Quantum Wire Self-Ordered Growth Seeded by Electron-Beam Lithography (2008)
Dwir, B., Reinhardt, F., Wehman, H., Gustafsson, A., Kapon, E.
Density Dependence of Localized Excitonic Recombination in Quantum Wires (2008)
Vouilloz, F., Oberli, D.Y., Wiesendanger, S., Dwir, B., Reinhardt, F., Kapon, E.
Observation of Many-Body Effects in the Excitonic Spectra of Semiconductor Quantum Wires (2008)
Vouilloz, F., Oberli, D.Y., Dwir, B., Reinhardt, F., Kapon, E.
Berseth, C.-A., Dwir, B., Utke, I., Pier, H., Rudra, A., Iakovlev, V.P., ...
Electron Transport in AlGaAs/GaAs V-Groove Quantum Wires (2008)
Dwir, B., Kaufman, D., Berk, Y., Rudra, A., Palevski, A., Kapon, E.
Conductance Quantization in V-Groove Quantum Wires (2008)
Kaufman, D., Berk, Y., Dwir, B., Rudra, A., Palevski, A., Kapon, E.
Direct Evidence for Quantum Contact Resistance Effects in V-Groove Quantum Wires (2008)
Kaufman, D., Dwir, B., Rudra, A., Utke, I., Palevski, A., Kapon, E.
Electron Beam Induced Deposition of Metallic Tips and Wires for Microelectronics Applications (2008)
Utke, I., Dwir, B., Leifer, K., Cicoira, F., Doppelt, P., Hoffmann, P., ...
Focused Electron Beam Deposition of Gold (2008)
Utke, I., Hoffmann, P., Dwir, B., Leifer, K., Kapon, E., Doppelt, P.
Cicoira, F., Leifer, K., Hoffmann, P., Utke, I., Dwir, B., Laub, D., ...
Site- and Energy-Controlled Pyramidal Quantum Dot Heterostructures (2008)
Kapon, E., Pelucchi, E., Watanabe, S., Malko, A., Baier, M. H., Leifer, K., ...
Observation of charged excitons in V-groove quantum wires (2008)
Otterburg, T., Oberli, D.Y., Dupertuis, M.-A., Dwir, B., Pelucchi, E., Kapon, E.
Properties of GaAs/AlGaAs Quantum Wells Grown by OMVPE using Vicinal GaAs Substrates (2008)
Rudra, A., Pelucchi, E., Oberli, D.Y., Moret, N., Dwir, B., Kapon, E.
Dense Uniform Arrays of Site-Controlled GaAs/AlGaAs Quantum Dots Grown in Inverted Pyramids (2008)
Watanabe, S., Pelucchi, E., Dwir, B., Baier, M., Leifer, K., Kapon, E.
Enhancement of the Binding Energy of Charged Excitons in Disordered Quantum Wires (2008)
Otterburg, T., Oberli, D.Y., Dupertuis, M.-A., MoretvN., Pelucchi, E., Dwir, B., ...
Patterning of Confined-State Energies in Site-Controlled Semiconductor Quantum Dots (2008)
Watanabe, S., Pelucchi, E., Leifer, K., Malko, A., Dwir, B., Kapon, E.
Step Ordering Induced by Nonplanar Patterning of GaAs surfaces (2008)
Da Volta, A., Vvedensky, D.D., Gogneau, N., Pelucchi, E., Rudra, A., Dwir, B., ...
Luttinger-liquid behavior in weakly disordered quantum wires (2008)
Levy, E., Tsukernik, A., Karpovski, M., Palevski, A., Dwir, B., Pelucchi, E., ...
Pelucchi, E, Moret, N., Dwir, B., Oberli, D.Y., Rudra, A., Gogneau, N., ...
Site-controlled single quantum wire integrated into a photonic crystal membrane microcavity (2008)
Atlasov, K., Karlsson, K.F., Deichsel, E., Rudra, A., Dwir, B., Kapon, E.
DNA Nanopositioning and Alignement by Electron-Beam-Induced Surface Chemical Patterning (2008)
Klinov, D., Atlasov, K., KotlyarvA., Dwir, B., Kapon, E.
High-resolution atomic force microscopy of duplex and triplex DNA molecules (2008)
Klinov, D., Dwir, B., Kapon, E., Borovok, N., Molotsky, T., Kotlyar, A.
Pelucchi, E., Watanabe, S., Leifer, K., Zhu, Q., Dwir, B., De Los Rios, P., ...
