12 results match your criteria Current Nanoscience[Journal]

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Suggested Procedures for the Reproducible Synthesis of Poly(d,l-lactide-co-glycolide) Nanoparticles Using the Emulsification Solvent Diffusion Platform.

Curr Nanosci 2018 Oct;14(5):448-453

1Drug Delivery Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Pde, ParkvilleVIC, 3052, Australia; 2ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Melbourne, VIC, 3052, Australia; 3School of Biomedical Sciences, University of Queensland, St LuciaQLD, 4072, Australia.

Background: Poly(d,l-lactide-co-glycolide) (PLGA) based biodegradable nanoparticles are of key interest for the development of controlled release drug delivery systems and for other biomedical applications. It has been reported that PLGA polymers can be converted into colloidal nanoparticulate systems by various techniques, such as emulsification-diffusion, emulsification-evaporation, interfacial deposition, salting out, dialysis and nanoprecipitation. Emulsification-evaporation with water immisci-ble solvents including dichloromethane and chloroform has been the preferred method for the synthesis of PLGA nanoparticles due to the low boiling point and limited water solubility of these solvents. Read More

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http://dx.doi.org/10.2174/1573413714666180313130235DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6225335PMC
October 2018
3 Reads

Graphitization Behavior of Single Crystal Diamond for the Application in Nano-Metric Cutting.

Curr Nanosci 2018 Oct;14(5):377-383

School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin150001, P.R. China.

Background: Graphitization behavior of diamond has received an increasing interest in nanoscale machining of some hard and brittle materials. Diamond has always been an important and excellent tool material in cutting area. However, the graphitization of the diamond tool is inevitable when it was used in special conditions. Read More

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http://dx.doi.org/10.2174/1573413714666180517080721DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6237919PMC
October 2018
2 Reads

Preparation of Nanoparticles Including Antisolvent Drugs by the 
Combination of Roll Milling and High-pressure Homogenization.

Curr Nanosci 2018 Apr;14(2):143-147

Faculty of Pharmaceutical Sciences, Nagasaki International University, Nagasaki, Japan.

Description: Design methods of nanoparticle formulations are divided into break-down methods and build-up methods. The former is further divided into dry and wet processes. For drug nanoparticle preparations, the wet process is generally employed, and organic solvents are used in most formulations. Read More

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http://dx.doi.org/10.2174/1573413713666171109155955DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6040171PMC
April 2018
2 Reads

Sensitive Capacitive-type Hydrogen Sensor Based on Ni Thin Film in Different Hydrogen Concentrations.

Curr Nanosci 2018 Apr;14(2):136-142

Plasma physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran.

Background: Hydrogen sensors are micro/nano-structure that are used to locate hydrogen leaks. They are considered to have fast response/recovery time and long lifetime as compared to conventional gas sensors. In this paper, fabrication of sensitive capacitive-type hydrogen gas sensor based on Ni thin film has been investigated. Read More

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http://dx.doi.org/10.2174/1573413713666171002124909DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5925872PMC
April 2018
4 Reads

Early Stages of Antibacterial Damage of Metallic Nanoparticles by TEM and STEM-HAADF.

Curr Nanosci 2017 Feb;14(1):54-61

Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) Unidad Querétaro. Libramiento Norponiente No. 2000, Fracc. Real de Juriquilla. Querétaro, Querétaro, 76230, México.

Background: Propagation of pathogens has considered an important health care problem due to their resistance against conventional antibiotics. The recent challenge involves the design of functional alternatives such as nanomaterials, used as antibacterial agents. Early stages of antibacterial damage caused by metallic nanoparticles (NPs) were studied by Transmission Electron Microscopy (TEM) and combined Scanning Transmission Electron Microscopy with High Angle Annular Dark Field (STEM-HAADF), aiming to contribute to the elucidation of the primary antibacterial mechanism of metallic NPs. Read More

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http://dx.doi.org/10.2174/2468187307666170906150731DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5748877PMC
February 2017
8 Reads

Effect of Morphology of Co3O4 for Oxygen Evolution Reaction in Alkaline Water Electrolysis.

Curr Nanosci 2014 Feb;11(1):107-112

School of Chemistry and Chemical Engineering/Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, Guangzhou University, Guangzhou 510006, China.

In this paper, three different morphological Co3O4 electrodes for oxygen evolution reaction (OER) have been synthesized. By comparing the three morphologies of Co3O4, the electrocatalytic properties show that the urchin-like spheres of Co3O4 electrode has relative low overpotential and good electrocatalysis stability, indicating that the structure of urchin-like Co3O4 spheres exhibit an easy OER for water splitting. Read More

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http://dx.doi.org/10.2174/1573413710666140925200938DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4266069PMC
February 2014
72 Reads

Novel Iron-oxide Catalyzed CNT Formation on Semiconductor Silicon Nanowire.

Curr Nanosci 2014 Oct;10(5):695-699

Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP), 01000 Kangar, Perlis, Malaysia.

