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Search for "heating" in Full Text gives 693 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.
Aero-ZnS prepared by physical vapor transport on three-dimensional networks of sacrificial ZnO microtetrapods
Beilstein J. Nanotechnol. 2024, 15, 490–499, doi:10.3762/bjnano.15.44
- final ZnS aero-semiconductor material is produced in the second chamber by heating the ZnS/ZnO core–shell structures in a H2 atmosphere. Thus, the sacrificial ZnO template is dissolved from the ZnS/ZnO core–shell structures. In contrast, in this paper, all technological procedures occur in a single
Heat-induced morphological changes in silver nanowires deposited on a patterned silicon substrate
Beilstein J. Nanotechnol. 2024, 15, 435–446, doi:10.3762/bjnano.15.39
- NW networks is in highly flexible transparent film heaters [15]. In recent years, Ag NWs have garnered attention as a key element in neuromorphic computing devices [16]. In the context of the applications mentioned, Ag NWs are subjected to elevated temperatures caused by Joule heating [17]. Moreover
- were then heated to different temperatures in air, and the behavior of suspended as opposed to the adhered part under heating was compared. Experiments are supplemented with molecular dynamics (MD) and finite element method (FEM) simulations. Materials and Methods Preparation of samples Silver NWs with
- out in a muffle furnace (NABERTHERM, L-091H1RN-240). Samples were placed into the furnace that was already preheated to the target temperature, then they were removed after 10 min from the hot furnace, and were naturally cooled in air at room temperature. The heating time (10 min) was chosen for
Modulated critical currents of spin-transfer torque-induced resistance changes in NiCu/Cu multilayered nanowires
Beilstein J. Nanotechnol. 2024, 15, 360–366, doi:10.3762/bjnano.15.32
- , Supporting Information File 1). It results from Joule heating due to the high current density rather than from spin-related effects. Therefore, in order to visualize the spin-related features, the reduced differential resistance (dV/dI)red was obtained by subtracting the background curve measured at µ0H
Determining by Raman spectroscopy the average thickness and N-layer-specific surface coverages of MoS2 thin films with domains much smaller than the laser spot size
Beilstein J. Nanotechnol. 2024, 15, 279–296, doi:10.3762/bjnano.15.26
- monotonically, reversibly, and quasi-linearly with Pλ (see inset of Figure 1). For MoS2, we found an increase rate of 25–30 °C/mW for monolayers (1L-MoS2) and 40–45 °C/mW for bilayers (2L-MoS2). Usual effects of sample heating are the frequency shift of the phonon modes and their concomitant broadening. In
Ultrasensitive and ultrastretchable metal crack strain sensor based on helical polydimethylsiloxane
Beilstein J. Nanotechnol. 2024, 15, 270–278, doi:10.3762/bjnano.15.25
- responsiveness in quantifying the extent of flexion. Figure 4a illustrates the relationship between relative resistance change and temperature. A mandrel wrapped by the helical sensor undergoes expansion under external heating, resulting in alterations in helical diameter and resistance output. The findings
Vinorelbine-loaded multifunctional magnetic nanoparticles as anticancer drug delivery systems: synthesis, characterization, and in vitro release study
Beilstein J. Nanotechnol. 2024, 15, 256–269, doi:10.3762/bjnano.15.24
- ]. Many well-designed agents have been developed for photothermal therapy, including carbon, metal, and organic nanocomposites [21]. Due to their superparamagnetic and heating potential, Fe3O4 nanoparticles have recently garnered attention, particularly in photothermal therapy research. Dopamine (DA) is a
- abovementioned paper. It was demonstrated through this study that as the amount of PDA polymer increased, both photothermal heating efficiency and drug release decreased, while the drug release rate increased when photothermal heating was applied. Fe3O4 nanoparticles with adjustable magnetic properties and
- min of laser irradiation. All drug-loaded nanostructures reached a heating temperature of 40 °C after 3 min and did not exceed a maximum temperature of 46 °C. These findings indicate a promising potential for applying these nanostructures in photothermal therapy. Figure 5c presents the results of the
