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نتایج جستجو برای nanocomposite

تعداد نتایج: 5123  
2014
Christine M. Andres, Jian Zhu, Terry Shyu, Connor Flynn, Nicholas A. Kotov,

Nature provides a vast array of solid materials that repeatedly and reversibly transform in shape in response to environmental variations. This property is essential, for example, for new energy-saving technologies, efficient collection of solar radiation, and thermal management. Here we report a similar shape-morphing mechanism using differential swelling of hydrophilic polyelectrolyte multila...

2016
Kwi-Il Park, Chang Kyu Jeong, Na Kyung Kim, Keon Jae Lee,

Piezoelectric energy conversion that generate electric energy from ambient mechanical and vibrational movements is promising energy harvesting technology because it can use more accessible energy resources than other renewable natural energy. In particular, flexible and stretchable piezoelectric energy harvesters which can harvest the tiny biomechanical motions inside human body into electricit...

2017
Masoud Salavati-Niasari, Davood Ghanbari,

2006
Stacey Bent, James S. Harris, Jeffrey King,

This project is a fundamental study into the development of low-cost, thin film solar cells. It explores the fabrication of semiconductor nanocomposites for photovoltaics using nanostructured inorganic materials and atomic layer deposition (ALD). In thin film technologies, there exists a common problem with conversion efficiency due to poor materials quality: the photogenerated electrons and ho...

Journal: :Nano letters 2012
Tzahi Cohen-Karni, Kyung Jae Jeong, Jonathan H Tsui, Gally Reznor, Mirela Mustata, Meni Wanunu, Adam Graham, Carolyn Marks, David C Bell, Robert Langer, Daniel S Kohane,

Cell-biomaterial interactions can be controlled by modifying the surface chemistry or nanotopography of the material, to induce cell proliferation and differentiation if desired. Here we combine both approaches in forming silk nanofibers (SNFs) containing gold nanoparticles (AuNPs) and subsequently chemically modifying the fibers. Silk fibroin mixed with gold seed nanoparticles was electrospun ...

2017
Dibakar Bhattacharyya, Vasile Smuleac, Rajender S. Varma, Subhas K. Sikdar,

2017
Horst Hintze-Bruening, Fabrice Leroux,

Journal: :Biological & pharmaceutical bulletin 2013
Masanori Kikuchi,

Our group has succeeded to synthesize material with bone-like nanostructure and bone-like inorganic and organic composition via self-organization mechanism between them using simultaneous titration method under controlled pH and temperature. The hydroxyapatite/collagen (HAp/Col) bone-like nanocomposite completely incorporated into bone remodeling process to be substituted by new bone. Cells cul...

Journal: :Macromolecular rapid communications 2011
Akhilesh K Gaharwar, Patrick J Schexnailder, Avinash Dundigalla, James D White, Cristina R Matos-Pérez, Joshua L Cloud, Soenke Seifert, Jonathan J Wilker, Gudrun Schmidt,

Here, we show that a poly(ethylene oxide) polymer can be physically cross-linked with silicate nanoparticles (Laponite) to yield highly extensible, bio-nanocomposite fibers that, upon pulling, stretch to extreme lengths and crystallize polymer chains. We find that both, nanometer structures and mechanical properties of the fibers respond to mechanical deformation by exhibiting strain-induced cr...

Journal: :Biotechnology and bioengineering 2014
Akhilesh K Gaharwar, Nicholas A Peppas, Ali Khademhosseini,

Hydrogels mimic native tissue microenvironment due to their porous and hydrated molecular structure. An emerging approach to reinforce polymeric hydrogels and to include multiple functionalities focuses on incorporating nanoparticles within the hydrogel network. A wide range of nanoparticles, such as carbon-based, polymeric, ceramic, and metallic nanomaterials can be integrated within the hydro...