Out-of-plane polarization induces a picosecond photoresponse in rhombohedral stacked bilayer WSe₂

• Guixian Liu,
• Yufan Wang,
• Zhoujuan Xu,
• Zhouxiaosong Zeng,
• Lanyu Huang,
• Cuihuan Ge and
• Xiao Wang

Beilstein J. Nanotechnol. 2024, 15, 1362–1368, doi:10.3762/bjnano.15.109

• contrast, and characterized by photoluminescence (PL) measurements at room temperature (see Supporting Information File 1, Figure S3). The relative angles between crystalline axes of the top and bottom WSe2 layers were determined by polarization-resolved SHG measurements. The zigzag directions of the two

• ) at room temperature. The electrical properties of the devices were characterized using an Agilent B1500 semiconductor analyzer in a Lake Shore vacuum chamber (10−4 Pa). SPCM and TRPC measurement The photocurrent maps were all obtained under zero bias using a custom-built scanning photocurrent

Nanoarchitectonics with cetrimonium bromide on metal nanoparticles for linker-free detection of toxic metal ions and catalytic degradation of 4-nitrophenol

• Akash Kumar and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2024, 15, 1312–1332, doi:10.3762/bjnano.15.106

• , respectively, to remove impurities. The supernatants were discarded and the pellets were dispersed in DD water and stored at room temperature. Tunable aspect ratio of gold nanorods capped with CTAB Gold nanorods of different lengths were synthesized using a two-step protocol as described in previous reports

• -AP) in the presence of NaBH4. All reactions were carried out at room temperature in a 3.5 mL quartz cuvette. The reagent for catalysis was added in a sequence of 2 mL of 4-nitrophenol (0.1 mM), 1 mL of NaBH4 (100 mM), and 50 µL (0.5 ± 0.1 OD and 1.0 ± 0.1 OD) of CTAB-AgNS, CTAB-AuNS, CTAB-AuNR1, and

Interaction of graphene oxide with tannic acid: computational modeling and toxicity mitigation in C. elegans

• Romana Petry,
• James M. de Almeida,
• Francine Côa,
• Felipe Crasto de Lima,
• Diego Stéfani T. Martinez and
• Adalberto Fazzio

Beilstein J. Nanotechnol. 2024, 15, 1297–1311, doi:10.3762/bjnano.15.105

• (370 mL). The mixture is stirred for 20 min, then KMnO4 (22.5 mg) is added gradually over 1 h. The reaction is kept under stirring for 72 h at room temperature, and then it is diluted with 300 mL of deionized water and kept for another hour at 95 °C. The temperature is then reduced to 60 °C, and H2O2

• mg·L−1 TA. Then, to avoid salt interference, the suspension was washed three times with deionized water and dripped on mica substrate. The incubation procedure was repeated for spectroscopy analysis. For Raman and FTIR analysis, the suspensions were dried using the speed-vacuum method at room

• temperature; for XPS, the suspensions were dripped on a silicon substrate. Computational methods MD simulations of interactions between TA and the GO surface were performed in LAMMPS, applying ReaxFF reactive force field [72]. MD simulations were conducted under constant pressure (P) and temperature (T), the

Mn-doped ZnO nanopowders prepared by sol–gel and microwave-assisted sol–gel methods and their photocatalytic properties

• Cristina Maria Vlăduț,
• Crina Anastasescu,
• Silviu Preda,
• Oana Catalina Mocioiu,
• Simona Petrescu,
• Jeanina Pandele-Cusu,
• Dana Culita,
• Veronica Bratan,
• Ioan Balint and
• Maria Zaharescu

Beilstein J. Nanotechnol. 2024, 15, 1283–1296, doi:10.3762/bjnano.15.104

• semiconductor with many versatile and attractive applications in optical, optoelectronic, and photocatalytic fields [35][36][37]. The doping of ZnO with Mn can lead to the development of multifunctional nanostructures, such as room-temperature ferromagnetic materials with potential applications in spintronics

