Controlled nanoscale motion
Here we outline the design principles at the basis of redox switching of molecular motion in artificial nanodevices. Redox processes, chemically, electrically, or photochemically induced, can indeed supply the energy to bring about molecular motions. Moreover, in the case of electrically and photochemically induced processes, electrochemical and photochemical techniques can be used to read the state of the system, and thus to control and monitor the operation of the device.
Some selected examples are also reported to describe the most representative achievements in this research area. Redox Signal.
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Create a new account Email. Due to the small size of the particles on the detector, we applied the localization algorithm with a small fitting window. This introduced pixel locking error, in which the particle positions were localized toward the center of the pixels. The pixel locking error was corrected removed by applying the single pixel interior fill factor SPIFF algorithm 12 , The nm- and nm-diameter Ag nanoparticles were differentiated by imaging them on the sCMOS array detector Andor, Neo and observing differences in their relative size and brightness.
The nm-diameter particles appeared larger on the sCMOS i. We state that we used nm diameter and nm diameter Ag NPs for the experiments based on the manufacturer's stated specifications Nanocompsix. However, as shown in the Supplementary Information, we determined that the actual typical diameters of the larger nanoparticles is nm. We performed 11 independent experiments, each of which was frames in length. Of these experiments, we limited the analysis to cases in which we observed two particles in the trap without a third particle nearby.
We used the intensity information from the sCMOS detector to identify whether the particle pair was a homodimer five particle pairs, frames or a heterodimer 12 particle pairs, 18, frames. Separation-dependent MSD curves were calculated by identifying 9 trajectories of homodimer pairs and 11 trajectories of heterodimer pairs that were at optical binding separation less than 1. Then, we used their trajectories to calculate the red MSD curve that is shown in Fig. Newton I. Philosophiae Naturalis Principia Mathematica. Prostat apud plures Bibliopolas, Ivlev, A. X 5 , Sukhov, S.
A Supramolecular Approach to Nanoscale Motion: Polymersome-Based Self-Propelled Nanomotors.
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We thank Dr. Tian-Song Deng for his help in the characterization experiments of the Ag nanoparticles.
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Peterson, John Parker. Correspondence to Norbert F. Reprints and Permissions.
Nano Letters Advanced search. Skip to main content. Subjects Nanoparticles Nanophotonics and plasmonics Optical manipulation and tweezers. Full size image. Particle imaging and tracking Following data acquisition, we tracked the particle positions using the Mosaic particle tracking toolbox for ImageJ Particle characterization The nm- and nm-diameter Ag nanoparticles were differentiated by imaging them on the sCMOS array detector Andor, Neo and observing differences in their relative size and brightness. Data analysis We performed 11 independent experiments, each of which was frames in length.
References 1. Google Scholar 3. Article Google Scholar 6. Article Google Scholar 8. Article Google Scholar Article Google Scholar Download references. Acknowledgements We thank Dr. Ethics declarations Conflict of interest The authors declare that they have no conflict of interest. Electronic supplementary material Supplemental material pdf. Video 1 - Ag homodimer in ring trap.
Video 2 - Ag heterodimer in ring trap - CW motion. Video 3 - Ag heterodimer in ring trap - CW motion.