Mapping bound plasmon propagation on a nanoscale stripe waveguide using quantum dots: influence of spacer layer thickness

• Chamanei S. Perera,
• Alison M. Funston,
• Han-Hao Cheng and
• Kristy C. Vernon

Beilstein J. Nanotechnol. 2015, 6, 2046–2051, doi:10.3762/bjnano.6.208

• for the stripe waveguides was found to be around 20 nm. Authors believe that the findings of this paper prove beneficial for the development of plasmonic devices utilising stripe waveguides. Keywords: photoluminescence; plasmonics; quantum dot; spacer layer; stripe waveguide; Introduction Plasmons

• miniaturised devices, and plasmonics is a possible solution that can provide both the high speed and miniaturisation [2][3]. Plasmonics enables the squeezing of optical waves into miniscule structures and manipulating these waves to achieve all-optical circuits. Metal waveguides are a popular method to route

Nonlinear optical properties of near-infrared region Ag₂S quantum dots pumped by nanosecond laser pulses

• Li-wei Liu,
• Si-yi Hu,
• Yin-ping Dou,
• Tian-hang Liu,
• Jing-quan Lin and
• Yue Wang

Beilstein J. Nanotechnol. 2015, 6, 1781–1787, doi:10.3762/bjnano.6.182

• . In the last ten years, the study and development of QDs has rapidly progressed, and also influenced other research areas, such as nonlinear optics, plasmonics and biosensors. The special optical properties of QDs include good resistance to photo-bleaching, large absorption cross section, long

Atomic scale interface design and characterisation

• Carla Bittencourt,
• Chris Ewels and
• Arkady V. Krasheninnikov

Beilstein J. Nanotechnol. 2015, 6, 1708–1711, doi:10.3762/bjnano.6.174

• their properties [16][17]. Besides dealing with fundamental questions, contributions emphasize possible applications of the remarkable physical and chemical properties of this class of materials such as thermoelectrics [18], plasmonics [19] and gas sensing [20]. In the future, spatial control of doping

Possibilities and limitations of advanced transmission electron microscopy for carbon-based nanomaterials

• Xiaoxing Ke,
• Carla Bittencourt and
• Gustaaf Van Tendeloo

Beilstein J. Nanotechnol. 2015, 6, 1541–1557, doi:10.3762/bjnano.6.158

• high-resolution electron-loss spectrometers has greatly transformed the field of plasmonics and dielectric property measurements using valence EELS (VEELS). Different from ELNES which deals with the core-loss spectrum, VEELS focuses on the low-loss part of the EELS spectrum in the range of 0–50 eV and

• ], claimed that the commonly referred π and π+σ peaks are not surface plasmons but single-particle interband excitations. Nevertheless, VEELS on graphene has opened up a venue to both the fundamental study and further applications in optoelectronics, plasmonics and transformative optics using carbon-based

Polymer blend lithography for metal films: large-area patterning with over 1 billion holes/inch²

• Cheng Huang,
• Alexander Förste,
• Stefan Walheim and
• Thomas Schimmel

Beilstein J. Nanotechnol. 2015, 6, 1205–1211, doi:10.3762/bjnano.6.123

• lithography method has been used to study the surface plasmonics of random nano-hole arrays in metal films [26][27]. Since the skin depth, and therefore the transmission of thin films, of Cu, Au and Ag is relatively high, we selected aluminum, which shows a high reflectivity in the range of 220 to 650 nm

• be used for various applications, e.g., in cell adhesion studies, for the immobilization of biomaterials, for plasmonics such as optical filters or as resist layers for anisotropic reactive ion etching. The wavelength-selective optical transmission of our perforated films due to the localized surface

Superluminescence from an optically pumped molecular tunneling junction by injection of plasmon induced hot electrons

• Kai Braun,
• Xiao Wang,
• Andreas M. Kern,
• Hilmar Adler,
• Heiko Peisert,
• Thomas Chassé,
• Dai Zhang and
• Alfred J. Meixner

Beilstein J. Nanotechnol. 2015, 6, 1100–1106, doi:10.3762/bjnano.6.111

• electron from above the Fermi level (upper level), hence feeding photons back by stimulated emission resonant with the gap mode. The system reflects many essential features of a superluminescent light emitting diode. Keywords: inelastic tunneling; light emitting diode; quantum plasmonics; scanning near

• results demonstrate how optical enhancement inside the plasmonic cavity can be further increased by localization via tunneling through a molecule. We anticipate that stimulated emission from a tunneling junction will advance our fundamental understanding of quantum plasmonics and lead to new analytical

Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures

• Alexander G. Milekhin,
• Nikolay A. Yeryukov,
• Larisa L. Sveshnikova,
• Tatyana A. Duda,
• Ekaterina E. Rodyakina,
• Victor A. Gridchin,
• Evgeniya S. Sheremet and
• Dietrich R. T. Zahn

Beilstein J. Nanotechnol. 2015, 6, 749–754, doi:10.3762/bjnano.6.77

• Investigations of Raman scattering in nanostuctures such as nanocrystals (NCs) are limited by a low Raman cross-section because of the very low scattering volume of the nanostructures. Surface-enhanced Raman spectroscopy (SERS) taking advantage of plasmonics leads to a remarkable increase of the Raman

Synergic combination of the sol–gel method with dip coating for plasmonic devices

• Cristiana Figus,
• Maddalena Patrini,
• Francesco Floris,
• Lucia Fornasari,
• Paola Pellacani,
• Gerardo Marchesini,
• Andrea Valsesia,
• Flavia Artizzu,
• Daniela Marongiu,
• Michele Saba,
• Franco Marabelli,
• Andrea Mura,
• Giovanni Bongiovanni and
• Francesco Quochi

Beilstein J. Nanotechnol. 2015, 6, 500–507, doi:10.3762/bjnano.6.52

• an extended time and inducing a suitable reduction of the regeneration time of the chip. Keywords: biosensors; nanodevices; plasmonics; sol–gel; thin films; Introduction Plasmonic nanostructures have gained increasing attention for their surface plasmon resonance (SPR)-related properties, which can

Hollow plasmonic antennas for broadband SERS spectroscopy

• Gabriele C. Messina,
• Mario Malerba,
• Pierfrancesco Zilio,
• Ermanno Miele,
• Michele Dipalo,
• Lorenzo Ferrara and
• Francesco De Angelis

Beilstein J. Nanotechnol. 2015, 6, 492–498, doi:10.3762/bjnano.6.50

• field enhancement; plasmonics; Raman spectroscopy; SERS; Introduction Cells are extremely complex systems that consist of hundreds of different molecules that can react and give rise to many different chemical processes. In addition to the complexity of the cellular chemical environment, it must also

• environment without requiring the labelling of specific features of interest. However, the main drawback of Raman spectroscopy in this regard is the intrinsically low signal intensity, which leads to unsuitably high detection limits. In this respect, the exploitation of plasmonics for enhancing Raman signal

• to these results was funded by the European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013)/ERC Grant Agreement number 616213, CoG: Neuro-Plasmonics.

Green preparation and spectroscopic characterization of plasmonic silver nanoparticles using fruits as reducing agents

• Jes Ærøe Hyllested,
• Marta Espina Palanco,
• Nicolai Hagen,
• Klaus Bo Mogensen and
• Katrin Kneipp

Beilstein J. Nanotechnol. 2015, 6, 293–299, doi:10.3762/bjnano.6.27

• excitation. Keywords: fruits; green synthesis; luminescence; plants; plasmonics; SERS; silver cluster; silver nanoparticles; Introduction Metal nanoparticles in various size ranges play an increasingly important role in many different fields of science, technology and medicine ranging from applications as

Localized surface plasmon resonances in nanostructures to enhance nonlinear vibrational spectroscopies: towards an astonishing molecular sensitivity

• Dan Lis and
• Francesca Cecchet

Beilstein J. Nanotechnol. 2014, 5, 2275–2292, doi:10.3762/bjnano.5.237

Hybrid spin-crossover nanostructures

• Carlos M. Quintero,
• Gautier Félix,
• Iurii Suleimanov,
• José Sánchez Costa,
• Gábor Molnár,
• Lionel Salmon,
• William Nicolazzi and
• Azzedine Bousseksou

Beilstein J. Nanotechnol. 2014, 5, 2230–2239, doi:10.3762/bjnano.5.232

• of the probe at fixed wavelengths. Active plasmonic devices Currently, one of the most dynamic research area in the nanosciences is plasmonics. Surface plasmons provide unprecedented capabilities for manipulating electromagnetic waves at the nanoscale and have opened the door to unique photonic

Dye-doped spheres with plasmonic semi-shells: Lasing modes and scattering at realistic gain levels

