Bidirectional biomimetic flow sensing with antiparallel and curved artificial hair sensors

• Claudio Abels,
• Antonio Qualtieri,
• Toni Lober,
• Alessandro Mariotti,
• Lily D. Chambers,
• Massimo De Vittorio,
• William M. Megill and
• Francesco Rizzi

Beilstein J. Nanotechnol. 2019, 10, 32–46, doi:10.3762/bjnano.10.4

• circuit was excited with Vexc = +3.3 V DC, while its voltage output was connected to a benchtop digital multimeter (Agilent 34405A). Influence of temperature on micro strain gauges As electrical resistivity of metals is temperature-dependent, a drift in the offset voltage may occur while the flow sensor

Time-resolved universal temperature measurements using NaYF₄:Er³⁺,Yb³⁺ upconverting nanoparticles in an electrospray jet

• Kristina Shrestha,
• Arwa A. Alaulamie,
• Ali Rafiei Miandashti and
• Hugh H. Richardson

Beilstein J. Nanotechnol. 2018, 9, 2916–2924, doi:10.3762/bjnano.9.270

• understand temperature-dependent reactions such as protein unfolding inside microjet/microdroplets and microfluidic systems. Keywords: electrospray; microjet; nanothermometry; temperature measurement; time-resolved measurement; upconverting nanoparticles; Introduction There is need and interest to non

• depending upon the wavelength of the interrogating light. We have shown that the photoluminescence of erbium ions embedded in a wide-band-gap matrix is temperature-dependent [12] and have used the emission to determine the local temperature of optically excited gold nanostructures at an interface. The

• temperature is determined by measuring the ratio of two green photoluminescence bands where the relative intensities are temperature-dependent and related by a Boltzmann factor. We used this thermal sensor to probe the thermal properties at a solid–water interface and found that a nanoscale object optically

Nanoconjugates of a calixresorcinarene derivative with methoxy poly(ethylene glycol) fragments for drug encapsulation

• Alina M. Ermakova,
• Julia E. Morozova,
• Yana V. Shalaeva,
• Victor V. Syakaev,
• Aidar T. Gubaidullin,
• Alexandra D. Voloshina,
• Vladimir V. Zobov,
• Irek R. Nizameev,
• Olga B. Bazanova,
• Igor S. Antipin and
• Alexander I. Konovalov

Beilstein J. Nanotechnol. 2018, 9, 2057–2070, doi:10.3762/bjnano.9.195

• binding of the dye in micelles of macrocycle 3. As shown above, micelles of 3 exhibit temperature-dependent behaviour in the presence of salts, in particular, in 0.9% NaCl solution. So, the change of fluorescence response of the substrate while changing the temperature of 3 + Dox micellar solutions in 0.9

• probe). A temperature-dependent release of substrates from 3 + Dox micelles at physiological temperature is demonstrated in 0.9% NaCl solution. Experimental Materials Calixresorcinarene 1 was synthesized according to a previously reported procedure [36]. mPEG-550 was purchased from Aldrich, pyrene

• ] software packages. DLS, SLS, and zeta-potential measurements were carried out by employing a Zetasizer nano ZS with Dispersion Technology Software 5.00. The measurements were carried out at 25 °C in polystyrene cells, for temperature-dependent DLS measurements (25–65 °C) and SLS measurement, a glass

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

• fairly constant because Joule dissipation is not yet affecting the temperature-dependent resistivity of gold. On increasing Vdc, the temperature of the constriction grows and the conductance starts to fluctuate. The general trend is that G(t) decreases when stepping up Vdc. We also consistently observe a

• is illustrated at t = 200 s in Figure 2a. The applied bias is constant, but G(t) decays towards a stable value. This is understood from the temperature-dependent resistivity of the material: For a given Vdc the current flowing in the constriction dissipates heat and affects in return the temperature

• -dependent resistivity [35]. These conductance fluctuations are typically observed for Vdc ≤ 1.7 V and corresponds to the end of the first phase of voltage increments. When applying higher voltages, G(t) generally drops with a rate rapidly increasing with time. The process is entering a second phase. This

