نتایج جستجو برای: surface functionalized

تعداد نتایج: 652478  

Journal: :Biophysical journal 2000
Y F Dufrêne

A new method is described for characterizing the physicochemical properties of native microbial cells by using atomic force microscopy (AFM) with chemically functionalized probes. Adhesion forces were measured, under deionized water, between probes and model substrata functionalized with alkanethiol self-assembled monolayers terminated with OH and CH(3) groups. These were found to be 6 +/- 2 nN...

2017
Cristian Petcu Violeta Purcar Cătălin-Ilie Spătaru Elvira Alexandrescu Raluca Şomoghi Bogdan Trică Sabina Georgiana Niţu Denis Mihaela Panaitescu Dan Donescu Maria-Luiza Jecu

Ultra-hydrophobic bilayer coatings on a glass surface were fabricated by sol-gel process using hexadecyltrimethoxysilane (C16TMS) and tetramethoxysilane (TMOS) (1:4 molar ratio) as precursors. After coating, silica nanoparticles (SiO₂ NPs) functionalized with different mono-alkoxy derivatives (methoxytrimethylsilane, TMeMS; ethoxydimethylvinylsilane, DMeVES; ethoxydimethylphenylsilane, DMePhES;...

Journal: :Biomaterials 2012
Ana V Chavez-Santoscoy Rajarshi Roychoudhury Nicola L B Pohl Michael J Wannemuehler Balaji Narasimhan Amanda E Ramer-Tait

C-type lectin receptors (CLRs) offer unique advantages for tailoring immune responses. Engagement of CLRs regulates antigen presenting cell (APC) activation and promotes delivery of antigens to specific intracellular compartments inside APCs for efficient processing and presentation. In these studies, we have designed an approach for targeted antigen delivery by decorating the surface of polyan...

Journal: :Methods and applications in fluorescence 2015
Marco Frasconi Viviana Maffeis Juergen Bartelmess Luis Echegoyen Silvia Giordani

Carbon-based nanomaterials functionalized with fluorescent and water-soluble groups have emerged as platforms for biological imaging because of their low toxicity and ability to be internalized by cells. The development of imaging probes based on carbon nanomaterials for biomedical studies requires the understanding of their biological response as well as the efficient and safety exposition of ...

Journal: :ACS nano 2015
Betar M Gallant X Wendy Gu David Z Chen Julia R Greer Nathan S Lewis

The interfacial shear strength between Si microwires and a Nafion membrane has been tailored through surface functionalization of the Si. Acidic (-COOH-terminated) or basic (-NH2-terminated) surface-bound functionality was introduced by hydrosilylation reactions to probe the interactions between the functionalized Si microwires and hydrophilic ionically charged sites in the Nafion polymeric sid...

2016
Corey M. Kruse Sidy Ndao Corey Michael Kruse George Gogos

In the present work, functionalized 304 stainless steel metallic surfaces were created with the use of a Femtosecond Laser Surface Processing (FLSP) technique. The laser processing technique produces self-organized micro/nanostructures on the surface. The heat transfer performance of various FLSP functionalized surfaces were characterized through pool boiling and Leidenfrost experiments. Enhanc...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2008
Céline Dablemont Philippe Lang Claire Mangeney Jean-Yves Piquemal Valeri Petkov Frédéric Herbst Guillaume Viau

Platinum nanoparticles with a mean size of 1.7 nm were synthesized by reduction in sodium acetate solution in 1,2-ethanediol. The particles were then functionalized with dodecylamine, dodecanethiol, and omega-mercapto-undecanoic acid (MUDA). Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS) showed important variations of the particle surface state with fu...

Journal: :Journal of nanobiotechnology 2016
Jesus Valdez Swapnil Bawage Idalia Gomez Shree Ram Singh

BACKGROUND Respiratory syncytial virus (RSV) causes severe respiratory infection in infants, children and elderly. Currently, there is no effective vaccine or RSV specific drug for the treatment. However, an antiviral drug ribavirin and palivizumab is prescribed along with symptomatic treatment. RSV detection is important to ensure appropriate treatment of children. Most commonly used detection...

Journal: :Chemical communications 2009
Papapida Pornsuriyasak Sneha C Ranade Aixiao Li M Cristina Parlato Charles R Sims Olga V Shulga Keith J Stine Alexei V Demchenko

A new surface-tethered iterative carbohydrate synthesis (STICS) technology is presented in which a surface functionalized 'stick' made of chemically stable high surface area porous gold allows one to perform cost efficient and simple synthesis of oligosaccharide chains; at the end of the synthesis, the oligosaccharide can be cleaved off and the stick reused for subsequent syntheses.

2006
Dal-Hyun Kim Kenji Okamoto Lori S. Goldner Jeeseong Hwang

Fluorescent nanocrystals (quantum dots or QDs) have a number of unique properties that overcome the limitations of conventional organic dyes. However, the optical properties of QDs have been observed to be strongly dependent upon their local chemical environment including novel surface coatings, which have been developed to render QDs water soluble and conjugation ready leading to their use as ...

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