Ion beam processing of DNA origami nanostructures
Beilstein J. Nanotechnol. 2024, 15, 207–214, doi:10.3762/bjnano.15.20
- irradiation of samples, a Faraday cup is inserted and the ratio between the Faraday cup and slit currents is determined and allows for calculating the reached projectile fluence. Fluxes were kept at or below 2 × 109 ions·cm−2·s−1 to prevent macroscopic sample heating. Projectile fluences ranged from 1012 to
- this decrease in height to localized sample heating, which can desorb residual H2O and loosely bound DNA radiolysis products especially in vacuum. We performed macroscopic sample heating experiments (Supporting Information File 1, Figure S1), and we detected an observable height loss starting from 150
- °C. This is consistent with what has been observed in heating experiments on dry DNA origami in Ar atmosphere [38]. At 250 °C, it has been observed that the nanostructures begin to be pyrolyzed [39], plausibly leaving inorganic residues such as Mg and P [38]. It is worth mentioning that neither 250
Graphene removal by water-assisted focused electron-beam-induced etching – unveiling the dose and dwell time impact on the etch profile and topographical changes in SiO2 substrates
Beilstein J. Nanotechnol. 2024, 15, 190–198, doi:10.3762/bjnano.15.18
- confocal Raman Alpha 300 M+ from WITec, which combines a Raman spectrograph with a confocal microscope. A laser with a 532 nm wavelength, spot size of 1 μm, and power fixed at 1 mW was used to avoid sample heating. The confocal microscope gives a higher lateral resolution than conventional optical
Modification of graphene oxide and its effect on properties of natural rubber/graphene oxide nanocomposites
Beilstein J. Nanotechnol. 2024, 15, 168–179, doi:10.3762/bjnano.15.16
- g of NaNO3 and 3 g of KMnO4 were added to the mixture. The temperature was maintained between 0–5 °C, and the system was kept for 2 h before heating up to 35 °C and kept for 1 h. After that, water was added to increase the temperature to 90 °C for 30 min, and 10 mL of H2O2 was dropped into the flask
- after drying the solution in a heating oven. Vinyltriethoxysilane was used to modify GO [25][32] and it was bonded on the GO surface by the sol–gel method, as shown in Figure 1. Firstly, GO (0.4 g) was thoroughly dispersed in distilled water. After that, VTES (1.8 g) was added to the mixture, followed
- gravimetric analysis (TGA) of the samples was performed on a TA Q500 instrument. The temperature was increased at a heating rate of 10 °C /min from room temperature to 900 °C in air atmosphere. The morphology of the DPNR/GO-VTES was observed with field-emission scanning electron microscopy (FE-SEM) performed
Enhanced feedback performance in off-resonance AFM modes through pulse train sampling
Beilstein J. Nanotechnol. 2024, 15, 134–143, doi:10.3762/bjnano.15.13
- to add a second piezo on the Z axis with a higher resonance frequency [23]. Another approach is direct actuation of the cantilever, as it typically possesses a higher resonance frequency [24][25][26]. In particular, photothermal actuation, which utilizes laser-induced heating of the cantilever, has
In situ optical sub-wavelength thickness control of porous anodic aluminum oxide
Beilstein J. Nanotechnol. 2024, 15, 126–133, doi:10.3762/bjnano.15.12
- heating, electrolyte flow [19], arrangement of the electrodes, and crystallographic orientation of the aluminum substrate [20]. In this work, we continuously recorded the reflectance spectra from a PAAO-coated aluminum surface during anodization. In a similar reflective interference spectroscopy (RIfS
Development and characterization of potential larvicidal nanoemulsions against Aedes aegypti
Beilstein J. Nanotechnol. 2024, 15, 104–114, doi:10.3762/bjnano.15.10
- ethanol (50:50 v/v), pH 5.5. 1 mL of the formulations was used, as allowed by the Franz cell. The acceptor solution was constantly agitated at 300 rpm using mini-magnetic agitators. The temperature was maintained at 37 ± 2 °C by utilizing a circulating heating bath in the jacketed cells. The evaluation of
Influence of conductive carbon and MnCo2O4 on morphological and electrical properties of hydrogels for electrochemical energy conversion