Induced smectic phase in binary mixtures of twist-bend nematogens

• Anamarija Knežević,
• Irena Dokli,
• Marin Sapunar,
• Suzana Šegota,
• Ute Baumeister and
• Andreja Lesac

Beilstein J. Nanotechnol. 2018, 9, 1297–1307, doi:10.3762/bjnano.9.122

• in controlling the self-organizing processes. Keywords: binary mixture; liquid crystals; smectic phase induction; temperature-dependent FTIR; twist-bend nematogen; Introduction Nowadays liquid crystal (LC) substances possess a wide range of uses. However, it is rather rare that a single organic

• technique for determining changes in chemical interactions and molecular geometry in LC phases [37][38][39][40], we investigated the 73 mol % BB mixture using temperature-dependent FTIR measurements. IR spectra were recorded using a KBr pastille method. Since in a binary mixture the cyano group of CBI may

• Information File 1) and temperature-dependent spectra of pure BB (Figure S5, Supporting Information File 1). The absence of new absorption bands in the wide spectral range in the mixture, compared to the spectra of the pure compounds, implicates that CT attraction or even dipole-induced dipole interaction is

Formation and development of nanometer-sized cybotactic clusters in bent-core nematic liquid crystalline compounds

• Yuri P. Panarin,
• Sithara P. Sreenilayam,
• Jagdish K. Vij,
• Anne Lehmann and
• Carsten Tschierske

Beilstein J. Nanotechnol. 2018, 9, 1288–1296, doi:10.3762/bjnano.9.121

• other two peaks are strongly temperature dependent and consequently assigned to the relaxation processes associated with the sample in the cell. The existence of two dielectric relaxation modes in the bent-core nematic phase was previously observed in [54][55]. The higher frequency is assigned to the

• fits to the Arrhenius equation, f(T) = f0 exp(−EA / kBT), where EA is the activation energy. Temperature dependent cluster size (i.e., an average number of molecules involved in a cluster) (open red triangles), ratio of the dielectric strength, Δε1/Δε2 (open blue cirecles), the volume fraction of

Formation mechanisms of boron oxide films fabricated by large-area electron beam-induced deposition of trimethyl borate

• Aiden A. Martin and
• Philip J. Depond

Beilstein J. Nanotechnol. 2018, 9, 1282–1287, doi:10.3762/bjnano.9.120

• , MTI Corporation) under electron beam conditions identical to the temperature-dependent irradiations with a processing time of 30 min. Results and Discussion The volumetric deposition rate of the entire deposit and the height of the deposit at the center of electron beam as functions of the substrate

• processing chamber or precursor material, which increasingly contribute to the EBID process when TMB undergoes rapid thermally stimulated desorption from the surface at higher temperature. The compound stoichiometry across the deposition profile was found to be temperature-dependent. The profile at 26 °C

• surface [14][31]. Consideration of the electron flux-dependent stoichiometry of the deposits must be taken into account to confirm the temperature-dependent mechanism [32]. The electron flux in the regions where diffusion of precursor is the dominant replenishment mechanism at 195 and 271 °C is

P3HT:PCBM blend films phase diagram on the base of variable-temperature spectroscopic ellipsometry

• Barbara Hajduk,
• Henryk Bednarski,
• Bożena Jarząbek,
• Henryk Janeczek and
• Paweł Nitschke

Beilstein J. Nanotechnol. 2018, 9, 1108–1115, doi:10.3762/bjnano.9.102

• optical model parametrizes the spectral dependence of the refractive index n and the extinction coefficient k on the wavelength λ by the following relations: where the temperature-dependent parameters ni and ki, with i = 0, 1 and 2, are the model (fitting) parameters and the coefficients C0 and C1 are the

• numerical constants. It follows from the relations presented above, that at sufficiently long wavelengths both n and k become only temperature-dependent. Additionally, by taking into account the results presented in Figure 2, we can safely assume that k0(T) = 0 for λ > 750 nm. In Figure 3, thicknesses d as