Chemical Beam Epitaxy and Photoluminescence Characteristics of Ingaasp/Inp Braqwet Modulators (2007)
Carlin, J. F., Dwir, B., Glick, M., Monnard, R., Rudra, A., Dupertuis, M. A., ...
We report on the growth of barrier, reservoir and quantum well electron transfer (BRAQWET) structures using chemical beam epitaxy. The photoluminescence spectra of the structures are affected by the...
Glick, M., Monnard, R., Dwir, B., Carlin, J. F., Rudra, A., Dupertuis, M. A., ...
We have measured phase modulation in the first chemical beam epitaxy grown InGaAsP/InP barrier, reservoir, and quantum well electron transfer structures. We obtain a negative refractive index change,...
Optimized Band-Structure Design of Ingaasp Braqwet Structures (2007)
Dwir, B., Monnard, R., Glick, M., Dupertuis, M. A.
We developed InGaAsP BRAQWET (barrier, reservoir, and quantum-well electron transfer) structures using numerical modeling to optimize the band structure. The main improvement was achieved by...
Site- and energy-controlled pyramidal quantum dot heterostructures (2007)
Kapon, E., Pelucchi, E., Watanabe, S., Malko, A., Baier, M. H., Leifer, K., ...
The formation mechanisms, structure and optoelectronic properties of Ga(In)As/(Al)GaAs quantum dot (QD) heterostructures grown by organometallic chemical vapor deposition on patterned (111)B GaAs...
Microstructure and electrical properties of pure 110 K phase in the BiPbSrCaCuO system (2007)
Holguin, E, Berger, H, Levy, F, Dwir, B, Pavuna, D, Burri, G
The temperature dependence of the DC resistivity and AC magnetic susceptibility was investigated in bulk ceramics of the BiPbSrCaCuO system with 2212-free (2223) phase. The temperature domain needed...
Kellett, B.J, James, J.H, Gauzzi, A, Dwir, B, Pavuna, D, Reinhart, F.K
Superconducting YBa2Cu3O7-δ (YBCO) thin films have been grown in situ on Si with conducting indium-tin-oxide (ITO) buffer layers. ITO allows YBCO to be electrically connected to the underlying Si...
Superconducting YBa2Cu3O7-δ thin films on GaAs with conducting indium-tin-oxide buffer layers (2007)
Kellett, B.J, Gauzzi, A, James, J.H, Dwir, B, Pavuna, D, Reinhart, F.K
Superconducting YBa2Cu3O7-δ (YBCO) thin films have been grown in situ on GaAs with conducting indium-tin-oxide (ITO) buffer layers. Superconducting onset is about 92 K with zero resistance at 60 K....
Magnetic and transport properties of superconducting (YBa2Cu3O7-δ)1-xAgx ceramics (2007)
Laborde, O, Souletie, B, Guillot, M, Capponi, J.J, Lejay, P, Tholence, J.L, ...
The introduction of silver in the intergranular space of YBa2Cu3O7 ceramics improves their normal state electrical and mechanical properties. The authors report a study of such composites of which...
Critical current and electronic properties of YBCO-Ag compounds (2007)
Dwir, B, Affronte, M, Pavuna, D
We have found that in YBCO-Ag ceramic compounds Ag fills the intergranular space ('holes') without affecting Tc. Normal-state resistivity is decreased by approximately equals × 100 when adding up to...
In-situ superconducting YBa2Cu3O7 thin films grown by ion beam co-deposition (2007)
James, J.H, Kellett, B.J, Gauzzi, A, Dwir, B, Pavuna, D
The authors present superconducting YBa2C3O7 (YBCO) thin films grown in-situ by three-ion-beam sputtering. Y, Y2O3, Cu, Cu2O, BaF2 and BaCO3 sputter targets have been investigated. The highest...
A simple high-temperature superconducting thin-film optical bolometer (2007)
Dwir, B, Pavesi, L, James, J.H, Kellett, B, Pavuna, D, Reinhart, F.K
The authors have demonstrated the operation of a simple optical bolometer by irradiating a constriction in a Y1Ba2Cu3O7-δ thin film with chopped laser light at λ=633 nm. The change in film...
Evidence for enhancement of critical current by intergrain Ag in YBaCuO-Ag ceramics (2007)
Dwir, B, Affronte, M, Pavuna, D
The authors report the evidence for enhancement of critical current density Jc by ~50%, which occurs when ~10 wt.% Ag is added to Y1Ba2Cu3O7-δ ceramics. The maximal Jc (~700 A/cm2 at T=77 K) appears...