• for 10 min at 60 °C, 200 W power and a frequency of 2.45 GHz. Gelation took place at room temperature. All resulting gels were dried at 100 °C for 24 h and then thermally treated at 350 °C for 1 h with a heating speed of 1 °C/min followed by a treatment at 500 °C for 1 h with a heating speed of 5 °C

• resolution of 0.5 nm, and 10 nm slits in excitation and emission. All measurements were performed for 0.001 g catalyst suspended after ultrasonication in ultrapure water at room temperature (25 °C) and λexc = 270 nm. For ROS identification, ·OH radicals trapping was performed with 10 mM coumarin solution

The role of a tantalum interlayer in enhancing the properties of Fe₃O₄ thin films

• Hai Dang Ngo,
• Vo Doan Thanh Truong,
• Van Qui Le,
• Hoai Phuong Pham and
• Thi Kim Hang Pham

Beilstein J. Nanotechnol. 2024, 15, 1253–1259, doi:10.3762/bjnano.15.101

• NTT Hi-Tech Institute, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh Street, Ward 13, District 4, Ho Chi Minh City 700000, Vietnam 10.3762/bjnano.15.101 Abstract High spin polarization and low resistivity of Fe3O4 at room temperature have been an appealing topic in spintronics with various

• promising applications. High-quality Fe3O4 thin films are a must to achieve the goals. In this report, Fe3O4 films on different substrates (SiO2/Si(100), MgO(100), and MgO/Ta/SiO2/Si(100)) were fabricated at room temperature with radio-frequency (RF) sputtering and annealed at 450 °C for 2 h. The

• K [1], as well as its high spin polarization with only one spin at the Fermi level, even at room temperature [2][3][4][5][6]. Fe3O4 thin films are an issue of interest and have extensive applications in Li-ion batteries, spin Seebeck devices, supercapacitors, spin Hall magnetoresistance, and the

Dual-functionalized architecture enables stable and tumor cell-specific SiO₂NPs in complex biological fluids

• Iris Renata Sousa Ribeiro,
• Raquel Frenedoso da Silva,
• Romênia Ramos Domingues,
• Adriana Franco Paes Leme and
• Mateus Borba Cardoso

Beilstein J. Nanotechnol. 2024, 15, 1238–1252, doi:10.3762/bjnano.15.100

• were made in triplicates at room temperature. The 1H NMR spectra were obtained in Bruker spectrometers operating at frequencies of 500 MHz. The NP dispersions (25 mg) were centrifuged and concentrated to 600 μL of D2O with the standard TMSP. The samples were sonicated before measurements. Chemical

• Fisher Scientific) were modified by adding 20 mg of folate receptor alpha protein (FRα, pro-2162 Recombinant Human Folate Receptor 1, Synapse Biotechnology). Incubation was carried out at room temperature for 40 min, under manual agitation. Subsequently, a magnet was used to capture the beads with the

• adsorbed protein, and the supernatant was discarded. The bead+protein set was then incubated with 50 mM (hydroxymethyl)aminomethane buffer (Tris, pH 7.4) + 0.03% bovine serum albumin (BSA) + 0.1% Triton X for 60 min at room temperature and under manual agitation. Then, the supernatant was removed, and the

Enhanced catalytic reduction through in situ synthesized gold nanoparticles embedded in glucosamine/alginate nanocomposites

• Chi-Hien Dang,
• Le-Kim-Thuy Nguyen,
• Minh-Trong Tran,
• Van-Dung Le,
• Nguyen Minh Ty,
• T. Ngoc Han Pham,
• Hieu Vu-Quang,
• Tran Thi Kim Chi,
• Tran Thi Huong Giang,
• Nguyen Thi Thanh Tu and
• Thanh-Danh Nguyen

Beilstein J. Nanotechnol. 2024, 15, 1227–1237, doi:10.3762/bjnano.15.99

• tracked over time using a UV–vis spectrophotometer, covering the wavelength range of 200–600 nm at room temperature without delay. We examined the kinetics of catalytic degradation by monitoring changes in absorbance values at specific wavelengths. Given the small quantity of nanocatalyst and the

A low-kiloelectronvolt focused ion beam strategy for processing low-thermal-conductance materials with nanoampere currents