Synthesis and characterization of two new TiO₂-containing benzothiazole-based imine composites for organic device applications

• Anna Różycka,
• Agnieszka Iwan,
• Krzysztof Artur Bogdanowicz,
• Michal Filapek,
• Natalia Górska,
• Damian Pociecha,
• Marek Malinowski,
• Patryk Fryń,
• Agnieszka Hreniak,
• Jakub Rysz,
• Paweł Dąbczyński and
• Monika Marzec

Beilstein J. Nanotechnol. 2018, 9, 721–739, doi:10.3762/bjnano.9.67

• heating stage. A Perkin Elmer DSC8000 calorimeter was used for calorimetric measurements. The temperature calibration procedure was done based on the onset of the melting point of water and indium. The sample was hermetically sealed in an aluminum pan of 30 μL. The temperature-dependent Fourier transform

Electron interactions with the heteronuclear carbonyl precursor H₂FeRu₃(CO)₁₃ and comparison with HFeCo₃(CO)₁₂: from fundamental gas phase and surface science studies to focused electron beam induced deposition

• Ragesh Kumar T P,
• Paul Weirich,
• Lukas Hrachowina,
• Marc Hanefeld,
• Ragnar Bjornsson,
• Helgi Rafn Hrodmarsson,
• Sven Barth,
• D. Howard Fairbrother,
• Michael Huth and
• Oddur Ingólfsson

Beilstein J. Nanotechnol. 2018, 9, 555–579, doi:10.3762/bjnano.9.53

Temperature-tunable lasing from dye-doped chiral microdroplets encapsulated in a thin polymeric film

• Gia Petriashvili,
• Mauro Daniel Luigi Bruno,
• Maria Penelope De Santo and
• Riccardo Barberi

Beilstein J. Nanotechnol. 2018, 9, 379–383, doi:10.3762/bjnano.9.37

• film. Here, we report on the possibility to tune the laser emission as a function of temperature. Using a chiral dopant with temperature dependent solubility, the emitted laser wavelength can be tuned in a range of 40 nm by a temperature variation of 18 °C. The proposed device can have applications in

• systems [6][7][8]. Further, since the PBG spectral position can be shifted, also the laser emission wavelength can be tuned by using external factors as the temperature variations. CLCs are often mixtures of nematic liquid crystal and chiral dopant. A chiral dopant with temperature dependent solubility

• that the laser emission tuning can be obtained preparing the CLC mixture by using a chiral dopant with temperature-dependent solubility. For both emulsion and thin film form, the laser emission wavelength can be tuned. In particular, laser emission from the thin film is tuned over a range of about 40

Design of polar self-assembling lactic acid derivatives possessing submicrometre helical pitch

• Alexej Bubnov,
• Cyril Vacek,
• Michał Czerwiński,
• Terezia Vojtylová,
• Wiktor Piecek and
• Věra Hamplová

Beilstein J. Nanotechnol. 2018, 9, 333–341, doi:10.3762/bjnano.9.33

• attached to longer alkyl chains [20][37]. The electro-optic parameters of the studied compounds are temperature dependent, namely, the spontaneous polarisation and tilt angle, which are extremely important for practical applications [5][44]. However, these parameters can be stabilised by formulation of the

PTFE-based microreactor system for the continuous synthesis of full-visible-spectrum emitting cesium lead halide perovskite nanocrystals

• Chengxi Zhang,
• Weiling Luan,
• Yuhang Yin and
• Fuqian Yang

Beilstein J. Nanotechnol. 2017, 8, 2521–2529, doi:10.3762/bjnano.8.252

• . The red shift shown in Figure 5 suggests that the band gap of the prepared QDs is temperature dependent, which is similar to the behavior of IV, III–V, and II–VI semiconductors. According to the Varshni empirical relationship, Egap(T) = Egap(0) − αT2/(β + T) [38], (Egap(0) is the band gap at 0 K, α is

