

Yu Sun, Sergej Fatikow, Xinyu Liu

Engineering 2023, Volume 24, Issue 5,   Pages 1-2 doi: 10.1016/j.eng.2023.04.006

Micro - blind mesh thermal control study and simulation of nano-satellite

Yang Juan,Li Yunze,Wang Jun

Strategic Study of CAE 2008, Volume 10, Issue 7,   Pages 169-172

Abstract:

The limits of nano-satellite's volume and quality may cause a highMicro-blind mesh can resolve this problem properly.The intelligent control strategy of micro-blind mesh' s drive is the key technology.A dynamic characteristics model of the spherical nano-satellite was established.Based on the model,a

Keywords: nano-satellite     micro-blind mesh     fuzzy PI controller     simulation    

Preparation and photocatalytic kinetics of nano-ZnO powders by precipitation stripping process

ZHANG Dongxiang, XUE Min, XU Hang, XU Wenguo, TARASOV V

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 319-324 doi: 10.1007/s11705-008-0051-y

Abstract: The results show that some zinc oxide powders were micro-multipore materials with hexagonal crystal.

Keywords: 2-ethylhexyl     micro-multipore     Photo-Layer     hexagonal     methylene    

Title Author Date Type Operation

Bicontinuous porous membranes with micro-nano composite structure using a facile atomization-assisted

Journal Article

Recent advances in micro- and nano-machining technologies

Shang GAO, Han HUANG

Journal Article

Recent advances in ultrasonic-assisted machining for the fabrication of micro/nano-textured surfaces

Shaolin XU,Tsunemoto KURIYAGAWA,Keita SHIMADA,Masayoshi MIZUTANI

Journal Article

Fabrication of micro/nano-structures by electrohydrodynamic jet technique

Dazhi WANG, Xiaojun ZHAO, Yigao LIN, Tongqun REN, Junsheng LIANG, Chong LIU, Liding WANG

Journal Article

Pore structure of cementitious material enhanced by graphitic nanomaterial: a critical review

S.A. GHAHARI, E. GHAFARI, L. ASSI

Journal Article

Strengthening of polysulfone membranes using hybrid mixtures of micro- and nano-scale modifiers

Peyman P. Selakjani, Majid Peyravi, Mohsen Jahanshahi, Hamzeh Hoseinpour, Ali S. Rad, Soodabeh Khalili

Journal Article

Optimizing the compressive strength of concrete containing micro-silica, nano-silica, and polypropylene

Fatemeh ZAHIRI, Hamid ESKANDARI-NADDAF

Journal Article

Antibacterial and anti-flaming PA6 composite with metathetically prepared nano AgCl@BaSO

Wei Zhang, Boren Xu, Caihong Gong, Chunwang Yi, Shen Zhang

Journal Article

Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Journal Article

Nano-copper ions assembled cellulose-based composite with antibacterial activity for biodegradable personal

Journal Article

Design, development, and performance of an ammonia self-managed vaporization propulsion system for micro-nano

Shu-jian Sun, Tao Meng, Zhong-he Jin,sunshujian@zju.edu.cn,mengtao@zju.edu.cn

Journal Article

Influence of short chain ceramides and lipophilic penetration enhancers on the nano-structure of stratum

Annett SCHROETER, Tanja ENGELBRECHT, Reinhard H. H. NEUBERT

Journal Article

Editorial for the Special Issue on Micro and Nano Manipulation and Characterization

Yu Sun, Sergej Fatikow, Xinyu Liu

Journal Article

Micro - blind mesh thermal control study and simulation of nano-satellite

Yang Juan,Li Yunze,Wang Jun

Journal Article

Preparation and photocatalytic kinetics of nano-ZnO powders by precipitation stripping process

ZHANG Dongxiang, XUE Min, XU Hang, XU Wenguo, TARASOV V

Journal Article