• Nikita Arnold,
• Boyang Ding,
• Calin Hrelescu and
• Thomas A. Klar

Beilstein J. Nanotechnol. 2013, 4, 974–987, doi:10.3762/bjnano.4.110

• obscured by the broad spectral features of the lower order modes. We further show that the angular distribution of the far-field scattering of the spasing modes is by no means dipole-like and is very sensitive to the geometry of the structure. Keywords: gain; metamaterials; nanophotonics; plasmonics

Challenges in realizing ultraflat materials surfaces

• Takashi Yatsui,
• Wataru Nomura,
• Fabrice Stehlin,
• Olivier Soppera,
• Makoto Naruse and
• Motoichi Ohtsu

Beilstein J. Nanotechnol. 2013, 4, 875–885, doi:10.3762/bjnano.4.99

• principles and concepts of DPP technology differ significantly from those of conventional wave-optical technologies such as photonic crystals [29], plasmonics [30], metamaterials [31], or quantum-dot photonic devices [32], in which the size and function are governed by the light diffraction limit. Therefore

Probing the plasmonic near-field by one- and two-photon excited surface enhanced Raman scattering

• Katrin Kneipp and
• Harald Kneipp

Beilstein J. Nanotechnol. 2013, 4, 834–842, doi:10.3762/bjnano.4.94

• . Keywords: near-field; plasmonics; silver nanoaggregates; single molecule; surface-enhanced Raman scattering (SERS); Introduction The resonance frequencies of collective oscillations of the electrons in the conduction band in metal nanostructures, which are called surface plasmons, fall in the optical

k-space imaging of the eigenmodes of sharp gold tapers for scanning near-field optical microscopy

• Martin Esmann,
• Simon F. Becker,
• Bernard B. da Cunha,
• Jens H. Brauer,
• Ralf Vogelgesang,
• Petra Groß and
• Christoph Lienau

Beilstein J. Nanotechnol. 2013, 4, 603–610, doi:10.3762/bjnano.4.67

• frequency domain. Our approach has the potential to considerably improve the signal-to-background ratio in spectroscopic experiments at the nanoscale. Keywords: adiabatic nanofocusing; Fourier optics; metallic wire modes; plasmonics; scanning near-field optical microscopy (SNOM); Introduction Metallic

• within the field of plasmonics. The concept of SPP to LSP transformation has been investigated theoretically and experimentally for different metal nanostructures [2][3][4][5] in both the adiabatic [5][6][7] and the non-adiabatic [8] limit. Theoretically, it has been shown to be particularly promising in

3D nano-structures for laser nano-manipulation

• Gediminas Seniutinas,
• Lorenzo Rosa,
• Gediminas Gervinskas,
• Etienne Brasselet and
• Saulius Juodkazis

Beilstein J. Nanotechnol. 2013, 4, 534–541, doi:10.3762/bjnano.4.62

• to be a trapping force of 2 pN/W/μm2 (numerical result) exerted on a 50-nm diameter bead in water. The simulations were based on the analytical Lorentz force model. Keywords: extraordinary transmission; near field; optical tweezing; plasmonics; reactive ion etching; self-induced back-action

• -guiding of nano-particles using plasmonic devices [12][13] can be realized by using patterns of hole arrays and grooves. The extraordinary transmission in plasmonics can be exploited in metal hole arrays (MHA) at visible and IR spectral wavelengths as a promising method to introduce narrow-band wavelength

High-resolution electrical and chemical characterization of nm-scale organic and inorganic devices

• Pierre Eyben

Beilstein J. Nanotechnol. 2013, 4, 318–319, doi:10.3762/bjnano.4.35

• reduced exciton diffusion lengths (and thus more efficient collection) through the fabrication of an entangled mixture of the acceptor–donor layers, the addition of light scattering nanoparticles or metallic nanoparticles (spectrum harvesting through plasmonics) in the active layer or even wavelength

Near-field effects and energy transfer in hybrid metal-oxide nanostructures

• Ulrich Herr,
• Barat Achinuq,
• Cahit Benel,
• Giorgos Papageorgiou,
• Manuel Goncalves,
• Johannes Boneberg,
• Paul Leiderer,
• Paul Ziemann,
• Peter Marek and
• Horst Hahn

Beilstein J. Nanotechnol. 2013, 4, 306–317, doi:10.3762/bjnano.4.34

• Eu fluorescence can be suppressed by covering the nanoantennas with a 10 nm thick SiOx layer. Keywords: confocal microscopy; energy transfer; field enhancement; light harvesting; luminescence; nano-antennas; nanosphere lithography; nanostructures; plasmonics; simulation; TiO2 nanoparticles

