Measurements of dichroic bow-tie antenna arrays with integrated cold-electron bolometers using YBCO oscillators

• Leonid S. Revin,
• Dmitry A. Pimanov,
• Alexander V. Chiginev,
• Anton V. Blagodatkin,
• Viktor O. Zbrozhek,
• Andrey V. Samartsev,
• Anastasia N. Orlova,
• Dmitry V. Masterov,
• Alexey E. Parafin,
• Victoria Yu. Safonova,
• Anna V. Gordeeva,
• Andrey L. Pankratov,
• Leonid S. Kuzmin,
• Anatolie S. Sidorenko,
• Silvia Masi and
• Paolo de Bernardis

Beilstein J. Nanotechnol. 2024, 15, 26–36, doi:10.3762/bjnano.15.3

• measured in the current bias mode with a readout scheme based on AD745 low-noise JFET operational amplifiers working at room temperature of 300 K. The estimated NEP for this measurement setup is about 5 × 10−16 W/√Hz with further improvement down to 1 × 10−16 W/√Hz in the voltage bias mode [24]. Discussion

TEM sample preparation of lithographically patterned permalloy nanostructures on silicon nitride membranes

• Joshua Williams,
• Michael I. Faley,
• Joseph Vimal Vas,
• Peng-Han Lu and
• Rafal E. Dunin-Borkowski

Beilstein J. Nanotechnol. 2024, 15, 1–12, doi:10.3762/bjnano.15.1

• magnetron sputtering through the resist aperture. We used DC magnetron sputtering in a pure Ar environment at a pressure of 1 Pa to deposit Py at room temperature. The effective permalloy target had a diameter of 8 mm. The sputtered material almost forms a parallel beam when it approaches the substrate at a

unDrift: A versatile software for fast offline SPM image drift correction

• Tobias Dickbreder,
• Franziska Sabath,
• Lukas Höltkemeier,
• Ralf Bechstein and
• Angelika Kühnle

Beilstein J. Nanotechnol. 2023, 14, 1225–1237, doi:10.3762/bjnano.14.101

• ]. Hence, many processes relevant at room temperature or elevated temperatures are impossible to study in a cryogenic environment. The same applies to SPM studies at the solid–liquid interface. For these measurements, the effect of thermal drift needs to be compensated. A variety of different strategies

Fluorescent bioinspired albumin/polydopamine nanoparticles and their interactions with Escherichia coli cells

• Eloïse Equy,
• Jordana Hirtzel,
• Sophie Hellé,
• Béatrice Heurtault,
• Eric Mathieu,
• Morgane Rabineau,
• Vincent Ball and
• Lydie Ploux

Beilstein J. Nanotechnol. 2023, 14, 1208–1224, doi:10.3762/bjnano.14.100

• . Compared to the quantum yields of FITC, RhBITC, and DAPI bound to DNA, which are in the range of 40–90% at room temperature [31][32][34], Ox-BSA/PDA NPs reveal low emission efficiency. However, even if the quantum yield of Ox-BSA/PDA NPs is low, it is significantly higher than the quantum yield of non

• am Harz, Germany) for 48 h to provide lyophilized foam, which was stored at room temperature and protected from light before use. Fluorescent BSA/polydopamine nanoparticles Fluorescent BSA/PDA nanoparticles with a BSA/DA ratio of 10 were synthesized by using two different ways: (i) by oxidation of

• 2 mL of H2O2 solution (30 wt %) were stirred at room temperature in the dark for 24 h. Residual H2O2 was removed from the reaction medium by dialyzing about 8 mL of the suspension against 1 L Milli-Q® water using a Spectra/Por® dialysis membrane with a molecular weight cut-off at 8–10 kDa. The

Determination of the radii of coated and uncoated silicon AFM sharp tips using a height calibration standard grating and a nonlinear regression function

• Perawat Boonpuek and
• Jonathan R. Felts

Beilstein J. Nanotechnol. 2023, 14, 1200–1207, doi:10.3762/bjnano.14.99

• calibration grating Linewidth scanning in contact mode using each of the selected tips with an applied constant normal load of 0.01 nN perpendicular to the calibration grating was carried out at room temperature and 40% humidity. The scanning frequency of the tips was 0.03 Hz. The tips were moved from right

