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We develop an integrated system of holographic optical trapping and multimodal nonlinear microscopy and perform simultaneous three-dimensional optical manipulation and non-invasive structural imaging of composite soft-matter systems. We…

Soft Condensed Matter · Physics 2015-05-20 Rahul P. Trivedi , Taewoo Lee , Kris A. Bertness , Ivan I. Smalyukh

The electrokinetic effect of dielectrophoresis is a promising way of inducing forces and torques on a broad class of polarizable objects at micro- and mesoscale. We introduce a non-contact micro-manipulation technique based on this…

Systems and Control · Electrical Eng. & Systems 2020-02-21 Tomáš Michálek , Zdeněk Hurák

Manipulating the polarization of light is highly desired for versatile applications ranging from super resolution, optical trapping, to particle acceleration. The enormous freedom in metasurface design motivates the implementation of…

Employing electrons for direct control of nanoscale reaction is highly desirable since it provides fabrication of nanostructures with different properties at atomic resolution and with flexibility of dimension and location. Here, applying…

Recent advances in scanning transmission electron microscopy (STEM) instrumentation have made it possible to focus electron beams with sub-atomic precision and to identify the chemical structure of materials at the level of individual…

Materials Science · Physics 2017-03-08 T. Susi , J. C. Meyer , J. Kotakoski

Nanomechanical systems offer a versatile platform for both fundamental science and industrial applications. Resonating vibration has been demonstrated to enable an ultrasensitive detection of various physical quantities, with emerging…

A nanometer-thin-cell (in the direction of laser beam propagation) has been elaborated with the thickness of the atomic vapor column varying smoothly in the range of $L = \unit[50-1500]{nm}$. The cell allows one to study the behavior of the…

Atomic Physics · Physics 2016-04-20 A. Sargsyan , Y. Pashayan-Leroy , C. Leroy , D. Sarkisyan

Controlled modulation of electronic band structure in two-dimensional (2D) materials via doping is crucial for devices fabrication. For instance doped graphene has been envisaged for various applications like sensors, super-capacitors,…

Materials Science · Physics 2025-01-08 Imtiaz Noor Bhatti , J. Avila , Z. Chen , A. Baron , Y. Zhang , A. Shukla , P. Dudin

Graphene-based devices have shown great promise for several applications. For graphene devices to be used in real-world systems, it is necessary to demonstrate competitive device performance, repeatability of results, reliability, and a…

In addition to optical tweezers, magnetic tweezers and dielectrophoresis technique, trapping and manipulating micro or nano particles with electrostatic tweezers attracted attention in recent years. Here we present a simulation study on the…

Mesoscale and Nanoscale Physics · Physics 2015-11-02 Jingkun Guo , Zijin Lei , Shengyong Xu

We study the influence of a scanning nano-electrode on fluorescence excitation spectra of single terrylene molecules embedded in thin p-terphenyl films at cryogenic temperatures. We show that applied voltages less than 10 V can result in…

Chemical Physics · Physics 2010-09-17 Ilja Gerhardt , Gert Wrigge , Vahid Sandoghdar

Here we report on the use of double-nanohole (DNH) optical tweezers as a label-free and free-solution single-molecule probe for protein-DNA interactions. Using this approach, we demonstrate the unzipping of individual 10 base pair…

Biological Physics · Physics 2014-03-18 Abhay Kotnala , Reuven Gordon

Metal nanoantennas enable the manipulation of light emission and detection at the single photon level by confining light into very small volumes. Emitters coupled to these plasmonic structures are thus ideal candidates for usage in quantum…

Optics · Physics 2020-08-11 Nathan Kimmitt , Esther A. Wertz

It has long been an ultimate goal to introduce chemical doping at the atomic level to precisely tune properties of materials. Two-dimensional materials have natural advantage because of its highly-exposed surface atoms, however, it is still…

High resolution nanoscale imaging in liquid environments is crucial for studying molecular interactions in biological and chemical systems. In particular, electron microscopy is the gold-standard tool for nanoscale imaging, but its…

Soft Condensed Matter · Physics 2015-07-20 Wayne Yang , Yuning Zhang , Michael Hilke , Walter Reisner

A purely electrical sensing scheme is presented that determines the concentration of macromolecules in solution by measuring the capacitance between planar microelectrodes. Concentrations of DNA in the ng/mL range have been used in samples…

Biological Physics · Physics 2009-01-20 Anja Henning , Joerg Henkel , Frank F Bier , Ralph Hoelzel

The quest for realizing and manipulating ever smaller man-made movable structures and dynamical machines has spurred tremendous endeavors, led to important discoveries, and inspired researchers to venture to new grounds. Scientific feats…

Non-invasive and ultra-accurate optical manipulation of nanometer objects has recently gained a growing interest as a powerful enabling tool in nanotechnology and biophysics. In this context, Self-Induced Back-Action (SIBA) trapping in…

Optics · Physics 2016-12-28 Pau Mestres , Johann Berthelot , Romain Quidant

The controllable handling of an arbitrary single particle of matter with sub-100 nanometer (nm) dimensions is an essential but unsolved scientific challenge. We demonstrate nanoparticle-seeded glancing angle deposition using 10-100 nm…

Visualization and manipulation of nanoscale matter is one of the main and current challenges in nanosciences. To this aim, different techniques have been recently developed to non-invasively trap and manipulate nano-specimens, like…

Mesoscale and Nanoscale Physics · Physics 2016-11-23 Irene Alda , Johann Berthelot , Raúl A. Rica , Romain Quidant