Beilstein J. Nanotechnol. 2024, 15, 57–70, doi:10.3762/bjnano.15.6
- composite with significant electrical conductivity resulting from the presence of conductive carbon particles in a process that is much faster and easier to perform. It is also inexpensive as it does not require electricity consumption in long mixing and/or heating processes. The produced hydrogel
Measurements of dichroic bow-tie antenna arrays with integrated cold-electron bolometers using YBCO oscillators
Beilstein J. Nanotechnol. 2024, 15, 26–36, doi:10.3762/bjnano.15.3
- stage is the deposition of about 70 nm of Al at an angle of −45° to form a SIN tunnel junction. Thus, as a normal layer we use the hybrid superconducting/ferromagnetic structure, which allows for decreasing the absorber volume and also for suppressing the Andreev heating current [22] to improve detector
A multi-resistance wide-range calibration sample for conductive probe atomic force microscopy measurements
Beilstein J. Nanotechnol. 2023, 14, 1141–1148, doi:10.3762/bjnano.14.94
- droplets (F42240, lead-free solder paste – class 5, CIF, France). The fused silica substrate was placed on a heating plate set to 270 °C, which required around 3 min to reach the melting temperature of the solder droplets (217 °C), as observed under an optical microscope. Upon cooling, 16 SMD resistors
- avoid excessive Joule heating within the nanocontact. Conclusion We have designed a multi-resistance wide-range reference for calibrating the complete C-AFM measurement circuit over a resistance range from 100 Ω to 100 GΩ. A set of operating protocols have been demonstrated for measuring resistance in C
Nanoarchitectonics of photothermal materials to enhance the sensitivity of lateral flow assays
Beilstein J. Nanotechnol. 2023, 14, 988–1003, doi:10.3762/bjnano.14.82
- , polymers such as polyaniline (PANI), poly(3,4-ethylenedioxythiophene) (PEDOT) and polydopamine (PDA) are used as photothermal agents. After protonation in acidic environments, PANI absorbs photons in the NIR range. PEDOT maintains its photothermal properties even after continuous heating or cooling [24
- addition, the photothermal effect of antibody conjugation on GNCs was studied. The antibody-conjugated GNCs did not show any observable change in temperature difference compared to bare GNCs. The photostability of GNCs on the LFA membrane was studied with five cycles of laser heating (2 min) and cooling
Isolation of cubic Si3P4 in the form of nanocrystals
Beilstein J. Nanotechnol. 2023, 14, 971–979, doi:10.3762/bjnano.14.80
- products of CVD synthesis [39], could provide a faster diffusion channel and play a key role in Si3P4 formation. Moreover, the heating of amorphous silicon is also known to induce an irreversible transition to the crystalline state above 700 °C [40]. Next, a synthesis of pre-annealed SP670 that consisted
- obtained Si3P4 is 5.04 Å. The formation of the considered substance in the form of polycrystalline NPs occurs at 400 °C (further heating causes progressive decomposition). Vibrational spectra of a 3:4 binary compound with defective zinc blende structure were recorded and analyzed for the first time
Upscaling the urea method synthesis of CoAl layered double hydroxides
Beilstein J. Nanotechnol. 2023, 14, 927–938, doi:10.3762/bjnano.14.76
- spectroscopic techniques (ATR-FTIR, UV–vis, XPS, ICP-MS, and XANES-EXAFS). In the case of the volumetric scale-up, a reduction of 45% in the lateral dimensions of the crystals (from 3.7 to 2.0 µm) is observed as the reaction volume increases. This fact is related to modified heating processes affecting the
- process (thermodynamic aspects). In the volumetric approach, pure CoAl-based LDHs are obtained, size and shape (edge sharpness) of which highly depend on the heating procedure, even after 48 h of recrystallization (kinetic aspects). Our results suggest that either an up to tenfold mass scale-up or a 20
- -fold volumetric scale-up can provide pure CoAl-based LDH materials exhibiting comparable morphology and crystallinity. Interestingly, while in the case of the volumetric scale-up, the kinetic issues could be solved by a better control over the heating process, the thermodynamic aspects (phase
Green SPIONs as a novel highly selective treatment for leishmaniasis: an in vitro study against Leishmania amazonensis intracellular amastigotes