A combined gas-phase dissociative ionization, dissociative electron attachment and deposition study on the potential FEBID precursor [Au(CH₃)₂Cl]₂

• Elif Bilgilisoy,
• Ali Kamali,
• Thomas Xaver Gentner,
• Gerd Ballmann,
• Sjoerd Harder,
• Hans-Peter Steinrück,
• Hubertus Marbach and
• Oddur Ingólfsson

Beilstein J. Nanotechnol. 2023, 14, 1178–1199, doi:10.3762/bjnano.14.98

Hierarchically patterned polyurethane microgrooves featuring nanopillars or nanoholes for neurite elongation and alignment

• Lester Uy Vinzons,
• Guo-Chung Dong and
• Shu-Ping Lin

Beilstein J. Nanotechnol. 2023, 14, 1157–1168, doi:10.3762/bjnano.14.96

• , 150 °C for 15 min, 170 °C for 1 h, and 195 °C for 1 h. Afterwards, the sample was allowed to cool down to room temperature (RT), and then the PDMS was peeled off (Figure 1A(iv)). To form the “reinforced” SU-8 nanohole mold, a nanohole template was first formed on the positive photoresist AZ1518, which

Elasticity, an often-overseen parameter in the development of nanoscale drug delivery systems

• Agnes-Valencia Weiss and
• Marc Schneider

Beilstein J. Nanotechnol. 2023, 14, 1149–1156, doi:10.3762/bjnano.14.95

• elasticity of nanomaterials. Even though the exact temperature of the particles is not known, it is assumed to be equal to the surrounding temperature after a sufficient equilibration time. Many studies are performed at room temperature or at 25 °C instead of at the temperature in which biologic studies are

Curcumin-loaded albumin submicron particles with potential as a cancer therapy: an in vitro study

• Nittiya Suwannasom,
• Netsai Sriaksorn,
• Chutamas Thepmalee,
• Krissana Khoothiam,
• Ausanai Prapan,
• Hans Bäumler and
• Chonthida Thephinlap

Beilstein J. Nanotechnol. 2023, 14, 1127–1140, doi:10.3762/bjnano.14.93

• solution produced by reverse engineering, and make quality control more challenging [19]. Additionally, the degummed silk tends to aggregate when stored for long periods in an aqueous solution, typically for weeks at room temperature and for months at 4 °C [20]. Amongst various carriers, albumin seems to

• mixed with 20 mL of 0.25 M Na2CO3 under constant vigorous stirring for 30 s at room temperature (RT). HSA solution (0.1%) was subsequently added to the mixture under stirring for 5 min to avoid particle aggregation. The obtained particle suspension was separated by centrifugation (6,000g for 3 min

Dual-heterodyne Kelvin probe force microscopy

• Benjamin Grévin,
• Fatima Husainy,
• Dmitry Aldakov and
• Cyril Aumaître

Beilstein J. Nanotechnol. 2023, 14, 1068–1084, doi:10.3762/bjnano.14.88

• ) illumination. An SPV image can eventually be recalculated as the difference between both sets of data [1]. The inherent drawback of this dual-pass method is that the source images used for the SPV calculation may feature misalignments, which is especially unavoidable at room temperature (RT) due to thermal

• kHz (demodulation at the second eigenmode) for its heterodyne counterpart. Dual-Heterodyne Kelvin Probe Force Microscopy: Implementation Non-contact AFM (nc-AFM) and KPFM experiments are performed with a VT-beam AFM system (Scienta-Omicron) at room temperature (RT) under ultra-high vacuum (UHV

Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor

• Kayhan Dağıdır and
• Kemal Bilen

Beilstein J. Nanotechnol. 2023, 14, 1041–1058, doi:10.3762/bjnano.14.86

• XRD and compared with previous studies [23][24] in the literature. The XRD patterns of the Al2O3 nanoparticle samples were recorded in the range 2θ (15°–75°) at room temperature. The XRD pattern of γ-Al2O3 is shown in Figure 3. The diffraction pattern of γ-Al2O3 shows strong peaks at angle (2θ) of

Recognition mechanisms of hemoglobin particles by monocytes – CD163 may just be one

• Jonathan-Gabriel Nimz,
• Pichayut Rerkshanandana,
• Chiraphat Kloypan,
• Ulrich Kalus,
• Saranya Chaiwaree,
• Axel Pruß,
• Radostina Georgieva,
• Yu Xiong and
• Hans Bäumler