• Annalena Wolff,
• Nico Klingner,
• William Thompson,
• Yinghong Zhou,
• Jinying Lin and
• Yin Xiao

Beilstein J. Nanotechnol. 2024, 15, 1197–1207, doi:10.3762/bjnano.15.97

• spot has been moved one DAC step further. For a system with 1 nm placement accuracy, the sample, if not cooled to room temperature before those 160 ps have elapsed, will be heated continuously at this location. As long as minimal dwell times cannot be shortened below 1 ns, there will be heat

• model. Thermally low conductive materials can be processed at room temperature with nanoampere currents in the FIB when the ion energy is lowered. Cryo FIB preparation has become a key enabling technology in recent years and reports on successful cryo FIB preparation of biological specimens at higher

• collagen cube for the 5 keV incident gallium ion case study was chosen, which is based on the ions’ projected range in the collagen material and on a volume representative of the lamella that might ultimately be fabricated in a FIB. The geometry was constrained to room temperature on all sides except at

Quantum-to-classical modeling of monolayer Ge₂Se₂ and its application in photovoltaic devices

• Anup Shrivastava,
• Shivani Saini,
• Dolly Kumari,
• Sanjai Singh and
• Jost Adam

Beilstein J. Nanotechnol. 2024, 15, 1153–1169, doi:10.3762/bjnano.15.94

• coefficient and a high dielectric constant inspired the design of a monolayer Ge2Se2-based solar cell, exhibiting a high open circuit voltage of Voc = 1.11 V, a fill factor of 87.66%, and more than 28% power conversion efficiency at room temperature. Our findings advocate monolayer Ge2Se2 for various

• -imaginary frequencies in the phonon spectra confirm the stable geometry of the investigated structure. The electronic properties of the monolayer have been investigated in detail in terms of energy band diagram, effective masses of the charge carriers, mobility of electrons and holes at room temperature

Photocatalytic methane oxidation over a TiO₂/SiNWs p–n junction catalyst at room temperature

• Qui Thanh Hoai Ta,
• Luan Minh Nguyen,
• Ngoc Hoi Nguyen,
• Phan Khanh Thinh Nguyen and
• Dai Hai Nguyen

Beilstein J. Nanotechnol. 2024, 15, 1132–1141, doi:10.3762/bjnano.15.92

• structure of the catalyst provides a surface that can massively increase light absorption, achieving an efficient C2H6 yield of 210 µmol/cm2 in 6 h with high selectivity under light illumination at room temperature. This research could offer new insights into composite photocatalysts for methane coupling

• carried out at 300 °C using TiCl4 (98% purity, 0.2 s pulse time) and H2O (0.1 s pulse time) as precursors. The vacuum level of the chamber was kept at 8 × 10−3 bar, and the deposition rate was 0.051 nm/cycle. After cooling down to room temperature, the sample was taken out from chamber for photocatalytic

• gaseous reactants in batch reactor was established at 5 bar, and the photocatalytic system was kept in the dark (20 min) to reach equilibrium before exposure to simulated solar light. The temperature was kept at room temperature via a cooler. Characterization The crystalline structure and morphological

Unveiling the potential of alginate-based nanomaterials in sensing technology and smart delivery applications

• Shakhzodjon Uzokboev,
• Khojimukhammad Akhmadbekov,
• Ra’no Nuritdinova,
• Salah M. Tawfik and
• Yong-Ill Lee

Beilstein J. Nanotechnol. 2024, 15, 1077–1104, doi:10.3762/bjnano.15.88

Effect of wavelength and liquid on formation of Ag, Au, Ag/Au nanoparticles via picosecond laser ablation and SERS-based detection of DMMP

• Sree Satya Bharati Moram,
• Chandu Byram and
• Venugopal Rao Soma

Beilstein J. Nanotechnol. 2024, 15, 1054–1069, doi:10.3762/bjnano.15.86

• . Subsequently, metal and alloy NPs synthesized via laser ablation (encompassing 18 distinct samples) were applied to the FP through a straightforward drop-casting method and then allowed to dry at room temperature. Following this, the analyte of interest was also applied onto the substrate using drop casting