Beilstein J. Nanotechnol. 2023, 14, 893–903, doi:10.3762/bjnano.14.73
- because of its intrinsic properties, (2) a treatment agent associated with heating through alternating current magnetic fields, and (3) a drug carrier. Finally, SPIONs can be considered a strong candidate for a new therapeutic approach to treating cutaneous leishmaniasis, that is, an accessible and low
A wearable nanoscale heart sound sensor based on P(VDF-TrFE)/ZnO/GR and its application in cardiac disease detection
Beilstein J. Nanotechnol. 2023, 14, 819–833, doi:10.3762/bjnano.14.67
- length and 3 cm in width is cut, and a layer of conductive silver paste is evenly applied to both sides of the film. The paste is then dried completely by heating on a plate at 55 °C for 2 h. Copper foil tape is used as an electrode to attach to the conductive silver paste layer on both sides, and wires
Nanostructured lipid carriers containing benznidazole: physicochemical, biopharmaceutical and cellular in vitro studies
Beilstein J. Nanotechnol. 2023, 14, 804–818, doi:10.3762/bjnano.14.66
- 5 mg of the dry sample after freeze drying the formulations was used. Scans were run in the range from 0 to 250 °C at a heating rate of 10 °C/min. The degree of crystallinity (% crystallinity index, CI) was calculated using the following equation [55]: where ΔHNLC and ΔHbulk material are the melting
- Instruments, New Castle, DE, USA). Freeze dried formulations of approximately 10 mg were accurately weighed in a platinum pan. Measurements were performed from room temperature to 600 °C at a heating rate of 10 °C/min under nitrogen atmosphere to avoid thermo-oxidative degradation. Attenuated total reflection
Silver nanoparticles loaded on lactose/alginate: in situ synthesis, catalytic degradation, and pH-dependent antibacterial activity
Beilstein J. Nanotechnol. 2023, 14, 781–792, doi:10.3762/bjnano.14.64
- that disrupts the cross-linking between Ca2+ ions and COO− groups of sugar molecules in the alginate chains, leading to the formation of soluble nanoparticles (Figure 1). To obtain the nanocomposite AgNPs@Lac/Alg, Ag+@Lac/Alg was reduced through a heating process, without the use of additional
- blank composite and the nanocomposites in an air flow of 20 mL/min at a heating rate of 10 °C/min. The TGA curve of AgNPs@Lac/Alg closely resembles that of the blank composite. Between 37 and 200 °C, the nanocomposite AgNPs@Lac/Alg-0.3 exhibited a significantly higher thermal loss (28%) compared to the
- were approximately 52 and 48%, respectively, while the blank nanocomposite underwent a weight loss of about 68%. The presence of similar quality of ashes remaining after the heating process confirms the presence of inorganic components in the nanocomposites that are comparable to those in the blank
In situ magnesiothermic reduction synthesis of a Ge@C composite for high-performance lithium-ion batterie anodes
Beilstein J. Nanotechnol. 2023, 14, 751–761, doi:10.3762/bjnano.14.62
- , then placed in a ceramic crucible and heated to 800 °C for 5 h under argon gas flow with a heating rate of 10 °C·min−1. The obtained solid was washed with potassium hydroxide solution (KOH 20%) at 70 °C for 2 h, then leached with 2 M HCl at 70 °C for 15 h and washed several times with de-ionized (DI
Control of morphology and crystallinity of CNTs in flame synthesis with one-dimensional reaction zone
Beilstein J. Nanotechnol. 2023, 14, 741–750, doi:10.3762/bjnano.14.61
- graphene sheets on the surface [18][19]. In flame synthesis, the rapid heating rate causes catalytic activation and nucleation to occur almost instantaneously by the arrangement of carbon atoms on the surface of catalyst nanoparticles, leading to cap formation and liftoff. Figure 2b and Figure 2d show
A graphene quantum dots–glassy carbon electrode-based electrochemical sensor for monitoring malathion
Beilstein J. Nanotechnol. 2023, 14, 701–710, doi:10.3762/bjnano.14.56
- modifications. Glucose (2 g) was dissolved in 20 mL DI water and filtered for the removal of undissolved particles through Whatman filter paper. In the above solution, 20 mL of conc. H2SO4 was added dropwise until it turned brownish under constant stirring. The hydrothermal treatment was conducted by heating
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