38 research outputs found
Sorting Metal Nanoparticles with Dynamic and Tunable Optical Driven Forces
Precise sorting of
colloidal nanoparticles is a challenging yet
necessary task for size-specific applications of nanoparticles in
nanophotonics and biochemistry. Here we present a new strategy for
all-optical sorting of metal nanoparticles with dynamic and tunable
optical driven forces generated by phase gradients of light. Size-dependent
optical forces arising from the phase gradients of optical line traps
can drive nanoparticles of different sizes with different velocities
in solution, leading to their separation along the line traps. By
using a sequential combination of optical lines to create differential
trapping potentials, we realize precise sorting of silver and gold
nanoparticles in the diameter range of 70β150 nm with a resolution
down to 10 nm. Separation of the nanoparticles agrees with the analysis
of optical forces acting on them and with simulations of their kinetic
motions. The results provide new insights into all-optical nanoparticle
manipulation and separation and reveal that there is still room to
sort smaller nanoparticle with nanometer precision using dynamic phase-gradient
forces
Probing Spatiotemporal Stability of Optical Matter by Polarization Modulation
Light-driven self-organization
of plasmonic nanoparticles via optical
binding interactions offers a unique route to assemble mesoscale photonic
clusters and chains. However, stability becomes an issue when more
nanoparticles are added into the clusters and chains, since the theoretical
optical binding strength is inhomogeneous and anisotropic in optical
matter systems. Here we study the spatiotemporal stability of optical
matter chains self-organized by two to eight ultrauniform gold nanospheres
in a linearly polarized optical line trap. Perturbations are introduced
into the nanosphere chains by periodically switching the polarization
to be either parallel or perpendicular to the orientation of the chains,
where the spatial and temporal variation of optical binding strength
has been revealed. In addition, we found that the average oscillation
amplitude and stability of the particles can be tuned by the frequency
of polarization modulation. These results demonstrate a new way to
study and improve the stability of optical matter and provide a promising
strategy in engineering optical forces at the mesoscale
Sorting Metal Nanoparticles with Dynamic and Tunable Optical Driven Forces
Precise sorting of
colloidal nanoparticles is a challenging yet
necessary task for size-specific applications of nanoparticles in
nanophotonics and biochemistry. Here we present a new strategy for
all-optical sorting of metal nanoparticles with dynamic and tunable
optical driven forces generated by phase gradients of light. Size-dependent
optical forces arising from the phase gradients of optical line traps
can drive nanoparticles of different sizes with different velocities
in solution, leading to their separation along the line traps. By
using a sequential combination of optical lines to create differential
trapping potentials, we realize precise sorting of silver and gold
nanoparticles in the diameter range of 70β150 nm with a resolution
down to 10 nm. Separation of the nanoparticles agrees with the analysis
of optical forces acting on them and with simulations of their kinetic
motions. The results provide new insights into all-optical nanoparticle
manipulation and separation and reveal that there is still room to
sort smaller nanoparticle with nanometer precision using dynamic phase-gradient
forces
Sorting Metal Nanoparticles with Dynamic and Tunable Optical Driven Forces
Precise sorting of
colloidal nanoparticles is a challenging yet
necessary task for size-specific applications of nanoparticles in
nanophotonics and biochemistry. Here we present a new strategy for
all-optical sorting of metal nanoparticles with dynamic and tunable
optical driven forces generated by phase gradients of light. Size-dependent
optical forces arising from the phase gradients of optical line traps
can drive nanoparticles of different sizes with different velocities
in solution, leading to their separation along the line traps. By
using a sequential combination of optical lines to create differential
trapping potentials, we realize precise sorting of silver and gold
nanoparticles in the diameter range of 70β150 nm with a resolution
down to 10 nm. Separation of the nanoparticles agrees with the analysis
of optical forces acting on them and with simulations of their kinetic
motions. The results provide new insights into all-optical nanoparticle
manipulation and separation and reveal that there is still room to
sort smaller nanoparticle with nanometer precision using dynamic phase-gradient
forces
Sorting Metal Nanoparticles with Dynamic and Tunable Optical Driven Forces
Precise sorting of
colloidal nanoparticles is a challenging yet
necessary task for size-specific applications of nanoparticles in
nanophotonics and biochemistry. Here we present a new strategy for
all-optical sorting of metal nanoparticles with dynamic and tunable
optical driven forces generated by phase gradients of light. Size-dependent
optical forces arising from the phase gradients of optical line traps
can drive nanoparticles of different sizes with different velocities
in solution, leading to their separation along the line traps. By
using a sequential combination of optical lines to create differential
trapping potentials, we realize precise sorting of silver and gold
nanoparticles in the diameter range of 70β150 nm with a resolution
down to 10 nm. Separation of the nanoparticles agrees with the analysis
of optical forces acting on them and with simulations of their kinetic
motions. The results provide new insights into all-optical nanoparticle
manipulation and separation and reveal that there is still room to
sort smaller nanoparticle with nanometer precision using dynamic phase-gradient