Bolometric IR photoresponse based on a 3D micro-nano integrated CNT architecture

• Yasameen Al-Mafrachi,
• Sandeep Yadav,
• Sascha Preu,
• Jörg J. Schneider and
• Oktay Yilmazoglu

Beilstein J. Nanotechnol. 2024, 15, 1030–1040, doi:10.3762/bjnano.15.84

• numerous advantages at room temperature operation. New thermally isolated micro-nano architectures equipped with integrated temperature sensors should outperform their predecessors regarding various critical aspects, such as ultra-broadband detection from ultraviolet (UV) to terahertz radiation [1

• , respectively. The room-temperature resistances R01 (sample 1) and R02 (sample 2) at a bias voltage Vbias = 1.5 V were 53.1 and 14.8 kΩ, respectively. The linear temperature dependence is given by the following equation [18][19]: where R(T) is the resistance at temperature T, R0 is the resistance at room

• of microbolometer performance metrics. All values were obtained at room temperature (if not marked otherwise). Supporting Information Supporting Information File 42: Additional experimental data.

Atomistic insights into the morphological dynamics of gold and platinum nanoparticles: MD simulations in vacuum and aqueous media

• Evangelos Voyiatzis,
• Eugenia Valsami-Jones and
• Antreas Afantitis

Beilstein J. Nanotechnol. 2024, 15, 995–1009, doi:10.3762/bjnano.15.81

• ] nanostructures. We also simulated Au and Pt NPs in aqueous solutions at 300 K, that is, close to room temperature. The interactions among the water molecules are described by the SPC/E model [66]. The interactions among the water molecules and the Au (Pt) atoms are calculated by the force field of Merabia et al

Beyond biomimicry – next generation applications of bioinspired adhesives from microfluidics to composites

• Dan Sameoto

Beilstein J. Nanotechnol. 2024, 15, 965–976, doi:10.3762/bjnano.15.79

• non-planar surfaces, bonded to microelectromechanical systems (MEMS), and their use in droplet generation with oil and water. Laplace barriers within geckofluidic channels have directed room-temperature liquid metals (eutectic gallium–indium) with extremely high surface tension to properly fill

Therapeutic effect of F127-folate@PLGA/CHL/IR780 nanoparticles on folate receptor-expressing cancer cells

• Thi Ngoc Han Pham,
• Phuong-Thao Dang-Luong,
• Hong-Phuc Nguyen,
• Loc Le-Tuan,
• Xuan Thang Cao,
• Thanh-Danh Nguyen,
• Vy Tran Anh and
• Hieu Vu_Quang

Beilstein J. Nanotechnol. 2024, 15, 954–964, doi:10.3762/bjnano.15.78

• -carbonyldiimidazole (CDI) (0.44 mmol) in 6 mL of dry dimethyl sulfoxide (DMSO) in a dark environment for 24 h. The mixture was agitated for another 24 h at room temperature after the addition of F127 (0.1 mmol). The reaction was then diluted with 50% distilled water and dialyzed (MWCO 3500 Dal) against deionized

Facile synthesis of Fe-based metal–organic frameworks from Fe₂O₃ nanoparticles and their application for CO₂/N₂ separation

• Van Nhieu Le,
• Hoai Duc Tran,
• Minh Tien Nguyen,
• Hai Bang Truong,
• Toan Minh Pham and
• Jinsoo Kim

Beilstein J. Nanotechnol. 2024, 15, 897–908, doi:10.3762/bjnano.15.74

• ]. Typically, 0.9 g Fe2O3 and different amounts of H3BTC, alongside 45 mL of DI water, were introduced into a Teflon beaker and gently stirred for 15 min at room temperature. The mixture was then carefully sealed inside an autoclave made of stainless steel before being placed inside an electrically heated oven

• Information File 1. Characterizations The materials’ crystalline structure was identified via room-temperature powder X-ray diffraction (PXRD) patterns from a MiniFlex600 system (Rigaku, Japan). The scan covered a 2θ range of 3–40° at a speed of 6°·min−1. Information regarding the morphologies of Fe2O3 and M