Beilstein J. Nanotechnol. 2023, 14, 1028–1040, doi:10.3762/bjnano.14.85

• h at room temperature under stirring. After another washing in aqua dest. the MnCO3 matrix was dissolved using 0.25 M EDTA. After 30 min incubation time, 0.2 mg/mL NaBH4 in 0.1 M NaOH was added to prevent oxidation of Hb to met-Hb. Incubation for another 30 min followed. After triplicate washing in

• NaOH) was added to the particle sample (final concentration: 12.5 mg/mL), mixed, and incubated at room temperature for 15 min while stirring. After centrifugation (20,000g; 10 min) the supernatant was taken off and, immediately, the absorbance at a wavelength of 574 nm was determined photometrically in

• , and CD204, or all of them, were blocked by specific antibodies (CD14-block+HbMP-prefed-30′, CD33-block+HbMP-prefed-30′, CD163-block+HbMP-prefed-30′, CD204-block+HbMP-prefed-30′, and CD14-33-163-204-block+HbMP-prefed-30′). After an incubation period of 30 min protected from light and at room

A visible-light photodetector based on heterojunctions between CuO nanoparticles and ZnO nanorods

• Doan Nhat Giang,
• Nhat Minh Nguyen,
• Duc Anh Ngo,
• Thanh Trang Tran,
• Le Thai Duy,
• Cong Khanh Tran,
• Thi Thanh Van Tran,
• Phan Phuong Ha La and
• Vinh Quang Dang

Beilstein J. Nanotechnol. 2023, 14, 1018–1027, doi:10.3762/bjnano.14.84

• because of its large exciton binding energy of 60 meV at room temperature [20], excellent chemical and thermal stability, high electron mobility, non-toxicity, low cost, and simple synthesis [21][22]. Various shapes of ZnO nanomaterials can be easily obtained by controlling synthesis conditions (e.g

• sensitivity to other wavelengths including 464 nm (blue), 532 nm (green), and 640 nm (red). Figure 5a shows the room temperature I–V characteristics of the CuO NPs/ZnO NRs photodetector under different wavelengths. The photoresponse to wavelengths longer than 395 nm is in accordance with the UV–vis absorbance

• ) solution in an oven at 95 °C within 3 h (as presented in Supporting Information File 1, Figure S1). CuO NPs were synthesized via a simple and low-cost sol–gel method. At first, a mixture of 1.21 g Cu(NO3)2·5H2O and 0.8 g NaOH was dissolved in 50 mL deionized water under constant stirring at room

Upscaling the urea method synthesis of CoAl layered double hydroxides

• Camilo Jaramillo-Hernández,
• Víctor Oestreicher,
• Martín Mizrahi and
• Gonzalo Abellán

Beilstein J. Nanotechnol. 2023, 14, 927–938, doi:10.3762/bjnano.14.76

• ; and (3) X25M: [CoCl2] = 250 mM, [AlCl3] = 125 mM, and [urea] = 875 mM. All obtained solids were filtered, washed three times with H2O, H2O/EtOH, and finally with EtOH. The samples were dried at room temperature and kept in desiccators until further characterization. Synthesis of α-Co layered hydroxide

• The α-Co layered hydroxide synthesis was carried out at room temperature by using the epoxide route for a period of 48 h under constant stirring with solutions of [CoCl2] = 10 mM and [NaCl] = 100 mM, in the presence of glycidol, [Gly] = 500 mM. Chemical and structural characterization Powder X-ray

• -ray absorption spectroscopy (XAS) measurements were performed at the BL-22 (CLÆSS) beamline of the ALBA synchrotron (Barcelona, Spain), proposal: 2022097096. XANES and EXAFS Co K edge spectra were measured at room temperature in transmission mode. Absorbents of as-synthesized fresh samples were

Green SPIONs as a novel highly selective treatment for leishmaniasis: an in vitro study against Leishmania amazonensis intracellular amastigotes

• Brunno R. F. Verçoza,
• Robson R. Bernardo,
• Luiz Augusto S. de Oliveira and
• Juliany C. F. Rodrigues

Beilstein J. Nanotechnol. 2023, 14, 893–903, doi:10.3762/bjnano.14.73

• behavior at room temperature, and are taken up by macrophages without being toxic for these mammalian cells [9]. The application of SPIONs in treating leishmaniasis has been studied by different groups over the past few years, showing promising and satisfactory results [10][11][12][13]; thus, using SPIONs

