نتایج جستجو برای: carbon nanospheres

تعداد نتایج: 283773  

Journal: :Langmuir : the ACS journal of surfaces and colloids 2008
Ting-Yu Liu Shang-Hsiu Hu Kun-Ho Liu Ren-Shiuan Shaiu Dean-Mo Liu San-Yuan Chen

Novel dual-functional nanospheres composed of magnetic iron oxide nanoparticles embedded in a thermo-sensitive Pluronic F127 (F127) matrix were successfully synthesized by an in situ coprecipitation process. The nanospheres were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. Experimental observations indicated that...

2016
Bálint Náfrádi Mohammad Choucair Klaus-Peter Dinse László Forró

The time-window for processing electron spin information (spintronics) in solid-state quantum electronic devices is determined by the spin-lattice and spin-spin relaxation times of electrons. Minimizing the effects of spin-orbit coupling and the local magnetic contributions of neighbouring atoms on spin-lattice and spin-spin relaxation times at room temperature remain substantial challenges to ...

Journal: :Advanced Materials 2022

CO2 Electroreduction It remains challenging to increase the energy efficiency while maintaining long durability of catalysts for electroreduction CO. In article number 2204637, Xin Wang, Ming Feng, Aiping Yu, Zhongwei Chen, and co-workers demonstrate a dual-scale delicate design non-noble Sn–ZnO active interface inserted into nanopores high-surface-area carbon nanospheres, through d-bandwidth t...

2012
Mohsen Tafaghodi Seyed Abolghasem Sajadi Tabassi Mahmoud Reza Jaafari

In induction of systemic and mucosal immunity, particulate antigens are more effective than soluble antigens possibly because they are more efficiently endocytosed by mucosal-associated lymphoid tissue (MALT) M cells. In this study, we determined the systemic and mucosal immune responses in rabbits following intranasal immunization of tetanus toxoid TT and CpGODN encapsulated within PLGA nanosp...

2010
Sunil Mahor Estelle Collin Biraja Dash Abhay Pandit

Introduction: Hyaluronic acid (HA) is an anionic biopolymer composed of alternating disaccharide units of D-glucuronic acid and Nacetyl-D-glucosamine with (14)interglycosidic linkage [1]. It is the only nonsulfated glycosaminoglycan (GAG) that is abundant in the synovial fluid and extracellular matrix (ECM) [1-2]. The over all goal of this study is to fabricate and characterize nanospheres ba...

Journal: :Materials science & engineering. C, Materials for biological applications 2013
Akhilesh K Gaharwar Christian Rivera Chia-Jung Wu Burke K Chan Gudrun Schmidt

Photopolymerized hydrogels are extensively investigated for various tissue engineering applications, primarily due to their ability to form hydrogels in a minimally invasive manner. Although photocrosslinkable hydrogels provide necessary biological and chemical characteristics to mimic cellular microenvironments, they often lack sufficient mechanical properties. Recently, nanocomposite approach...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2010
Adham Ahmed Rob Clowes Elizabeth Willneff Peter Myers Haifei Zhang

Porous nanospheres have a wide range of applications such as in catalysis, separation and controlled delivery. Among these nanospheres, syntheses and applications of porous silica nanospheres have been investigated extensively. Uniform porous silica nanospheres can be synthesized using a modified Stöber method. In the present study, porous silica spheres were prepared in the pre-formed emulsion...

Journal: :Analytical chemistry 2002
Jens M Kümer Otto S Wolfbeis Ingo Klimant

Following a study on the feasibility of resonance energy transfer (RET) from carboxylated nanospheres with an incorporated phosphorescent donor to a cationic polyelectrolyte/acceptor aggregate on their surface, a novel scheme for homogeneous assays is presented that is based on RET from phosphorescent biotinylated nanospheres to fluorescently labeled streptavidin (SA). The phosphorescent nanosp...

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