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Photoswitchable organic molecules can undergo reversible structural changes with an external light stimulus. These optically controlled molecules have been used in the development of smart polymers, optical writing of grating films, and…

We have observed reversible light-induced mechanical switching for a single organic molecule bound to a metal surface. Scanning tunneling microscopy (STM) was used to image the features of an individual azobenzene molecule on Au(111) before…

By first principles calculations, we demonstrate that when decorated with photochromic molecules, it is possible to use light to reversibly control the magnetic properties of a nanoscale magnetic system. The combination of a graphene-based…

介观与纳米尺度物理 · 物理学 2013-11-26 Argo Nurbawono , Chun Zhang

Controlling the activity of proteins with azobenzene photoswitches is a potent tool for manipulating their biological function. With the help of light, one can change e.g. binding affinities, control allostery or temper with complex…

化学物理 · 物理学 2021-09-24 Olga Bozovic , Brankica Jankovic , Peter Hamm

The formation of hybrid light-molecule states (polaritons) offers a new strategy to manipulate the photochemistry of molecules. To fully exploit its potential, one needs to build a toolbox of polaritonic phenomenologies that supplement…

介观与纳米尺度物理 · 物理学 2018-11-20 Jacopo Fregoni , Giovanni Granucci , Emanuele Coccia , Maurizio Persico , Stefano Corni

Nature has developed striking light-powered proteins such as bacteriorhodopsin, which can convert light energy into conformational changes for biological functions. Such natural machines are a great source of inspiration for creation of…

We apply a first-principles computational approach to study a light-sensitive molecular switch. The molecule that comprises the switch can convert between a trans and a cis configuration upon photo-excitation. We find that the conductance…

介观与纳米尺度物理 · 物理学 2015-06-18 Chun Zhang , M. -H. Du , H. -P. Cheng , X. -G. Zhang , A. E. Roitberg , J. L. Krause

The novel phototunable photonic structures based on electrochemically etched silicon filled with four photochromic azobenzene-containing compounds, bent-shaped low molar mass substance and side-chain polymethacrylates and copolyacrylate,…

In a joint theoretical and experimental work the optical properties of azobenzene-functionalized self-assembled monolayers (SAMs) are studied at different molecular packing densities. Our results, based on density-functional and many-body…

材料科学 · 物理学 2016-12-19 Caterina Cocchi , Thomas Moldt , Cornelius Gahl , Martin Weinelt , Claudia Draxl

Entanglement control of qubits in a photoisomerizing molecule is studied in the context of an NMR quantum computer by taking azobenzene as an example. Azobenzene has two different isomers, {\it{}trans}-azobenzene (TAB) and…

量子物理 · 物理学 2010-04-07 Taiga Yasuda , Masahito Tada-Umezaki , Mikio Nakahara , Tomonari Wakabayashi

Reversible control of the photoluminescence of ZnO occurring in the visible range, has been achieved by application of a few volts (< 5V) to a device consisting of nanostructured ZnO film sandwiched between Indium Tin Oxide electrode and…

材料科学 · 物理学 2011-09-15 Manoranjan Ghosh , A. K. Raychaudhuri

Photonic molecules can be used to realize complex optical energy states and modes, analogous to those found in molecules, with properties useful for applications like spectral engineering and quantum optics. It is desirable to implement…

Adaptive optics (AO) is a powerful image correction technique with proven benefits for many life-science microscopy methods. However, the complexity of adding a reflective wavefront modulator and a wavefront sensor into already complicated…

光学 · 物理学 2020-03-26 Pouya Rajaeipour , Alex Dorn , Kaustubh Banerjee , Hans Zappe , Çağlar Ataman

In this work, a reversible control over the visible luminescence of phosphor ZnO is achieved by the application of a few volts (<5V) to nanostructured ZnO film sandwiched between ITO and LiClO4/PEO solid electrolyte. Since ZnO is a good…

材料科学 · 物理学 2011-05-10 Manoranjan Ghosh , A. K. Raychaudhuri

Transparent conducting oxides have recently gained great attention as CMOS-compatible materials for applications in nanophotonics due to their low optical loss, metal-like behavior, versatile/tailorable optical properties, and established…

光学 · 物理学 2015-07-27 N. Kinsey , C. DeVault , J. Kim , M. Ferrera , V. M. Shalaev , A. Boltasseva

Self-assembled functionalized nano particles are at the focus of a number of potential applications, in particular for molecular scale electronics devices. Here we perform experiments of self-assembly of 10 nm Au nano particles (NPs),…

Materials with extreme photonic properties such as maximum diffuse reflectance, high albedo, or tunable band gaps are essential in many current and future photonic devices and coatings. While photonic crystals, periodic anisotropic…

We report here the reversibility and bistability of the switching behavior in an azobenzene derivative induced by the bias applied by a Scanning-Tunneling Microscopy (STM) tip, at low temperature and in ultra-high vacuum environment. This…

材料科学 · 物理学 2025-01-08 Sylvie Godey , Hugo Therssen , David Guérin , Thierry Melin , Stéphane Lenfant

The photoinduced 3D orientational structures in the films of liquid crystalline polyester, containing azobenzene side groups, are studied both experimentally and theoretically. By using the null ellipsometry and the UV absorption methods,…

材料科学 · 物理学 2007-05-23 A. D. Kiselev , O. Yaroshchuk , Yu. Zakrevskyy , J. Stumpe , J. Lindau

The recent progress in nanotechnology [1,2] and single-molecule spectroscopy [3-5] paves the way for cost-effective organic quantum optical technologies emergent with a promise to real-life devices operating at ambient conditions. In this…

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