Water-assisted purification during electron beam-induced deposition of platinum and gold

• Cristiano Glessi,
• Fabian A. Polman and
• Cornelis W. Hagen

Beilstein J. Nanotechnol. 2024, 15, 884–896, doi:10.3762/bjnano.15.73

• platinum deposits [50][51]. The reservoir of the Au precursor was kept at room temperature (24 °C), and deposits were made while varying the water reservoir temperature from 24 to 35 °C, to increase the water flux. The increase of the chamber pressure is used as a measure for the increasing water flux. At

• nozzle of the water GIS 150 µm above the substrate and 100 µm from the beam position, while the Pt GIS nozzle was at a much larger distance from the deposition area, that is, 0.54 mm above the substrate and 1.29 mm away from the beam position (Figure 3). Furthermore, the Pt precursor was kept at room

• temperature (24 °C) to minimize the precursor flux. Because of the low vapour pressure of the Pt precursor at 24 °C and the remote position of the Pt GIS nozzle, the deposition of platinum is limited by adsorption and surface diffusion of the precursor molecules [51]. A high water flux was necessary for the

Synthesis of silver–palladium Janus nanoparticles using co-sputtering of independent sources: experimental and theorical study

• Maria J. Martínez-Carreón,
• Francisco Solís-Pomar,
• Abel Fundora,
• Claudio D. Gutiérrez-Lazos,
• Sergio Mejía-Rosales,
• Hector N. Fernández-Escamilla,
• Jonathan Guerrero-Sánchez,
• Manuel F. Meléndrez and
• Eduardo Pérez-Tijerina

Beilstein J. Nanotechnol. 2024, 15, 808–816, doi:10.3762/bjnano.15.67

• , an original synthesis equipment built by Mantis Ltd. was modified by the inclusion of an additional magnetron in a second chamber, which allowed us to use two monometallic targets to sputter the two metals independently. With this arrangement, we could find appropriate settings at room temperature to

• designed and built by Mantis Ltd., was modified by adding a second magnetron in a different chamber, in contrast to using a bimetallic target, as Pérez-Tijerina and coworkers did [12]. Unlike other synthesis methods, the IGC technique enabled the BNP synthesis at room temperature. Theoretical studies were

• copper grids in an argon flow at 52 sscm for 5 min at room temperature. The size of the BNPs can be modified by varying three parameters, namely, aggregation area, magnetron power, and partial pressure. The chosen parameters for both magnetrons are presented in Table 1. HRTEM micrographs were obtained

Electron-induced ligand loss from iron tetracarbonyl methyl acrylate

• Hlib Lyshchuk,
• Atul Chaudhary,
• Thomas F. M. Luxford,
• Miloš Ranković,
• Jaroslav Kočišek,
• Juraj Fedor,
• Lisa McElwee-White and
• Pamir Nag

Beilstein J. Nanotechnol. 2024, 15, 797–807, doi:10.3762/bjnano.15.66

• resulting crude solid product was sublimed at room temperature at 700 mTorr to yield the crystalline yellow product. Yield: 140 mg, 40%. Purity of the product was assessed using 1H NMR and IR spectroscopy. IR (hexane) νCO (cm−1): 2100, 2034, 2020, 1997. 1H NMR (400 MHz, CDCl3) δ 3.71 (s, 3H), 3.25 (dd, J

• (TOF) chamber [25][26]. The sample was kept in a glass container at room temperature (around 25 °C); its vapor was introduced into the interaction chamber via a leak valve and exposed to low-energy electrons produced from a simple magnetically collimated electron gun with a heated tungsten filament

Electrospun polysuccinimide scaffolds containing different salts as potential wound dressing material

• Veronika Pálos,
• Krisztina S. Nagy,
• Rita Pázmány,
• Krisztina Juriga-Tóth,
• Bálint Budavári,
• Judit Domokos,
• Dóra Szabó,
• Ákos Zsembery and
• Angela Jedlovszky-Hajdu

