نتایج جستجو برای: crystallinity

تعداد نتایج: 6032  

Journal: :IEEE Transactions on Dielectrics and Electrical Insulation 2017

2012
Maria Alejandra BERTUZZI Juan Carlos GOTTIFREDI Margarita ARMADA

In the present study, a better knowledge of the influence of plasticizer content, storage relative humidity and film thickness on the mechanical properties of high amylose corn starch based films gelatinized at low temperature, is presented. The mechanical properties, tensile strength and percentage of elongation at break of high amylose corn starch films plasticized with glycerol were evaluate...

2014
M Yuste R Escobar Galindo I Caretti R Torres O Sánchez

7 A systematic study for the optimization of the deposition process of ZnO thin films grown by 8 DC magnetron sputtering at room temperature was carried out using different oxygen partial 9 pressures and deposition times. We have established a correlation between the oxygen partial 10 pressure, the chemical composition and the crystalline structure of the films. 11 Stoichiometric and highly ori...

Journal: :Nanoscale 2013
Mari-Cruz García-Gutiérrez Amelia Linares Ignacio Martín-Fabiani Jaime J Hernández Michelina Soccio Daniel R Rueda Tiberio A Ezquerra Michael Reynolds

The successful development of ferroelectric polymer devices depends on the effective fabrication of polar ferroelectric crystalline nanostructures. We demonstrate, by scanning X-ray microdiffraction using synchrotron light, the heterogeneous character of high aspect ratio one-dimensional nanoarrays of poly(vinylidene fluoride-co-trifluoroethylene) copolymers supported by a residual polymer film...

2018
Michael J. Newman Emily M. Speller Jérémy Barbé Joel Luke Meng Li Zhe Li Zhao-Kui Wang Sagar M. Jain Ji-Seon Kim Harrison Ka Hin Lee Wing Chung Tsoi

Solution-processed organic small molecule solar cells (SMSCs) have achieved efficiency over 11%. However, very few studies have focused on their stability under illumination and the origin of the degradation during the so-called burn-in period. Here, we studied the burn-in period of a solution-processed SMSC using benzodithiophene terthiophene rhodamine:[6,6]-phenyl C71 butyric acid methyl este...

Journal: :Analytical chemistry 2009
Gang Hu John A Heitmann Orlando J Rojas

The development of more efficient utilization of biomass has received increased attention in recent years. Cellulases play an important role in processing biomass through advanced biotechnological approaches. Both the development and the application of cellulases require an understanding of the activities of these enzymes. A new method to determine the activity of cellulase has been developed u...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
Darby M Harris Kendall Corbin Tuo Wang Ryan Gutierrez Ana L Bertolo Carloalberto Petti Detlef-M Smilgies José Manuel Estevez Dario Bonetta Breeanna R Urbanowicz David W Ehrhardt Chris R Somerville Jocelyn K C Rose Mei Hong Seth Debolt

The mechanisms underlying the biosynthesis of cellulose in plants are complex and still poorly understood. A central question concerns the mechanism of microfibril structure and how this is linked to the catalytic polymerization action of cellulose synthase (CESA). Furthermore, it remains unclear whether modification of cellulose microfibril structure can be achieved genetically, which could be...

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