forces
Sorting Metal Nanoparticles with Dynamic and Tunable Optical Driven Forces
Precise sorting of
colloidal nanoparticles is a challenging yet
necessary task for size-specific applications of nanoparticles in
nanophotonics and biochemistry. Here we present a new strategy for
all-optical sorting of metal nanoparticles with dynamic and tunable
optical driven forces generated by phase gradients of light. Size-dependent
optical forces arising from the phase gradients of optical line traps
can drive nanoparticles of different sizes with different velocities
in solution, leading to their separation along the line traps. By
using a sequential combination of optical lines to create differential
trapping potentials, we realize precise sorting of silver and gold
nanoparticles in the diameter range of 70β150 nm with a resolution
down to 10 nm. Separation of the nanoparticles agrees with the analysis
of optical forces acting on them and with simulations of their kinetic
motions. The results provide new insights into all-optical nanoparticle
manipulation and separation and reveal that there is still room to
sort smaller nanoparticle with nanometer precision using dynamic phase-gradient
forces
Sorting Metal Nanoparticles with Dynamic and Tunable Optical Driven Forces
Precise sorting of
colloidal nanoparticles is a challenging yet
necessary task for size-specific applications of nanoparticles in
nanophotonics and biochemistry. Here we present a new strategy for
all-optical sorting of metal nanoparticles with dynamic and tunable
optical driven forces generated by phase gradients of light. Size-dependent
optical forces arising from the phase gradients of optical line traps
can drive nanoparticles of different sizes with different velocities
in solution, leading to their separation along the line traps. By
using a sequential combination of optical lines to create differential
trapping potentials, we realize precise sorting of silver and gold
nanoparticles in the diameter range of 70β150 nm with a resolution
down to 10 nm. Separation of the nanoparticles agrees with the analysis
of optical forces acting on them and with simulations of their kinetic
motions. The results provide new insights into all-optical nanoparticle
manipulation and separation and reveal that there is still room to
sort smaller nanoparticle with nanometer precision using dynamic phase-gradient
forces
Sorting Metal Nanoparticles with Dynamic and Tunable Optical Driven Forces
Precise sorting of
colloidal nanoparticles is a challenging yet
necessary task for size-specific applications of nanoparticles in
nanophotonics and biochemistry. Here we present a new strategy for
all-optical sorting of metal nanoparticles with dynamic and tunable
optical driven forces generated by phase gradients of light. Size-dependent
optical forces arising from the phase gradients of optical line traps
can drive nanoparticles of different sizes with different velocities
in solution, leading to their separation along the line traps. By
using a sequential combination of optical lines to create differential
trapping potentials, we realize precise sorting of silver and gold
nanoparticles in the diameter range of 70β150 nm with a resolution
down to 10 nm. Separation of the nanoparticles agrees with the analysis
of optical forces acting on them and with simulations of their kinetic
motions. The results provide new insights into all-optical nanoparticle
manipulation and separation and reveal that there is still room to
sort smaller nanoparticle with nanometer precision using dynamic phase-gradient
forces
Probing Spatiotemporal Stability of Optical Matter by Polarization Modulation
Light-driven self-organization
of plasmonic nanoparticles via optical
binding interactions offers a unique route to assemble mesoscale photonic
clusters and chains. However, stability becomes an issue when more
nanoparticles are added into the clusters and chains, since the theoretical
optical binding strength is inhomogeneous and anisotropic in optical
matter systems. Here we study the spatiotemporal stability of optical
matter chains self-organized by two to eight ultrauniform gold nanospheres
in a linearly polarized optical line trap. Perturbations are introduced
into the nanosphere chains by periodically switching the polarization
to be either parallel or perpendicular to the orientation of the chains,
where the spatial and temporal variation of optical binding strength
has been revealed. In addition, we found that the average oscillation
amplitude and stability of the particles can be tuned by the frequency
of polarization modulation. These results demonstrate a new way to
study and improve the stability of optical matter and provide a promising
strategy in engineering optical forces at the mesoscale
Probing Spatiotemporal Stability of Optical Matter by Polarization Modulation
Light-driven self-organization
of plasmonic nanoparticles via optical
binding interactions offers a unique route to assemble mesoscale photonic
clusters and chains. However, stability becomes an issue when more
nanoparticles are added into the clusters and chains, since the theoretical
optical binding strength is inhomogeneous and anisotropic in optical
matter systems. Here we study the spatiotemporal stability of optical
matter chains self-organized by two to eight ultrauniform gold nanospheres
in a linearly polarized optical line trap. Perturbations are introduced
into the nanosphere chains by periodically switching the polarization
to be either parallel or perpendicular to the orientation of the chains,
where the spatial and temporal variation of optical binding strength
has been revealed. In addition, we found that the average oscillation
amplitude and stability of the particles can be tuned by the frequency
of polarization modulation. These results demonstrate a new way to
study and improve the stability of optical matter and provide a promising
strategy in engineering optical forces at the mesoscale