Alternating current magnetic susceptibility of a ferronematic

• Natália Tomašovičová,
• Jozef Kováč,
• Veronika Gdovinová,
• Nándor Éber,
• Tibor Tóth-Katona,
• Jan Jadżyn and
• Peter Kopčanský

Beilstein J. Nanotechnol. 2017, 8, 2515–2520, doi:10.3762/bjnano.8.251

• higher concentration there is an enhanced tendency for the formation of such aggregates. (iv.) The value of the ac susceptibility in Figure 4 is temperature-dependent, while no such dependence was found for the lower concentration of = 10−4 (see Figures 3–5 of [27]). The fact the χ′ is independent of

Changes of the absorption cross section of Si nanocrystals with temperature and distance

• Michael Greben,
• Petro Khoroshyy,
• Sebastian Gutsch,
• Daniel Hiller,
• Margit Zacharias and
• Jan Valenta

Beilstein J. Nanotechnol. 2017, 8, 2315–2323, doi:10.3762/bjnano.8.231

• the function presented in Equation 20 (Figure 4b) for our ML structures. Temperature dependence of the ACS Contrary to the common assumption, the ACS should be generally considered as temperature-dependent [5][29]. There are two mechanisms responsible for this dependence. First, for the phonon

Comprehensive investigation of the electronic excitation of W(CO)₆ by photoabsorption and theoretical analysis in the energy region from 3.9 to 10.8 eV

• Mónica Mendes,
• Khrystyna Regeta,
• Filipe Ferreira da Silva,
• Nykola C. Jones,
• Søren Vrønning Hoffmann,
• Gustavo García,
• Chantal Daniel and
• Paulo Limão-Vieira

Beilstein J. Nanotechnol. 2017, 8, 2208–2218, doi:10.3762/bjnano.8.220

• further in the next sections. A. Low-lying electronic states (below 4.0 eV) The temperature-dependent absorption studies of Beach and Gray [2] of W(CO)6 in a solvent report a weak band at 3.794 eV, which was assigned to a spin-forbidden d→d transition. In contrast, our calculations do not provide evidence

Substrate and Mg doping effects in GaAs nanowires

• Perumal Kannappan,
• Nabiha Ben Sedrine,
• Jennifer P. Teixeira,
• Maria R. Soares,
• Bruno P. Falcão,
• Maria R. Correia,
• Nestor Cifuentes,
• Emilson R. Viana,
• Marcus V. B. Moreira,
• Geraldo M. Ribeiro,
• Alfredo G. de Oliveira,
• Juan C. González and
• Joaquim P. Leitão

Beilstein J. Nanotechnol. 2017, 8, 2126–2138, doi:10.3762/bjnano.8.212

• level structure of the nanowires, a detailed investigation on the temperature-dependent PL is required. Before the presentation of the results, we will mention briefly the common temperature dependence of the bandgap in a semiconductor. As the temperature increases, the thermal expansion coefficient of

High-stress study of bioinspired multifunctional PEDOT:PSS/nanoclay nanocomposites using AFM, SEM and numerical simulation

• Alfredo J. Diaz,
• Hanaul Noh,
• Tobias Meier and
• Santiago D. Solares

Beilstein J. Nanotechnol. 2017, 8, 2069–2082, doi:10.3762/bjnano.8.207

• sensing humidity [21] and for temperature-dependent switching of electrochemical behavior using nanoclay substitutes [22]. Recently, nacre-mimetic electrically conductive nanocomposites have been reported, one of which exhibited good electrical conductivity and excellent mechanical properties [23] and the

Laser processing of thin-film multilayer structures: comparison between a 3D thermal model and experimental results

• Babak B. Naghshine and
• Amirkianoosh Kiani

Beilstein J. Nanotechnol. 2017, 8, 1749–1759, doi:10.3762/bjnano.8.176

• Marla et al. who solved the 1D equation for temperature-dependent properties [20]. In this paper, a transient 3D model, which has been previously proven capable of precisely predicting the temperature and ablation zone for a bulk material [21], has been modified and used for a thin-film multilayer