N-Heterocyclic carbene-based gold etchants

• Robert B. Chevalier,
• Justin Pantano,
• Matthew K. Kiesewetter and
• Jason R. Dwyer

Beilstein J. Nanotechnol. 2023, 14, 865–871, doi:10.3762/bjnano.14.71

• test solution in 20 mL glass vials. Vials were capped and left at room temperature in a fume hood for the allotted time of the experiment. The tokens were then removed from the test solution and rinsed in the respective organic solvent of the test solution before drying under a stream of 99.998

Ultralow-energy amorphization of contaminated silicon samples investigated by molecular dynamics

• Grégoire R. N. Defoort-Levkov,
• Alan Bahm and
• Patrick Philipp

Beilstein J. Nanotechnol. 2023, 14, 834–849, doi:10.3762/bjnano.14.68

• cooled down until it reaches room temperature again. All simulations are carried out at 300 K to reproduce Ar beam processes at room temperature. Results and Discussion In Figure 1 the status of the sample after 500 impacts (corresponding to a fluence of 2.6 × 1015 atoms/cm2) is represented for each

Nanostructured lipid carriers containing benznidazole: physicochemical, biopharmaceutical and cellular in vitro studies

• Giuliana Muraca,
• María Esperanza Ruiz,
• Rocío C. Gambaro,
• Sebastián Scioli-Montoto,
• María Laura Sbaraglini,
• Gisel Padula,
• José Sebastián Cisneros,
• Cecilia Yamil Chain,
• Vera A. Álvarez,
• Cristián Huck-Iriart,
• Guillermo R. Castro,
• María Belén Piñero,
• Matias Ildebrando Marchetto,
• Catalina Alba Soto,
• Germán A. Islan and
• Alan Talevi

Beilstein J. Nanotechnol. 2023, 14, 804–818, doi:10.3762/bjnano.14.66

• % amplitude using an ultrasonic processor (130 Watts, Cole-Parmer, USA) equipped with a 6 mm titanium tip. After the sonication process, NLC-BNZ were obtained by leaving the hot suspension to cool to room temperature. The remaining volume was then measured. Measurement of the encapsulation efficiency

• 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-based SERS substrates fabricated using a 3D printed microfluidic device

• Phommachith Sonexai,
• Minh Van Nguyen,
• Bui The Huy and
• Yong-Ill Lee

Beilstein J. Nanotechnol. 2023, 14, 793–803, doi:10.3762/bjnano.14.65

• centrifuged at 12,000 rpm for 5 min to separate the Ag NPs solution and remove the oil phase. Finally, the Ag NPs suspension was stored in a dark vial at room temperature for further experiments. Fabrication of porous silicon (PS) substrate A p-type Si(100) wafer with a resistivity of 0.01–0.09 Ω·cm was used

• submerged in concentrated HNO3, rinsed with deionized water, and then dried at room temperature to produce the PS substrates. Fabrication of the SERS substrate The deposition of Ag particles on the substrates is based on the SAM method. Colloidal Ag NPs solutions were generated at the methanol/air interface

• with the analyte solution (30 µL) and air-dried at room temperature. SERS signals were then collected from random locations. Results and Discussion Fabrication of droplet-based microfluidic device using 3D printing SLA 3D printing is an additive manufacturing technology that employs a laser to

Carboxylic acids and light interact to affect nanoceria stability and dissolution in acidic aqueous environments

• Matthew L. Hancock,
• Eric A. Grulke and
• Robert A. Yokel

Beilstein J. Nanotechnol. 2023, 14, 762–780, doi:10.3762/bjnano.14.63

• transmission electron microscopy (TEM) imaging, samples were sonicated for 10 min in a sonication bath. Lacey carbon, 300 mesh, copper grids were dipped into the solution for approximately 5 s and dried overnight at room temperature. TEM was used to obtain images of particles throughout the experiment’s

In situ magnesiothermic reduction synthesis of a Ge@C composite for high-performance lithium-ion batterie anodes

