Optical traps (tweezers) are beginning to be used with increasing efficacy in diverse studies in the biological and biomedical sciences. We report here results of a systematic study aimed at enhancing the efficiency with which dielectric (transparent) materials can be optically trapped. Specifically, we investigate how truncation of the incident laser beam affects the strength of an optical trap in the presence of a circular aperture. Apertures of various sizes have been used by us to alter the beam radius, thereby changing the effective numerical aperture and intensity profile. We observe significant enhancement of the radial and axial trap stiffness when an aperture is used to truncate the beam compared to when no aperture was used, keepi...
The use of optical forces generated by a focused laser beam for manipulating single polymer chains a...
<div><p>Advances in light shaping techniques are leading to new tools for optical trapping and micro...
The use of optical forces generated by a focused laser beam for manipulating single polymer chains a...
Optical traps (tweezers) are beginning to be used with increasing efficacy in diverse studies in the...
For optical tweezers, especially when used in biological studies, optimizing the trapping efficiency...
The use of a wire mesh facilitates creation of multiple optical traps for manipulation of small micr...
Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Any: 2015, Tutor: M...
A highly-focused laser beam can provide an attractive force (on the order of piconewtons) capable of...
Recently our group demonstrated the ability to trap bacteria using optical tweezers, but low laser p...
In optical trapping systems the trap stiffness, or spring constant, deteriorates dramatically with t...
AbstractOptical tweezers have revolutionized our understanding of the microscopic world. Axial optic...
For optical tweezers, a tiny focal spot of the trapping beam is necessary for providing sufficient i...
We report on the limitations of using a spatial light modulator (SLM) within optical tweezers to pro...
Position clamping in optical tweezers allows us to use less laser power at a cer-tain trapping stiff...
The transverse force profile of a particle in an optical trap is important for the designs of optica...
The use of optical forces generated by a focused laser beam for manipulating single polymer chains a...
<div><p>Advances in light shaping techniques are leading to new tools for optical trapping and micro...
The use of optical forces generated by a focused laser beam for manipulating single polymer chains a...
Optical traps (tweezers) are beginning to be used with increasing efficacy in diverse studies in the...
For optical tweezers, especially when used in biological studies, optimizing the trapping efficiency...
The use of a wire mesh facilitates creation of multiple optical traps for manipulation of small micr...
Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Any: 2015, Tutor: M...
A highly-focused laser beam can provide an attractive force (on the order of piconewtons) capable of...
Recently our group demonstrated the ability to trap bacteria using optical tweezers, but low laser p...
In optical trapping systems the trap stiffness, or spring constant, deteriorates dramatically with t...
AbstractOptical tweezers have revolutionized our understanding of the microscopic world. Axial optic...
For optical tweezers, a tiny focal spot of the trapping beam is necessary for providing sufficient i...
We report on the limitations of using a spatial light modulator (SLM) within optical tweezers to pro...
Position clamping in optical tweezers allows us to use less laser power at a cer-tain trapping stiff...
The transverse force profile of a particle in an optical trap is important for the designs of optica...
The use of optical forces generated by a focused laser beam for manipulating single polymer chains a...
<div><p>Advances in light shaping techniques are leading to new tools for optical trapping and micro...
The use of optical forces generated by a focused laser beam for manipulating single polymer chains a...