Beilstein J. Nanotechnol. 2024, 15, 781–796, doi:10.3762/bjnano.15.65

• changed from room temperature to 180 °C, and the pressure was gradually reduced to 3 mbar. The synthesis lasted 8 h. The DMF was added to the synthesized polymer, stirred at 80 rpm, and left to dissolve for 60 min. The solution was dripped into distilled water, precipitating the PSI as a pellet. The

• powder was dried at 40 °C and stored at room temperature. Based on our previous publications, the molecular weight of the polymer is 28 500 ± 3000 Da [44]. Preparation and characterization of the solutions The preparation of solutions for electrospinning was the following: a 25% (w/w) mixture was made

• (Bluehill 2, USA) were used to examine the mechanical properties of the electrospun scaffolds. The tensile testing was conducted at room temperature. The cut samples were 6 cm long and 1.5 cm wide, and a 1 mm/min pulling speed was applied in each case. The specific load capacity (Equation 1) and the

Exploring surface charge dynamics: implications for AFM height measurements in 2D materials

• Mario Navarro-Rodriguez,
• Andres M. Somoza and
• Elisa Palacios-Lidon

Beilstein J. Nanotechnol. 2024, 15, 767–780, doi:10.3762/bjnano.15.64

• waited for a minimum of 1 h until the humidity stabilized. The experiments were performed at room temperature and low relative humidity (RH < 10%) in a dry nitrogen atmosphere. Topography images were acquired in AM-AFM mode by using the oscillation amplitude as the topography feedback channel. To

Effect of repeating hydrothermal growth processes and rapid thermal annealing on CuO thin film properties

• Monika Ozga,
• Eunika Zielony,
• Aleksandra Wierzbicka,
• Anna Wolska,
• Marcin Klepka,
• Marek Godlewski,
• Bogdan J. Kowalski and
• Bartłomiej S. Witkowski

Beilstein J. Nanotechnol. 2024, 15, 743–754, doi:10.3762/bjnano.15.62

• –Lorentzian functional GL(30) was applied during the simulations. Raman scattering measurements were performed under ambient conditions and room temperature using a T64000 Horiba Jobin-Yvon spectrometer configured in a backscattering geometry with a 1800 gr/mm grating and a microscope objective of 100

Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO₂/graphene quantum dot-modified electrode

• Vu Ngoc Hoang,
• Dang Thi Ngoc Hoa,
• Nguyen Quang Man,
• Le Vu Truong Son,
• Le Van Thanh Son,
• Vo Thang Nguyen,
• Le Thi Hong Phong,
• Ly Hoang Diem,
• Kieu Chan Ly,
• Ho Sy Thang and
• Dinh Quang Khieu

Beilstein J. Nanotechnol. 2024, 15, 719–732, doi:10.3762/bjnano.15.60

• 10 h. The resulting product was then cooled to room temperature and separated by centrifugation at 4000 rpm to obtain a dark brown solid. The concentration of GQDs calculated after subtracting the insoluble part was 0.249% (w/w) (0.125 g of coffee grounds in 50 mL of water). TiO2/GQDs suspensions

• numbers in parentheses stand for the volume ratio of peroxo titanium complex to GQDs solutions. Electrochemical studies Voltammetric measurements were performed at room temperature using a CPA-HH5 electrochemical workstation, Vietnam. A conventional three-electrode cell with a glassy carbon working

Elastic modulus of β-Ga₂O₃ nanowires measured by resonance and three-point bending techniques

• Annamarija Trausa,
• Sven Oras,
• Sergei Vlassov,
• Mikk Antsov,
• Tauno Tiirats,
• Andreas Kyritsakis,
• Boris Polyakov and
• Edgars Butanovs

Beilstein J. Nanotechnol. 2024, 15, 704–712, doi:10.3762/bjnano.15.58

• a carrier gas mixture of Ar/H2 5%, maintaining this temperature and flow for 30 min to allow NW growth. Subsequently, the reactor was naturally cooled to room temperature. Ga2O3 NWs, up to 100 μm in length, grew on SiO2/Si substrates downstream in the low-temperature zone maintained around 850–900