• Ha Tran Huu,
• Ngoc Phi Nguyen,
• Vuong Hoang Ngo,
• Huy Hoang Luc,
• Minh Kha Le,
• Minh Thu Nguyen,
• My Loan Phung Le,
• Hye Rim Kim,
• In Young Kim,
• Sung Jin Kim,
• Van Man Tran and
• Vien Vo

Beilstein J. Nanotechnol. 2023, 14, 751–761, doi:10.3762/bjnano.14.62

• than Si at room temperature) conductivity [14]. However, electrodes based on alloying suffer from deterioration during repeated lithiation/delithiation because of the large variation in volume. Despite the lower volume change ratio compared to Si (370% for Ge and 400% for Si) and the structural

• at 180 °C for 12 h. After cooling to room temperature, the solid was collected and rinsed with DI water to neutral pH. The dried solid was denoted as Ge/C-HT180. Solid-state reaction coupling to synthesize Ge/C-SS750 composite Relevant amounts of Ge and BC-800 at a mass ratio of 2:5 were well ground

A graphene quantum dots–glassy carbon electrode-based electrochemical sensor for monitoring malathion

• Sanju Tanwar,
• Aditi Sharma and
• Dhirendra Mathur

Beilstein J. Nanotechnol. 2023, 14, 701–710, doi:10.3762/bjnano.14.56

• the 40 mL suspension at 200 °C for 5 h in a 50 mL poly(tetrafluoroethylene)-lined autoclave. Washing with DI water was carried out in order to remove the acid from the resulting black suspension once it had been cooled to room temperature. NaOH solution was subsequently used to neutralize the solid

• components were sonicated for 30 min to create a homogeneous mixture that could be utilized for the modification of the bare GCE [29]. The final step was to drop cast 5 µL of the GQDs dispersion on the GCE surface and allow it to dry at room temperature. A GQDs-modified working electrode (GQDs/GCE) was

• room temperature, an AIRIX STR 500 laser Raman spectrometer was used with Ar laser excitation at 532 nm. A Panalytical X-Pert Pro diffractometer with Cu Kα radiation (λ = 1.5418 Å) was used for investigating the structural properties of GQDs. Morphology and size of GQDs were confirmed with data

The microstrain-accompanied structural phase transition from h-MoO₃ to α-MoO₃ investigated by in situ X-ray diffraction

• Zeqian Zhang,
• Honglong Shi,
• Boxiang Zhuang,
• Minting Luo and
• Zhenfei Hu

Beilstein J. Nanotechnol. 2023, 14, 692–700, doi:10.3762/bjnano.14.55

• procedure, 6.2 g of ammonium heptamolybdate was dissolved in 100 mL of deionized water and stirred for 30 min at room temperature. Nitric acid was then added to the solution to reduce the pH to 1. After stirring for another 15 min, the solution was transferred into a 200 mL Teflon-lined autoclave and heated

• in situ X-ray diffraction experiments. The other was well mixed and ground and divided into eight parts that were calcined for 30 min at various temperatures (300–440 °C), and naturally cooled down to room temperature. Structure characterization In situ X-ray diffraction To investigate in situ the

Humidity-dependent electrical performance of CuO nanowire networks studied by electrochemical impedance spectroscopy

• Jelena Kosmaca,
• Juris Katkevics,
• Jana Andzane,
• Raitis Sondors,
• Liga Jasulaneca,
• Raimonds Meija,
• Kiryl Niherysh,
• Yelyzaveta Rublova and
• Donats Erts

Beilstein J. Nanotechnol. 2023, 14, 683–691, doi:10.3762/bjnano.14.54

• % purity) by thermal oxidation [9]. The substrates were heated in air from room temperature to 500 °C for 30 min and maintained at the constant temperature for 210 min inside a GSL-1100X (MTI Corporation) quartz tube furnace. Then the heater was switched off, and the oxidized substrates cooled down

Metal-organic framework-based nanomaterials as opto-electrochemical sensors for the detection of antibiotics and hormones: A review

• Akeem Adeyemi Oladipo,
• Saba Derakhshan Oskouei and
• Mustafa Gazi

Beilstein J. Nanotechnol. 2023, 14, 631–673, doi:10.3762/bjnano.14.52

• luminescence quantum yield at room temperature conditions [87][88]. Although nearly all lanthanide elements display photoluminescent capabilities, only two lanthanoid ions, Eu3+ and Tb3+, have intense visible luminescence in red and green, respectively. These two ions are the ones that are most frequently used