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3,281 Newest Publications about the topic microscopes

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Nobel for microscopy that reveals inner world of cells

16-10-2014 | Van Noorden, Richard;, Nature, 2014

Nobel for microscopy that reveals inner world of cells Nature 514, 7522 (2014). http://www.nature.com/doifinder/10.1038/nature.2014.16097 Author: Richard Van Noorden Three scientists used fluorescent molecules to defy the limits of ...

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Deformation Behavior of the Percolating Intermetallic Microstructure of High Pressure Die Cast AZ91 Alloy

13-09-2013 | Bao Zhang, Anumalasetty V. Nagasekhar, Tharmalingam Sivarupan, Carlos H. Caceres, Advanced Engineering Materials, 2013

The intermetallic microstructure in two representative regions of the cross section, the corner and the core, of a cast‐to‐shape tensile specimen was studied. Available 3D data of the intermetallic, obtained with focused dual ion beam tomography, were incorporated into a finite element code to ...

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A new method to improve the stability, tensile strength, and heat resistant properties of shape‐memory epoxy resins: Two‐stages curing

13-09-2013 | He Sun, Yuyan Liu, Huifeng Tan, Xingwen Du, Journal of Applied Polymer Science, 2013

ABSTRACT In this article, we design a new thermal curing method: two‐stage curing. The purpose of using this approach is to maintain the excellent shape‐memory property of epoxy resin system after first stage curing, and the material can be folded in small size to storage or transportation and ...

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Microstructural evolution and self‐healing mechanism of a 2D C/SiC‐BCx composite under constant load in static wet oxygen and dynamic combustion atmosphere

12-09-2013 | Y. S. Liu, J. Men, L. T. Zhang, L. F. Cheng, W. B. Yang, W. H. Zhang, Materials and Corrosion, 2013

A 2D C/SiC‐BCx composite was tested under static load in both wet oxygen and dynamic combustion atmospheres. The microstructural evolution and self‐healing mechanisms of the composites were investigated by a scanning electron microscope. The results indicated that the multi‐scale deflection of ...

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The effect of quench transfer time on microstructure and localized corrosion behavior of 7050‐T6 Al alloy

12-09-2013 | F. X. Song, X. M. Zhang, S. D. Liu, Q. Tan, D. F. Li, Materials and Corrosion, 2013

The microstructure and localized corrosion behavior of the 7050‐T6 Al alloys treated with different quench transfer time were investigated. Optical microscope observations show that the volume fraction of the recrystallized grains increases slightly with prolonging quench transfer time. ...

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Potassium hydroxide polishing of nanoscale deep reactive-ion etched ultrahigh aspect ratio gratings

12-09-2013 | Alexander Bruccoleri, Dong Guan, Pran Mukherjee, Ralf K. Heilmann, Mark L. Schattenburg et al., Journal of Vacuum Science & Technology B, 2013

A fabrication process has been developed to chemically polish the sidewalls of 200 nm-pitch gratings via potassium hydroxide (KOH) etching following the Bosch deep reactive-ion etching (DRIE) process. Previous KOH polishing experiments focused on micron scale features. This work is the first ...

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In situ WAXS/SAXS structural evolution study during uniaxial stretching of poly(ethylene terephthalate) nanocomposites in the solid state: Poly(ethylene terephthalate)/titanium dioxide and poly(ethylene terephthalate)/silica nanocomposites

12-09-2013 | Lyudmil V. Todorov, Carla I. Martins, Júlio C. Viana, Journal of Applied Polymer Science, 2013

ABSTRACT This work reports an in situ WAXS and SAXS investigation, under X‐ray synchrotron source radiation, on the structural evolution during solid‐state uniaxial deformation of poly(ethylene terephthalate) (PET) nanocomposites with 0.3 wt % of 3D nanoparticles [nanotitanium dioxide (TiO2) ...

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Facile synthesis and catalytic activity of well‐defined amphiphilic block copolymers based on N‐vinylimidazolium

10-09-2013 | Chang Peng, Kai Huang, Mingsong Han, Wei Meng, Yuanqin Xiong, Weijian Xu, Polymers for Advanced Technologies, 2013

Well‐defined amphiphilic block copolymers, poly(styrene)‐b‐poly(N‐vinylimidazole) (PS‐b‐PVim), were successfully synthesized by macromolecular design via interchange of the xanthates/reversible addition–fragmentation chain transfer (RAFT) polymerization. The structure of the copolymer based on ...

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Effect of Permeable Biofilm on Micro- And Macro-Scale Flow and Transport in Bioclogged Pores

10-09-2013 | Wen Deng; M. Bayani Cardenas; Matthew F. Kirk; Susan J. Altman; Philip C. Bennett, Environmental Science & Technology, 2013

Simulations of coupled flow around and inside biofilms in pores were conducted to study the effect of porous biofilm on micro- and macro-scale flow and transport. The simulations solved the Navier–Stokes equations coupled with the Brinkman equation representing flow in the pore space and biofilm, ...

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Mechanism Study of stabilization of double-base propellants by using zeolite stabilizers (Nano- and micro-clinoptilolite)

09-09-2013 | Author(s): M.A. Zayed , Salah E. M. El-Begawy , Hossam E.S. Hassan, Arabian Journal of Chemistry, 2013

Publication date: Available online 4 September 2013 Source:Arabian Journal of Chemistry Author(s): M.A. Zayed , Salah E. M. El-Begawy , Hossam E.S. Hassan The mechanism of stabilization for double-base rocket propellants (DBPs) using inorganic stabilizer (Nano- and micro-clinoptilolite) ...

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