Heat-induced morphological changes in silver nanowires deposited on a patterned silicon substrate

• Elyad Damerchi,
• Sven Oras,
• Edgars Butanovs,
• Allar Liivlaid,
• Mikk Antsov,
• Boris Polyakov,
• Annamarija Trausa,
• Veronika Zadin,
• Andreas Kyritsakis,
• Loïc Vidal,
• Karine Mougin,
• Siim Pikker and
• Sergei Vlassov

Beilstein J. Nanotechnol. 2024, 15, 435–446, doi:10.3762/bjnano.15.39

• HF solution in order to replicate the resist pattern in the oxide layer; 3) silicon etching in tetramethylammonium hydroxide (TMAH) solution at 90 °C to create the etch pits; 4) rinse in HF to remove the remaining SiO2. The resulting substrates had rectangular holes with a side length in the order of

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

• :1 diluted resist and around 203 nm for 1:2 diluted resist. The resist is exposed to 120 µC/cm2 at 100 kV and then post-exposure baked at 110 °C for 2 min. The development is done by submerging the sample in AZ® 726MIF containing 2.38% tetramethylammonium hydroxide (TMAH) for 20 s. Once the resist is

Silicon microgrooves for contact guidance of human aortic endothelial cells

• Sara Fernández-Castillejo,
• Pilar Formentín,
• Úrsula Catalán,
• Josep Pallarès,
• Lluís F. Marsal and
• Rosa Solà

Beilstein J. Nanotechnol. 2017, 8, 675–681, doi:10.3762/bjnano.8.72

• silicon substrates To study the cellular response on surfaces with different geometry, different grooved substrates were produced in silicon wafers using standard photolithography and wet etching techniques [35][36]. The etching time in tetramethylammonium hydroxide (TMAH) was varied in order to generate

Formation and shape-control of hierarchical cobalt nanostructures using quaternary ammonium salts in aqueous media

• Ruchi Deshmukh,
• Anurag Mehra and
• Rochish Thaokar

Beilstein J. Nanotechnol. 2017, 8, 494–505, doi:10.3762/bjnano.8.53

• nanostructures; (v) we identify the importance of crystal twinning and various forces necessary for the formation of anisotropies. This is made possible by a detailed study of a cobalt–tetramethylammonium hydroxide (TMAH) system that forms nanoplates under ambient conditions. The understanding of this system is

• , tetramethylammonium hydroxide (TMAH, 25% (w/w), aqueous), tetraethylammonium hydroxide (TEAH, 35% (w/w), aqueous), and tetrabutylammonium hydroxide (TBAH, 25% (w/w), aqueous) were procured from Sigma-Aldrich Chemicals GmbH. In all the experiments, MilliQ water with a conductivity of σ = 0.0016 S/m was used and the

Effect of tetramethylammonium hydroxide/isopropyl alcohol wet etching on geometry and surface roughness of silicon nanowires fabricated by AFM lithography

• Siti Noorhaniah Yusoh and
• Khatijah Aisha Yaacob

Beilstein J. Nanotechnol. 2016, 7, 1461–1470, doi:10.3762/bjnano.7.138

• important role in the fabrication of semiconductor devices. Wet etching of tetramethylammonium hydroxide (TMAH)/isopropyl alcohol (IPA) on silicon nanowires fabricated by AFM lithography is studied herein. TMAH (25 wt %) with different IPA concentrations (0, 10, 20, and 30 vol %) and etching time durations

• performance for many applications. Keywords: AFM lithography; isopropyl alcohol; silicon nanowires; tetramethylammonium hydroxide; wet etching; Introduction The fabrication of semiconductor devices on silicon-on-insulator (SOI) wafers has recently become popular. Devices necessary for meeting the

• uniformly in the vertical direction only. Anisotropic wet etching is mostly used to fabricate simple microstructures and nanostructures on a single crystal SOI wafer [8]. Tetramethylammonium hydroxide (TMAH) [9][10][11], potassium hydroxide (KOH) [12], sodium hydroxide (NaOH) [13], ethylenediamine

Surfactant-controlled composition and crystal structure of manganese(II) sulfide nanocrystals prepared by solvothermal synthesis

• Elena Capetti,
• Anna M. Ferretti,
• Vladimiro Dal Santo and
• Alessandro Ponti

Beilstein J. Nanotechnol. 2015, 6, 2319–2329, doi:10.3762/bjnano.6.238

• the final NCs since their spectrum is very close to that of a mixture of stearate and amine molecules chemisorbed on the MnS surface. Experimental Materials Manganese(II) chloride (reagent grade, ≥99%), tetramethylammonium hydroxide pentahydrate, sulfur powder (99.98%), dimanganese decacarbonyl (98

• from Calbiochem. All chemicals were used as received without further purification. Synthesis of manganese(II) distearate Manganese distearate (MnSt2) was synthesized by a modification of the procedure reported in [23]. In a three-necked flask, a clear solution of of tetramethylammonium hydroxide

Synthesis, characterization and in vitro biocompatibility study of Au/TMC/Fe₃O₄ nanocomposites as a promising, nontoxic system for biomedical applications

