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Detection and characterization of individual nano-scale particles, virions, and pathogens are of paramount importance to human health, homeland security, diagnostic and environmental monitoring[1]. There is a strong demand for…

Optics · Physics 2011-07-06 Lina He , Sahin Kaya Ozdemir , Jiangang Zhu , Woosung Kim , Lan Yang

Particles that can be trapped in optical tweezers range from tens of microns down to tens of nanometres in size. Interestingly, this size range includes large macromolecules. We show experimentally, in agreement with theoretical…

Optics · Physics 2007-05-23 W. Singer , T. A. Nieminen , N. R. Heckenberg , H. Rubinsztein-Dunlop

Coupled and shape-tailored metallic nanoparticles are known to exhibit hybridized plasmon resonances. This Letter discuss the optical properties of a complementary system formed by overlapped nanovoid dimers buried in gold and filled with…

Materials Science · Physics 2009-11-13 I. Romero , T. V. Teperik , F. J. Garcia de Abajo

Microlasers are of ample interest for advancing quantum chaos studies at the intersection of wave dynamics and geometric optics in resonators. However, the mode structures of three-dimensional microlasers without rotational symmetry remain…

High-power and highly directional semiconductor cylinder-lasers based on an optical resonator with deformed cross section are reported. In the favorable directions of the far-field, a power increase of up to three orders of magnitude over…

Technical challenges in molecule sensing and chemical detection have created an increasing demand for transformative materials with high sensitivity and specificity. Biohybrid nanopores have attracted growing interest as they can ideally…

Biological Physics · Physics 2022-04-05 Francois Sicard , A. Ozgur Yazaydin

Solid-state nanopores, nm-sized holes in thin, freestanding membranes, are powerful single-molecule sensors capable of interrogating a wide range of target analytes, from small molecules to large polymers. Interestingly, due to their high…

We designed an on-chip transformative optic system of a metalens-photonic crystal resonator metasystem on a foundry compatible silicon photonic platform. By adjusting the on-chip metalens' focusing length and mode dimension, the insertion…

Optics · Physics 2021-03-10 Yahui Xiao , Zi Wang , Feifan Wang , Hwaseob Lee , Thomas Kananen , Tingyi Gu

The use of metal nanostructures for colourization has attracted a great deal of interest with the recent developments in plasmonics. However, the current top-down colourization methods based on plasmonic concepts are tedious and time…

Silicon nanoparticles possess unique size-dependent optical properties due to their strong electric and magnetic resonances in the visible range. However, their widespread application has been limited, in comparison to other (e.g. metallic)…

Dielectric microspheres with diameters on the order of several wavelengths of light have attracted increasing attention from the photonics community due to their ability to produce extraordinarily tightly focused beams termed photonic…

Optics · Physics 2015-03-12 Kenneth W. Allen

Micropatterning techniques have become an important tool for the study of cell behavior in controlled microenvironments. As a consequence, several approaches for the creation of micropatterns have been developed in recent years. However,…

Biological Physics · Physics 2016-02-05 F. J. Segerer , P. J. F. Röttgermann , S. Schuster , A. Piera Alberola , S. Zahler , J. O. Rädler

Application of circularly polarized beams in interferometric illumination of colloid sphere monolayers enables the direct fabrication of rectangular patterns consisting of circular nanohole miniarrays in metal films. The spectral and…

Optics · Physics 2020-05-18 Emese Toth , Aron Sipos , Oliver A. Fekete , Maria Csete

Superconducting boron doped silicon is a promising material for integrated silicon quantum devices. In particular, its low electronic density and moderate disorder make it a suitable candidate for the fabrication of large inductances with…

Superconductivity · Physics 2021-06-25 P. Bonnet , F. Chiodi , D. Flanigan , R. Delagrange , N. Brochu , D. Débarre , H. le Sueur

Classical microcontact printing involves transfer of molecules adsorbed on the outer surfaces of solid stamps to substrates to be patterned. We prepared spongy mesoporous silica stamps that can be soaked with ink and that were…

We present a simple lithographic method for fabrication of microresonator devices at the optical fiber surface. First, we undress the predetermined surface areas of a fiber segment from the polymer coating with a focused CO2 laser beam.…

Optics · Physics 2021-04-21 N. Toropov , S. Zaki , T. Vartanyan , M. Sumetsky

We report the fabrication of diverse light guiding structures embedded in oxidised porous silicon (OPS) by means of patterned pore filling through a single photoresist mask. The pores of OPS were filled with KDP salt from unsaturated…

Applied Physics · Physics 2020-01-22 Alexander Kellarev , Shlomo Ruschin

We extend Lamb's reduced density matrix laser theory to analyze the inhomogeneous molecular couplings and the mode-correlation in a plasmonic nano-laser consisting of a gold sphere and many dye molecules interacting with a driving optical…

Optics · Physics 2017-04-27 Yuan Zhang , Klaus Mølmer

We demonstrate a novel technique for creating, manipulating, and combining femtoliter volume chemical containers. Possible uses include creating controlled chemical reactions involving small quantities of reagent, and studying the dynamics…

Biological Physics · Physics 2007-05-23 J. E. Reiner , A. M. Crawford , R. B. Kishore , Lori. S. Goldner , M. K. Gilson , K. Helmerson

We propose, design and construct a variant of the conventional axion haloscope concept that could be competitive in the search for dark matter axions of masses in the decade 10-100 $\mu$eV. Theses masses are located somewhat above the mass…