nanoparticle curvature

Effect of interfacial curvature on the adsorption of

 · We find that the contact angle for a block-copolymer stabilized nanoparticle is affected by the curvature of the oil-water interface. This is a departure from earlier results of Komura et al. J. Chem. Phys. 2006 124 241104 where the contact angle of a solid particle at a curved interface obeys the Young s formula for contact angle in

Phys. Rev. Materials 3 116002 (2019)Curvature

 · Nanoscale curvature is an important and powerful tool in understanding and tailoring chemical/surface functionalities of nanostructures that dictate a host of important applications from biochemical recognitions catalysis to spectroscopy. However it is a critical challenge in materials chemistry to rationally shape the local nanoscale curvatures of colloidal nanoparticles during the

Thermal transport across nanoparticle–fluid interfaces

The variation of the thermal conductance with particle size is found to depend on the fluid–nanoparticle interactions. Strong interactions coupled with large interfacial curvatures lead to optimum interfacial heat transport. This complex dependence can be modelled using an equation that includes the interfacial curvature as a parameter.

Curvature-Dependent Cavity-Nanoparticle Scaffold-Based

 · The corresponding curvature near the located nanoparticle on outer surface and inner surface is estimated as 20 μm −1 and 22 μm −1. Calculated electric field distributions of hollow Au-cylinder/Au-NPs cluster are shown in Fig. 1 i–k in which electromagnetic enhancement is mainly restricted in gap region between nanoparticle-nanoparticle or cylinder-nanoparticle.

Understanding the Self-Assembly Behavior of

 · Membrane Curvature Change Induced by Nanoparticle clustering Figure 2 Clathrin-coated vesicle budding where yolk protein is being incorporated into vesicles in oocytes. Taken from McMahon et al. Nature 438 590 (2005).

The Effect of Nanoparticle Size Shape and Surface

 · least two antigen-binding sites. Similarly on nanoparticle surfaces the presence of ligands at a given density over a specific curvature will contribute to the overall avidity of the nanoparticle-linked ligands for available cell receptors. To illustrate this phenomenon the binding affinity of

Curvature-Dependent Cavity-Nanoparticle

 · Curvature-Dependent Cavity-Nanoparticle Scaffold-Based Clusters with LSPR Enhancement as SERS Plasmonics ( IF 2.335) Pub Date DOI 10.1007/s Tingting You Yukun Gao Huaxiang Chen Penggang Yin

Orientational switching of protein conformation as a

 · Among the various surface properties nanoparticle curvature has a direct effect on the inner root of protein nanoparticle interaction. However the orientation of adsorbed proteins onto the nanoparticle surface and its binding mechanism still remains elusive because of the lack of in-depth knowledge at the molecular level. Here we demonstrate detail molecular insights of the orientational

GitHubben-xD/mit-research-gromacs-induced-curvature

 · Nanoparticle induced curvature simulation setup and analysis scripts. Gromacs 4.6.5 was used for atomistic and coarse-grained simulations of Gold nanoparticle asymmetric insertion into a lipid bilayer to induce curvature. This project is in progress but will finish around July 2018. Enjoy the following random images

Protein adsorption onto nanoparticles induces

 · Nanoparticle sizes ranged from 30 to 1000 nm and in contrast to previous studies we attempted to use a continuous progression of sizes in the range found in live viruses which is an interesting size of nanoparticles for the potential use as drug delivery vehicles. Conformational changes were only visible for particles of 200 nm and bigger.

Nanoscale surface curvature modulates nanoparticle-protein

 · Rational optimization of nanoparticle (NP) surfaces is essential for successful conjugation of proteins to NPs for numerous applications. Using surface-roughened NPs (SRNPs) and quasi-spherical NPs (QSNPs) as two model nanostructures we examined the effects of local surface curvature on protein conformation and interfacial behaviors by circular dichroism (CD) spectroscopy fluorescence

Thermophoresis and Brownian Motion Effects on

 · nanoparticle. Despite the attention paid to aerosol particle deposition under the effects of either Brownian diffusion or thermophoresis there is a lack of study on nanoparticle motion and deposition in a bend under the combined effects of these forces. The

Nanoscale surface curvature modulates nanoparticle-protein

 · Rational optimization of nanoparticle (NP) surfaces is essential for successful conjugation of proteins to NPs for numerous applications. Using surface-roughened NPs (SRNPs) and quasi-spherical NPs (QSNPs) as two model nanostructures we examined the effects of local surface curvature on protein conformation and interfacial behaviors by circular dichroism (CD) spectroscopy fluorescence

1808.03552 Conforming nanoparticle sheets to surfaces

 · Nanoparticle monolayers not only can bend but also cope with strain through local particle rearrangement and plastic deformation. This means that unlike thin sheets such as paper or graphene nanoparticle sheets can much more easily conform to surfaces with complex topography characterized by non-zero Gaussian curvature like spherical caps

Effect of interfacial curvature on the adsorption of

 · We find that the contact angle for a block-copolymer stabilized nanoparticle is affected by the curvature of the oil-water interface. This is a departure from earlier results of Komura et al. J. Chem. Phys. 2006 124 241104 where the contact angle of a solid particle at a curved interface obeys the Young s formula for contact angle in

Effect of nanoscale surface roughness on surface-tuned

 · curvature and height How –Modeling surface roughness 2D-FFT Angular integral Roughness period (P) = 25 nm Roughness radius of curvature (R p) 32 nm Effect of surface roughness on gold nanoparticle resonances

Understanding the Self-Assembly Behavior of

 · Membrane Curvature Change Induced by Nanoparticle clustering Figure 2 Clathrin-coated vesicle budding where yolk protein is being incorporated into vesicles in oocytes. Taken from McMahon et al. Nature 438 590 (2005).