Dwir, B, Pavuna, D, Affronte, M, Berger, H, Tholence, J.L
The authors present the percolation and electronic properties of (Y1Ba2Cu3O7-δ)1-xAgx compounds in which silver fills the intergranular space without reducing Tc, which remains at 92±1 K....
Preparation of YBCO thin films by a four ion beam co-deposition system (2007)
Michel, S, James, J.H, Dwir, B, Affronte, M, Kellett, B, Pavuna, D
We present preliminary results for thin films grown with a recently commissioned ion beam codeposition system designed for in situ growth and etching of YBCO films. The apparatus consists of a...
Tunneling characteristics of YBa2Cu3O7-δ-Pb window-type Josephson junctions (2007)
The authors present the results of tunneling measurements done on window-type, native-barrier YBa2Cu3O7-δ-Pb junctions. They show features in the I-V curves which are related to the gap of...
A sensitive YBaCuO thin film bolometer with ultrawide wavelength response (2007)
The authors have constructed two types of high-temperature superconducting (HTSC) bolometers, whose performance is essentially wavelength independent from λ~0.6 to 450 μm: The first is a...
Evidence for improvement of critical current by Ag in YBaCuO-Ag thick films (2007)
Dwir, B, Kellett, B, Mieville, L, Pavuna, D
The evidence is reported for enhancement of critical current density Jc in YBa2Cu3O7-δ thick films with the addition of Ag, which is correlated with improvements in structural properties. An...
Window-type tunnel devices on YBa2Cu3O7-x thin films (2007)
James, J.H, Dwir, B, Affronte, M, Munzner, A, Naucler, T, Kellet, B.J, ...
The authors present the first YBa2Cu3O7-x-Pb tunnelling measurements using window-type tunnel devices. YBa2Cu3O7-x (YBCO) thin films are grown in-situ by dual Ar+ ion beam sputtering. Tunnel barriers...
Studies on radiation detectors using high-Tc superconductors (2007)
Bloyet, D, Robbes, D, Langlois, P, Gilabert, A, Aboudihab, I, Kreisler, A, ...
A wide range of photodetectors has been investigated, at various wavelengths and in various time domain operating conditions (from low frequency modulated cw sources to pulsed sources). The most...
Preparation, processing and tunneling in YBa2Cu3O7-δ-Pb native-barrier structures (2007)
Frangi, F, Dwir, B, James, J.H, Gauzzi, A, Pavuna, D
The authors have developed a procedure for the preparation of small (40×40 μm2) window-type YBa2Cu3O7-δ-Pb junctions with YSZ insulator and native tunnel barrier. They present the patterning...
Focused electron beam induced deposition of gold and rhodium (2007)
Hoffmann, P, Utke, I, Cicoira, F, Dwir, B, Leifer, K, Kapon, E, ...
Focused electron beam induced deposition of gold (2007)
Utke, I, Hoffmann, P, Dwir, B, Leifer, K, Kapon, E, Doppelt, P
Focused electron beam induced deposition of high resolution magnetic scanning probe tips (2007)
Utke, I, Cicoira, F, Jaenchen, G, Hoffmann, P, Scandella, L, Dwir, B, ...
Cicoira, F, Leifer, K, Hoffmann, P, Utke, I, Dwir, B, Laub, D, ...
Cicoira, F, Leifer, K, Hoffmann, P, Utke, I, Dwir, B, Laub, D, ...
Dense uniform arrays of site-controlled quantum dots grown in inverted pyramids (2007)
Watanabe, S, Pelucchi, E, Dwir, B, Baier, M, Leifer, K, Kapon, E
Perentes, A., Utke, I., Dwir, B., Leutenegger, M., Lasser, T., Hoffmann, P., ...
We report on the fabrication of two-dimensional arrays of nano-optical apertures in gold layers by electron beam lithography (EBL) on a transparent glass substrate. 30 x 30 μ m(2) large arrays of...
Buhlmann, S., Dwir, B., Baborowski, J., Muralt, P.
Epitaxial 50 nm and 200 nm thick films of Pb(Zr0.40Ti0.60)O-3 (PZT) have been deposited by reactive rf magnetron sputtering on conductive Nb-doped SrTiO3(100) (STO). The patterning process involved...