Plasmonic oligomers in cylindrical vector light beams

• Mario Hentschel,
• Jens Dorfmüller,
• Harald Giessen,
• Sebastian Jäger,
• Andreas M. Kern,
• Kai Braun,
• Dai Zhang and
• Alfred J. Meixner

Beilstein J. Nanotechnol. 2013, 4, 57–65, doi:10.3762/bjnano.4.6

• , a project which has, to the best of our knowledge, not been attempted so far. Keywords: near-field microscopy; oligomers; plasmons; radial and azimuthal polarization; Introduction Plasmonics is the optics of metal nanoparticles. If an external light field impinges on a metal nanoparticle

• , collective oscillations of the quasi-free conduction electrons are excited. The electron charge cloud is displaced with respect to the fixed ionic background and thus causes local electric fields. The main benefit afforded by plasmonics is its ability to concentrate incoming electromagnetic energy into deep

• hybridize giving rise to new collective orbitals [1]. In plasmonics this coupling is mediated by the plasmonic near fields. In contrast to molecular physics, plasmonics allows us to nearly arbitrarily change the spatial arrangement, the number, and the properties of the constituent particles [2][3]. We can

Plasmonics-based detection of H₂ and CO: discrimination between reducing gases facilitated by material control

• Gnanaprakash Dharmalingam,
• Nicholas A. Joy,
• Benjamin Grisafe and
• Michael A. Carpenter

Beilstein J. Nanotechnol. 2012, 3, 712–721, doi:10.3762/bjnano.3.81

• sensors for turbine engines, solid-oxide fuel cells, and other high-temperature applications. Keywords: hydrogen detection; nanocomposites gold nanoparticles; optical sensor; plasmonics; physical vapor deposition; surface plasmon resonance; Introduction Sensors based on surface plasmon resonance have

• , and particularly for plasmonics-based gas sensing. The extremely high sensitivity of the plasmon resonance peak to changes in the free-electron density of gold nanoparticles or a change in the dielectric function of the metal-oxide host material due to adsorbate reactions on surfaces makes this a

Assessing the plasmonics of gold nano-triangles with higher order laser modes

• Laura E. Hennemann,
• Andreas Kolloch,
• Andreas Kern,
• Josip Mihaljevic,
• Johannes Boneberg,
• Paul Leiderer,
• Alfred J. Meixner and
• Dai Zhang

Beilstein J. Nanotechnol. 2012, 3, 674–683, doi:10.3762/bjnano.3.77

• study called plasmonics. In addition, such particle plasmons yield an evanescent electromagnetic field at the outline of the nano-particles. This so-called near field can be highly enhanced and strongly confined in space. So far, the near field at the outline of nano-particles in general [2] and nano

Ordered arrays of nanoporous gold nanoparticles

• Dong Wang,
• Ran Ji,
• Arne Albrecht and
• Peter Schaaf

Beilstein J. Nanotechnol. 2012, 3, 651–657, doi:10.3762/bjnano.3.74

• more attention due to their potential applications in plasmonics [1][2], magnetic memories [3], DNA detection [4], and catalytic nanowire growth [5]. Nanoporous gold is very interesting for application in catalysis [6][7], for sensors [8], for actuators [9][10], and as electrodes for electrochemical

Plasmonic nanostructures fabricated using nanosphere-lithography, soft-lithography and plasma etching

• Manuel R. Gonçalves,
• Taron Makaryan,
• Fabian Enderle,
• Stefan Wiedemann,
• Alfred Plettl,
• Othmar Marti and
• Paul Ziemann

Beilstein J. Nanotechnol. 2011, 2, 448–458, doi:10.3762/bjnano.2.49

• coated PS spheres of the same size, indicate an enhanced absorbance, which may be due to light confinement effects. Films of other materials and heterogeneous metal–insulator–metal films, of great importance in plasmonics, may be prepared in the future as well. For a better understanding, however

Formation of precise 2D Au particle arrays via thermally induced dewetting on pre-patterned substrates

• Dong Wang,
• Ran Ji and
• Peter Schaaf

Beilstein J. Nanotechnol. 2011, 2, 318–326, doi:10.3762/bjnano.2.37

• nanoparticles, due to their wide range of potential applications in plasmonics [1][2], magnetic memories [3], DNA detection [4], and catalysis for nanowire and nanofiber growth [5][6]. Nanoparticle arrays are typically fabricated either by chemical processes based on self-assembly or by lithography based