• Hanieh Shirazi,
• Maryam Daneshpour,
• Soheila Kashanian and
• Kobra Omidfar

Beilstein J. Nanotechnol. 2015, 6, 1677–1689, doi:10.3762/bjnano.6.170

• stirring for several minutes, which was the sign of the formation of the magnetic nanoparticles. The nanoparticles were cooled to rt and washed multiple times. For storage, tetramethylammonium hydroxide (TMAH) (0.1 M) was added to the solution [50]. Synthesis of Au nanoparticles D-glucose was used as the

Silica micro/nanospheres for theranostics: from bimodal MRI and fluorescent imaging probes to cancer therapy

• Shanka Walia and
• Amitabha Acharya

Beilstein J. Nanotechnol. 2015, 6, 546–558, doi:10.3762/bjnano.6.57

• , single-electron transistors, lasers and light emitting diodes. The synthesis of magnetic QDs (MQDs) involved the simultaneous addition of CdO, stearic acid and Fe2O3 NPs in trioctylphosphine medium. These MQDs were then capped with silica by using APS (as stabilizer) and tetramethylammonium hydroxide

Comparative evaluation of the impact on endothelial cells induced by different nanoparticle structures and functionalization

• Lisa Landgraf,
• Ines Müller,
• Peter Ernst,
• Miriam Schäfer,
• Christina Rosman,
• Isabel Schick,
• Oskar Köhler,
• Hartmut Oehring,
• Vladimir V. Breus,
• Thomas Basché,
• Carsten Sönnichsen,
• Wolfgang Tremel and
• Ingrid Hilger

Beilstein J. Nanotechnol. 2015, 6, 300–312, doi:10.3762/bjnano.6.28

• calculated amount of a ligand (57 mg CyA, 44 µL MPA, 75 mg DPA) was dissolved in 20 mL of 2-propanol (for CyA and DPA) or 20 mL 1:1 methanol/dioxane mixture (for MPA). The pH was adjusted to 11–12 with tetramethylammonium hydroxide pentahydrate (TMAHP) in case of MPA and DPA, and the mixture was heated up to

Synthesis of radioactively labelled CdSe/CdS/ZnS quantum dots for in vivo experiments

• Gordon M. Stachowski,
• Christoph Bauer,
• Christian Waurisch,
• Denise Bargheer,
• Peter Nielsen,
• Jörg Heeren,
• Stephen G. Hickey and
• Alexander Eychmüller

Beilstein J. Nanotechnol. 2014, 5, 2383–2387, doi:10.3762/bjnano.5.247

• with 4.0 µmol of ZnCl2 (92% of total ZnCl2) diluted in methanol and 41.2 µL of a 65ZnCl2/HCl solution (22.9 µg 65Zn, 0.35 µmol 65Zn, 8% of total ZnCl2, 5 µCi). The HCl and H2O were then evacuated from the flask. A mixture of 30.6 µmol stearic acid and 17.5 µmol tetramethylammonium hydroxide in methanol

Nanoencapsulation of ultra-small superparamagnetic particles of iron oxide into human serum albumin nanoparticles

• Matthias G. Wacker,
• Mahmut Altinok,
• Stephan Urfels and
• Johann Bauer

Beilstein J. Nanotechnol. 2014, 5, 2259–2266, doi:10.3762/bjnano.5.235

• = 6 nm). Additionally, the specific (mass dependant) magnetization of the particles was determined at a temperature of 300 K (Figure 2). Surface modification of magnetite nanoparticles Iron oxide nanoparticles were chemically modified by using a combination of citrate and tetramethylammonium hydroxide

Low cost, p-ZnO/n-Si, rectifying, nano heterojunction diode: Fabrication and electrical characterization

• Vinay Kabra,
• Lubna Aamir and
• M. M. Malik

Beilstein J. Nanotechnol. 2014, 5, 2216–2221, doi:10.3762/bjnano.5.230

• ) was mixed with a 25% aqueous ammonia solution and aluminum chloride as nitrogen and aluminum sources, respectively. These were mixed in the atomic ratio of Zn:N:Al to 1:0.06:0.03 at room temperature under constant stirring. A freshly prepared tetramethylammonium hydroxide (TMAH) solution was added to

Review of nanostructured devices for thermoelectric applications

• Giovanni Pennelli

Beilstein J. Nanotechnol. 2014, 5, 1268–1284, doi:10.3762/bjnano.5.141

• tetramethylammonium hydroxide (TMAH). As for example, the silicon top layer can be etched in KOH 35% in volume at 43°C for 5–7 min: The etching time is not very critical, because the etching stops (it is very low) on the buried oxide layer, and on {111} silicon crystalline planes. At the end of the etching process

Organic and inorganic–organic thin film structures by molecular layer deposition: A review

• Pia Sundberg and
• Maarit Karppinen

Beilstein J. Nanotechnol. 2014, 5, 1104–1136, doi:10.3762/bjnano.5.123

Surface passivation and optical characterization of Al₂O₃/a-SiC_x stacks on c-Si substrates

• Gema López,
• Pablo R. Ortega,
• Cristóbal Voz,
• Isidro Martín,
• Mónica Colina,
• Anna B. Morales,
• Albert Orpella and
• Ramón Alcubilla

Beilstein J. Nanotechnol. 2013, 4, 726–731, doi:10.3762/bjnano.4.82

• on both sides with solution of tetramethylammonium hydroxide (TMAH) in isopropanol (IPA) solution. Before film deposition, four wafers, two n-type (one textured and one polished) and two p-type (one textured and one polished) were cleaned following an RCA sequence and cut to quarters. Al2O3 films