Impact of device design on the electronic and optoelectronic properties of integrated Ru-terpyridine complexes

• Max Mennicken,
• Sophia Katharina Peter,
• Corinna Kaulen,
• Ulrich Simon and
• Silvia Karthäuser

Beilstein J. Nanotechnol. 2022, 13, 219–229, doi:10.3762/bjnano.13.16

• ]. They are formed by two 2.2 nm tunneling gaps bridged by Ru(MPTP)2-complexes strongly coupled to the electrodes and to the AuNP. In this scenario, a transition voltage of 1.17 eV is needed to align the HOMO levels of the Ru complexes with the EF of the electrodes, despite the considerably smaller energy

• offset between EF and HOMO of ΔEH = 0.33 eV. The relatively high transition voltage must be overcome to enable electrical switching of Ru2+/3+ in this device geometry. However, in a device consisting of three AuNPs, for example (Supporting Information File 1, section 8), in addition to single-AuNP

Electromigrated electrical optical antennas for transducing electrons and photons at the nanoscale

• Arindam Dasgupta,
• Mickaël Buret,
• Nicolas Cazier,
• Marie-Maxime Mennemanteuil,
• Reinaldo Chacon,
• Kamal Hammani,
• Jean-Claude Weeber,
• Juan Arocas,
• Laurent Markey,
• Gérard Colas des Francs,
• Alexander Uskov,
• Igor Smetanin and
• Alexandre Bouhelier

Beilstein J. Nanotechnol. 2018, 9, 1964–1976, doi:10.3762/bjnano.9.187

• and for interconnecting an electronic control layer to a photonic architecture. Keywords: electromigration; Fowler–Nordheim; hot-electron emission; inelastic electron tunneling; optical antennas; transition voltage; tunnel junction; Introduction The constant evolution of information technologies

• representation isolates two extreme cases of bias polarization: and separated by a minimum in the plot indicating the cross-over between the transport regimes. The effective barrier height of the electrodes may be directly inferred from this minimum, commonly referred to as the transition voltage Vt. The

• Fowler–Nordheim plot of the JT(Vdc) characteristics discussed in Figure 3 is displayed in Figure 4a. Two clear minima are identified with respect to bias polarity at nearly symmetric values 1/ = −3.51 ± 0.16 V−1 and 1/ = 3.5 ± 0.09 V−1, corresponding to an average transition voltage |Vt| = 0.28 V. It is

Dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric field

• Emil Petrescu and
• Cristina Cirtoaje

Beilstein J. Nanotechnol. 2018, 9, 233–241, doi:10.3762/bjnano.9.25

• support, θ(−d/2) = θ(d/2) = 0, we obtain the threshold voltage for the Fréedericksz transition: where is the Fréedericksz transition voltage of the nematic. Therefore, when the electric field is applied for a short period of time, the critical voltage for Fréedericksz transition increases in the cell

Deposition of exchange-coupled dinickel complexes on gold substrates utilizing ambidentate mercapto-carboxylato ligands

• Martin Börner,
• Laura Blömer,
• Marcus Kischel,
• Peter Richter,
• Georgeta Salvan,
• Dietrich R. T. Zahn,
• Pablo F. Siles,
• Maria E. N. Fuentes,
• Carlos C. B. Bufon,
• Daniel Grimm,
• Oliver G. Schmidt,
• Daniel Breite,
• Bernd Abel and
• Berthold Kersting

Beilstein J. Nanotechnol. 2017, 8, 1375–1387, doi:10.3762/bjnano.8.139

• -rolled-up nanomembranes [63][64]. Standard two point measurements at room temperature were carried out for the electrical characterization of the heterojunctions (Supporting Information File 1). The data analysis provides a characteristic transition voltage (VT) of 0.50 ± 0.05 V, a value which, albeit

Charge transport in organic nanocrystal diodes based on rolled-up robust nanomembrane contacts

• Vineeth Kumar Bandari,
• Lakshmi Varadharajan,
• Longqian Xu,
• Abdur Rehman Jalil,
• Mirunalini Devarajulu,
• Pablo F. Siles,
• Feng Zhu and
• Oliver G. Schmidt

Beilstein J. Nanotechnol. 2017, 8, 1277–1282, doi:10.3762/bjnano.8.129

• )) is shown in Figure 2b, which allows us to determine two transport regimes. The curve has a slope of n = 1.12 for low bias and a slope of n = 2.32 for a high bias. The transition voltage is about 1.2 V. According to the Mott–Gurney Law the transport can be regarded as ohmic in the low bias regime and

Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric field

• Amanda García-García,
• Ricardo Vergaz,
• José F. Algorri,
• Gianluigi Zito,
• Teresa Cacace,
• Antigone Marino,
• José M. Otón and
• Morten A. Geday

Beilstein J. Nanotechnol. 2016, 7, 825–833, doi:10.3762/bjnano.7.74

• accumulate, the sample conductivity increases even at a voltage lower than that at which the single SWCNTs reorient. The threshold voltage can be directly linked to the interactions (i.e., anchoring) between the LC and the SWCNTs, much in the same way as the conventional Freedericksz transition voltage

High electronic couplings of single mesitylene molecular junctions

• Yuki Komoto,
• Shintaro Fujii,
• Tomoaki Nishino and
• Manabu Kiguchi

Beilstein J. Nanotechnol. 2015, 6, 2431–2437, doi:10.3762/bjnano.6.251

• -binding to the electrodes. However, there are little direct experimental results revealing strong metal–molecule couplings. The electronic structure of molecular junctions including metal–molecule couplings can be characterized by current-voltage (I–V) characteristics of molecular junctions. Transition

• voltage spectroscopy [27][28] is one of the methods to characterize energy level of conduction orbitals in junctions by analysing I–V characteristics. Energy level alignment of conduction orbitals with respect to Fermi level of metal electrodes has been examined for the molecular junctions of

Conductance through single biphenyl molecules: symmetric and asymmetric coupling to electrodes

• Karthiga Kanthasamy and
• Herbert Pfnür

Beilstein J. Nanotechnol. 2015, 6, 1690–1697, doi:10.3762/bjnano.6.171

• I–V-curves. Model fits are shown in Supporting Information File 1. All I–V-curves could be fitted with a constant value for E0 = 0.62 ± 0.02 eV, irrespective of the conductance at small voltages. This value is found to be in agreement with the transition voltage measured with transition voltage

Closed-loop conductance scanning tunneling spectroscopy: demonstrating the equivalence to the open-loop alternative

• Chris Hellenthal,
• Kai Sotthewes,
• Martin H. Siekman,
• E. Stefan Kooij and
• Harold J. W. Zandvliet

Beilstein J. Nanotechnol. 2015, 6, 1116–1124, doi:10.3762/bjnano.6.113

• this restriction, recent studies have focussed on the application of transition voltage spectroscopy (TVS) [15][16][17]. By determining the bias voltage at which traditional tunneling is replaced by Fowler–Nordheim transport as a function of the tip–sample distance, the work function can be determined