An aqueous ferric nitrate nonahydrate (Fe(NO3)3.9H2O) and magnesium oxide (MgO) were mixed and deposited on silicon nanowires (SiNWs), the carbon nanotubes (CNTs) formed by the concentration of Fe3O4/MgO catalysts with the mole ratio set at 0.15:9. Read More

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http://dx.doi.org/10.2174/1573413710666140701184953DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4161198PMC
October 2014
9 Reads

Multiscale Modeling of Functionalized Nanocarriers in Targeted Drug Delivery.

Curr Nanosci 2011 Oct;7(5):727-735

Department of Bioengineering.

Targeted drug delivery using functionalized nanocarriers (NCs) is a strategy in therapeutic and diagnostic applications. In this paper we review the recent development of models at multiple length and time scales and their applications to targeting of antibody functionalized nanocarriers to antigens (receptors) on the endothelial cell (EC) surface. Our mesoscale (100 nm-1 μm) model is based on phenomenological interaction potentials for receptor-ligand interactions, receptor-flexure and resistance offered by glycocalyx. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3221469PMC
October 2011
9 Reads

Improvement of Electron Field Emission in Patterned Carbon Nanotubes by High Temperature Hydrogen Plasma Treatment.

Curr Nanosci 2009 Feb;5(1):54-57

Division of Physics & Computing, Department of Radiation Oncology, University of North Carolina, Chapel Hill, NC 27599, USA.

In this paper, we report a significant improvement of electron field emission property in patterned carbon nanotubes films by using a high temperature (650 °C) hydrogen plasma treatment. This treatment was found to greatly increase the emission current, emission uniformity and stability. The mechanism study showed that these enhanced properties are attributed to the lowering of the potential barrier and the creation of geometrical features through the removal of amorphous carbon, catalyst particles and the saturation of dangling bonds after such a hydrogen plasma treatment. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2782852PMC
February 2009
18 Reads

Challenges for the Modern Science in its Descend Towards Nano Scale.

Authors:
Vuk Uskoković

Curr Nanosci 2009;5(3):372-389

Division of Biomaterials and Bioengineering, Department of Preventive and Restorative Dental Sciences, University of California, 707 Parnassus Avenue, San Francisco, CA 94143, USA.

The current rise in the interest in physical phenomena at nano spatial scale is described hereby as a natural consequence of the scientific progress in manipulation with matter with an ever higher sensitivity. The reason behind arising of the entirely new field of nanoscience is that the properties of nanostructured materials may significantly differ from their bulk counterparts and cannot be predicted by extrapolations of the size-dependent properties displayed by materials composed of microsized particles. It is also argued that although a material can comprise critical boundaries at the nano scale, this does not mean that it will inevitably exhibit properties that endow a nanomaterial. Read More

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http://dx.doi.org/10.2174/157341309788921381DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4610413PMC
January 2009
15 Reads

Nanoparticle Formulation Increases Oral Bioavailability of Poorly Soluble Drugs: Approaches Experimental Evidences and Theory.

Authors:
Lee Jia

Curr Nanosci 2005 Nov;1(3):237-243

Developmental Therapeutics Program, National Cancer Institute, National Institutes of Health, Rockville, MD 20852, USA.

The increasing frequency at which poorly soluble new chemical entities are being discovered raises concerns in the pharmaceutical industry about drugability associated with erratic dissolution and low bioavailability of these hydrophobic compounds. Nanonization provides a plausible pharmaceutical basis for enhancing oral bioavailability and therapeutic effectiveness of these compounds by increasing their surface area. This paper surveys methods available to pharmaceutical manufacturing nanoparticles, including wet chemical processes, media milling, high pressure homogenization, gas-phase synthesis, and form-in-place processes, and elaborates physicochemical rational and gastrointestinal physiological basis upon which nano-drugs can be readily absorbed. Read More

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http://dx.doi.org/10.2174/157341305774642939DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2768293PMC
November 2005
16 Reads

Global Governmental Investment in Nanotechnologies.

Authors:
Lee Jia

Curr Nanosci 2005 Nov;1(3):263-266

Developmental Therapeutics Program, National Cancer Institute, National Institutes of Health, Rockville, MD 20852; USA.

Nanotechnologies seem to have huge potential to bring benefits in areas as diverse as drug development, water decontamination, information and communication infrastructures, and the production of stronger, lighter and perfect nanomaterials. This potential attracts global investment from governments and private sectors in nanotechnologies with the hopes that R&D and commercial applications of nanomaterials, nanodevices, nanoparticles and nanodrugs will provide new impetus, after the ebb-tides of biotechnology and dotcom, to turn faltering economies around. The global governmental funding has been actively promoting industrial and academic cooperation to realize big prosperity from the nanotechnologies. Read More

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http://dx.doi.org/10.2174/157341305774642957DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2768287PMC
November 2005
14 Reads
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