نتایج جستجو برای: electrostatic self

تعداد نتایج: 549056  

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1390

objective: the objective of this study was to investigate the invitro fluoride release of four new self-adhesive resin cements; set (sdi, australia), breeze (pentron, usa), embrace wetbond (pulpdent, usa), g-cem (gc, japan) and to assess the bonding performance of these self-adhesive resin cements for bonding of orthodontic brackets. materials and methods: for fluoride release experiment, six ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1393

according to research, academic self-concept and academic achievement are mutually interdependent. in the present study, the aim was to determine the relationship between the academic self-concept and the academic achievement of students in english as a foreign language and general subjects. the participants were 320 students studying in 4th grade of high school in three cities of noor, nowshah...

Journal: :Journal of materials chemistry. A, Materials for energy and sustainability 2022

Correction for ‘Rationally designed 1D Ag@AgVO 3 nanowire/graphene/protonated g-C N 4 nanosheet heterojunctions enhanced photocatalysis via electrostatic self-assembly and photochemical reduction methods’ by Shouwei Zhang et al. , J. Mater. Chem. A 2015, 10119–10126, https://doi.org/10.1039/C5TA00635J.

Journal: :Nanoscale 2014
Bezuayehu Teshome Stefan Facsko Adrian Keller

The controlled positioning of DNA nanostructures on technologically relevant surfaces represents a major goal along the route toward the full-scale integration of DNA-based materials into nanoelectronic and sensor devices. Previous attempts to arrange DNA nanostructures into defined arrays mostly relied on top-down lithographic patterning techniques combined with chemical surface functionalizat...

Journal: :Nanoscale 2013
Tiago C Reis Ilídio J Correia Ana Aguiar-Ricardo

The rational design of three-dimensional electrospun constructs (3DECs) can lead to striking topographies and tailored shapes of electrospun materials. This new generation of materials is suppressing some of the current limitations of the usual 2D non-woven electrospun fiber mats, such as small pore sizes or only flat shaped constructs. Herein, we pursued an explanation for the self-assembly of...

Journal: :Nature nanotechnology 2011
Yunsheng Xia Trung Dac Nguyen Ming Yang Byeongdu Lee Aaron Santos Paul Podsiadlo Zhiyong Tang Sharon C Glotzer Nicholas A Kotov

Nanoparticles are known to self-assemble into larger structures through growth processes that typically occur continuously and depend on the uniformity of the individual nanoparticles. Here, we show that inorganic nanoparticles with non-uniform size distributions can spontaneously assemble into uniformly sized supraparticles with core-shell morphologies. This self-limiting growth process is gov...

2011
Yavuz S. Dagdas Aysegul Tombuloglu Ayse B. Tekinay Mustafa O. Guler

Molecular self-assembly is a powerful technique for developing novel nanostructures by using noncovalent interactions such as hydrogen bonding, hydrophobic, electrostatic, metal–ligand, p–p and van der Waals interactions. These interactions are highly dynamic and are often delicate due to their relatively weak nature. However, a sufficient number of these weak interactions can yield a stable as...

Journal: :Science 2004
Xiang Yang Kong Yong Ding Rusen Yang Zhong Lin Wang

Freestanding single-crystal complete nanorings of zinc oxide were formed via a spontaneous self-coiling process during the growth of polar nanobelts. The nanoring appeared to be initiated by circular folding of a nanobelt, caused by long-range electrostatic interaction. Coaxial and uniradial loop-by-loop winding of the nanobelt formed a complete ring. Short-range chemical bonding among the loop...

Journal: :physical chemistry research 2013
mehdi esrafili mohammad solimannejad

a quantum chemical investigation was carried out to study the properties of intermolecular f•••f, br•••br and br•••o interactions in crystalline 1-bromo-2,3,5,6-tetrafluoro-nitrobenzene (bfnb). this system was selected to mimic the halogen-halogen as well as halogen bonding interactions found within crystal structures as well as within biological systems. we found that fluorine atoms have weak ...

Journal: :Chemical communications 2009
Bogumił Kuberski Agnieszka Szumna

Phenylalanine substituted resorcinarenes form self-complementary dimeric homo- or heterochiral capsules based on deeply buried electrostatic interactions (salt bridges) with numerous polar and non-polar functionalities in their interiors available for interactions with encapsulated polar molecules, as proved by X-ray analysis and diffusion NMR spectroscopy.

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