Near-infrared-responsive, superparamagnetic Au@Co nanochains

• Varadee Vittur,
• Arati G. Kolhatkar,
• Shreya Shah,
• Irene Rusakova,
• Dmitri Litvinov and
• T. Randall Lee

Beilstein J. Nanotechnol. 2017, 8, 1680–1687, doi:10.3762/bjnano.8.168

• SQUID magnetometer with fields up to 5 T. The temperature-dependent magnetization curves varying between 5 and 400 K were measured in an applied magnetic field of 100 Oe. SEM images of the Au@Co nanochains at (a) low magnification and (b) high magnification. TEM images of the Au@Co nanochains: (a,b) low

Process-specific mechanisms of vertically oriented graphene growth in plasmas

• Subrata Ghosh,
• Shyamal R. Polaki,
• Niranjan Kumar,
• Sankarakumar Amirthapandian,
• Mohamed Kamruddin and
• Kostya (Ken) Ostrikov

Beilstein J. Nanotechnol. 2017, 8, 1658–1670, doi:10.3762/bjnano.8.166

• the temperature-dependent growth rates where the activation energy is found to be as low as 0.57 eV. It is shown that the growth rate and the structural quality of the films could be enhanced by (a) increasing the substrate temperature, (b) decreasing the distance between the microwave plasma source

Formation of ferromagnetic molecular thin films from blends by annealing

• Peter Robaschik,
• Ye Ma,
• Salahud Din and
• Sandrine Heutz

Beilstein J. Nanotechnol. 2017, 8, 1469–1475, doi:10.3762/bjnano.8.146

• this case (|D|/J > 1) long-range ordering is not possible [33], which leads to the assumption that β-MnPc can be treated as a single-chain magnet. From the temperature-dependent magnetisation values collected at two different fields the inverse differential susceptibility was determined and is shown in

Low uptake of silica nanoparticles in Caco-2 intestinal epithelial barriers

• Dong Ye,
• Mattia Bramini,
• Delyan R. Hristov,
• Sha Wan,
• Anna Salvati,
• Christoffer Åberg and
• Kenneth A. Dawson

Beilstein J. Nanotechnol. 2017, 8, 1396–1406, doi:10.3762/bjnano.8.141

• ][33] and poly(lactic-co-glycolic acid) and poly(lactic acid) with attached poly(ethylene glycol) [31][32] nanoparticles and to be temperature-dependent [29][30][31][32][33]. Despite uptake, transport across differentiated Caco-2 barriers (grown for 21 days) has been shown to be very limited for

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

• HS(C6H4)2CO2− (8)), and their ability to adsorb on gold surfaces is reported. Besides elemental analysis, IR spectroscopy, electrospray ionization mass spectrometry (ESIMS), UV–vis spectroscopy, and X-ray crystallography (for 6 and 7), the compounds were also studied by temperature-dependent magnetic

• susceptibility measurements (for 7 and 8) and (broken symmetry) density functional theory (DFT) calculations. An S = 2 ground state is demonstrated by temperature-dependent susceptibility and magnetization measurements, achieved by ferromagnetic coupling between the spins of the Ni(II) ions in 7 (J = +22.3 cm−1

• parameters and g-values (isotropic average) [53]. It is well-known that temperature-dependent magnetic susceptibility measurements do not allow a concise determination of the magnitude and sign of D [54]. As a consequence, the data for 7 and 8 were analyzed with the approximation in Equation 2 [55]. The D

Comprehensive Raman study of epitaxial silicene-related phases on Ag(111)

• Dmytro Solonenko,
• Ovidiu D. Gordan,
• Guy Le Lay,
• Dietrich R. T. Zahn and
• Patrick Vogt

Beilstein J. Nanotechnol. 2017, 8, 1357–1365, doi:10.3762/bjnano.8.137

• -energy shoulder. The formation of such crystallites is clearly temperature-dependent. Solely 3D growth is observed when the temperature reaches 300 °C, i.e., the limit of the 2D Si-layer growth mode on Ag(111). The Raman and AFM results confirm the co-existence of Si crystallites and of the “” structure