Nanoparticle shape thermodynamics and kineticsIOPscience

 · Nanoparticles can be beautiful as in stained glass windows or they can be ugly as in wear and corrosion debris from implants. We estimate that there will be about 70 000 papers in 2015 with nanoparticles as a keyword but only one in thirteen uses the nanoparticle shape as an additional keyword and research focus and only one in two hundred has thermodynamics.

Protein–Nanoparticle Interaction Corona Formation and

 · A large radius of curvature results in a planar surface and small-sized NPs possess a small radius of curvature. The planar surface may provide a wide contact area for protein binding resulting in stronger interactions between proteins and NPs. 47 48 As many proteins are smaller than NPs such as CNTs a bulk of proteins could be adsorbed

Ligand Length and Surface Curvature Modulate Nanoparticle

Motivated by the recent nuclear magnetic resonance (NMR) analysis of functionalized gold nanoparticles (J. Am. Chem. Soc. 141 2019 ) we conduct explicit solvent atomistic simulations to characterize the conformational distribution and dynamics of surface ligands on a small gold nanoparticle of 2 nm diameter.

GitHubben-xD/mit-research-gromacs-induced-curvature

 · Nanoparticle induced curvature simulation setup and analysis scripts. Gromacs 4.6.5 was used for atomistic and coarse-grained simulations of Gold nanoparticle asymmetric insertion into a lipid bilayer to induce curvature. This project is in progress but will finish around July 2018. Enjoy the following random images

nanoparticle surface curvature Supplementary information

 · nanoparticle surface curvature Haifeng Yuan a Kris P. F. Janssen b Thomas Franklin b Gang Lu a Liang Su a Xian Gu b Hiroshi Uji-i a c Maarten Roeffaersb and Johan Hofkensa d a Department of Chemistry KU Leuven Celestijnenlaan 200F B-3001 Leuven Belgium.

Phys. Rev. Materials 3 116002 (2019)Curvature

 · Nanoscale curvature is an important and powerful tool in understanding and tailoring chemical/surface functionalities of nanostructures that dictate a host of important applications from biochemical recognitions catalysis to spectroscopy. However it is a critical challenge in materials chemistry to rationally shape the local nanoscale curvatures of colloidal nanoparticles during the

Conforming nanoparticle sheets to surfaces with Gaussian

This means that unlike thin sheets such as paper or graphene nanoparticle sheets can much more easily conform to surfaces with complex topography characterized by non-zero Gaussian curvature like spherical caps or saddles.

Calcium-triggered fusion of lipid membranes is enabled by

 · Lipid membrane fusion is a critical component of biological transport communication and developmental processes. The fusion reaction is kinetically constrained since it contains multiple large energy barriers so proteins and ions are used by natural systems to intervene and catalyze the reaction toward biologically relevant timescales. Here we demonstrate how amphiphilic nanoparticles can

Curvature effects in DNA Au nanoparticle conjugates — Penn

Characterization control and a thorough understanding of the DNA surface interface are essential in the development of these conjugates. A new paper in this issue explores the impact of nanosphere diameter on DNA adsorption and demonstrates that particle curvature plays an important role in controlling the DNA surface density.

Nanoscale Surface Curvature Effects on Ligand

 · nanoparticle interactions. However it still remains challenging to disentangle the intertwining thermodynamic kinetic and geometric factors that underpin the surface curvature-depend-ent ligand behaviors largely due to the surface structural complexity of

Nanoscale Surface Curvature Effects on

 · nanoparticle interactions. However it still remains challenging to disentangle the intertwining thermodynamic kinetic and geometric factors that underpin the surface curvature-depend-ent ligand behaviors largely due to the surface structural complexity of

Nanoscale surface curvature modulates nanoparticle-protein

 · A NP surface with nanoscale curvature is essentially composed of a variety of localized high-index facets and the surface atomic coordinations are geometrically defined by the local surface curvature of the NPs. Each type of crystallographic facets has its characteristic surface atom coordination.

Phys. Rev. Lett. 91 046805 (2003)Chern Numbers for

 · Planar projection of the total (negative) Berry curvature − C n for a 25-atom nanoparticle. The strength of the spin-orbit coupling ξ = 165 m e V is chosen in proximity to a value at which the Fermi level and the first unoccupied level cross. Level crossing occurs for a given n and its opposite − n .

Effect of gold nanoparticle morphology on adsorbed protein

 · Nanoparticle size and curvature can have substantial effects on protein structure and stability compared to relatively flat supports. It has been shown for example that lysozyme retains more of its native secondary structure and enzymatic activity on smaller highly curved hydrophilic silica nanospheres than on larger particles 23 .

Calcium-triggered fusion of lipid membranes is enabled by

 · Lipid membrane fusion is a critical component of biological transport communication and developmental processes. The fusion reaction is kinetically constrained since it contains multiple large energy barriers so proteins and ions are used by natural systems to intervene and catalyze the reaction toward biologically relevant timescales. Here we demonstrate how amphiphilic nanoparticles can

nanoparticle surface curvature Supplementary information

 · nanoparticle surface curvature Haifeng Yuan a Kris P. F. Janssen b Thomas Franklin b Gang Lu a Liang Su a Xian Gu b Hiroshi Uji-i a c Maarten Roeffaersb and Johan Hofkensa d a Department of Chemistry KU Leuven Celestijnenlaan 200F B-3001 Leuven Belgium.

Phys. Rev. Materials 3 116002 (2019)Curvature

 · Nanoscale curvature is an important and powerful tool in understanding and tailoring chemical/surface functionalities of nanostructures that dictate a host of important applications from biochemical recognitions catalysis to spectroscopy. However it is a critical challenge in materials chemistry to rationally shape the local nanoscale curvatures of colloidal nanoparticles during the