Electrostatic pull-in application in flexible devices: A review

• Teng Cai,
• Yuming Fang,
• Yingli Fang,
• Ruozhou Li,
• Ying Yu and
• Mingyang Huang

Beilstein J. Nanotechnol. 2022, 13, 390–403, doi:10.3762/bjnano.13.32

• was more than 50 times. The combination of flexible valves and PDMS microchannels optimizes the optical transparency and durability of microvalves. A pneumatically coupled graphene membrane pump was designed by Davidovikj et al. [78], which is selectively permeable to gases in a controllable way, as

• shown in Figure 9. The dumbbell-shape chamber consists of a narrow trench connecting two circular cavities, both of which are covered by few-layer graphene. Local electrodes at the bottom of each cavity allow to drive each graphene membrane individually, changing the pressure of the chamber through a

Nanomechanics of few-layer materials: do individual layers slide upon folding?

• Ronaldo J. C. Batista,
• Rafael F. Dias,
• Ana P. M. Barboza,
• Alan B. de Oliveira,
• Taise M. Manhabosco,
• Thiago R. Gomes-Silva,
• Matheus J. S. Matos,
• Andreij C. Gadelha,
• Cassiano Rabelo,
• Luiz G. L. Cançado,
• Ado Jorio,
• Hélio Chacham and
• Bernardo R. A. Neves

Beilstein J. Nanotechnol. 2020, 11, 1801–1808, doi:10.3762/bjnano.11.162

• , we mention the recent development of an electromechanical device based on a water-induced electromechanical response in suspended graphene atop a microfluidic channel. The resistivity of the graphene membrane rapidly decreases by approx. 25% upon water injection into the channel due to the reduction

The inhibition effect of water on the purification of natural gas with nanoporous graphene membranes

• Krzysztof Nieszporek,
• Tomasz Pańczyk and
• Jolanta Nieszporek

Beilstein J. Nanotechnol. 2018, 9, 1906–1916, doi:10.3762/bjnano.9.182

• permeation. In the extreme case, when the nanopore rim contains only nitrogen atoms, water agglomerates at the center of the nanopore and effectively closes down the permeation path. The conclusions are confirmed by the analysis of stability and kinetics of hydrogen bonds. Keywords: graphene membrane

• reasons, the application of nanoporous graphene membrane deserves special attention. The separation through graphene crucially depends on the method of nanopore passivation. There are a lot of papers on graphene membranes doped with hydrogen, nitrogen or oxygen [7][8][9]. Sakaushi and Antonietti wrote an

• simulation model we assumed that the graphene surface is not completely flat and there may be some wrinkles and fluctuations in the graphene membrane. Because this effect can influence gas permeation as well as, we made an effort to investigate it more precisely. For this reason we considered two aspects of

Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system

• Karolline A. S. Araujo,
• Luiz A. Cury,
• Matheus J. S. Matos,
• Thales F. D. Fernandes,
• Luiz G. Cançado and
• Bernardo R. A. Neves

Beilstein J. Nanotechnol. 2018, 9, 963–974, doi:10.3762/bjnano.9.90

• substrate, for example, should enable a true RA/graphene interfacial interaction, free from deleterious influence of the supporting substrate. A free-standing monolayer graphene membrane would also avoid spurious substrate influences, but this kind of sample would bring some obstacles for SPM experiments

Review: Electrostatically actuated nanobeam-based nanoelectromechanical switches – materials solutions and operational conditions

• Liga Jasulaneca,
• Jelena Kosmaca,
• Raimonds Meija,
• Jana Andzane and
• Donats Erts

Beilstein J. Nanotechnol. 2018, 9, 271–300, doi:10.3762/bjnano.9.29

• the drain electrode. Another architecture of graphene-based devices includes circularly clamped graphene switching elements [25]. Such devices can operate in 2T or 3T configuration (Figure 10a) with sub-5 V actuation voltage and provide a “line” contact of graphene membrane during switching. The

Ion beam profiling from the interaction with a freestanding 2D layer

• Ivan Shorubalko,
• Kyoungjun Choi,
• Michael Stiefel and
• Hyung Gyu Park

Beilstein J. Nanotechnol. 2017, 8, 682–687, doi:10.3762/bjnano.8.73

• the graphene membrane will be sputtered only to the direction of the incident ion momentum. When Ga+ ions with 30 keV energy hit the graphene membrane, carbon atoms are sputtered at a probability of about 50% [14]. Ga-FIBs are known to have Gaussian beam profiles to a large extent [4][5][6]. First

• observed limitation is the graphene membrane collapse under high current Ga+-FIBs. Actually, in the inset of Figure 1d one can see that for longer exposure times the density of the pores is deliberately reduced. This is because of mechanical breakdown of the pores under large irradiation currents and doses

• lines averaging was used for pores imaging. The pixel resolution was chosen to be better than 0.5 nm/pixel. (a) STEM-BF image of a graphene membrane perforated with a 1.5 pA Ga-FIB. Pores diameter increases for longer dwell time. Scale bar is 50 nm. (b) Ten pores created under the same conditions, beam

Advances in the fabrication of graphene transistors on flexible substrates

• Gabriele Fisichella,
• Stella Lo Verso,
• Silvestra Di Marco,
• Vincenzo Vinciguerra,
• Emanuela Schilirò,
• Salvatore Di Franco,
• Raffaella Lo Nigro,
• Fabrizio Roccaforte,
• Amaia Zurutuza,
• Alba Centeno,
• Sebastiano Ravesi and
• Filippo Giannazzo

Beilstein J. Nanotechnol. 2017, 8, 467–474, doi:10.3762/bjnano.8.50

• demonstrates that the previously discussed LT process is completely compatible with the final plastic substrate. Graphene transistor channels were fabricated starting from a single layer graphene film grown by CVD on large area copper foils (provided by Graphenea). The graphene membrane was transferred to a

• graphene. In particular, it is expected that the polycrystalline nature of CVD graphene has a direct effect on the current transport in a large area channel. In addition to these natural defects originating from CVD growth, the graphene membrane is subjected to significant strain if transferred to a rough

Micro- and nanoscale electrical characterization of large-area graphene transferred to functional substrates

• Gabriele Fisichella,
• Salvatore Di Franco,
• Patrick Fiorenza,
• Raffaella Lo Nigro,
• Fabrizio Roccaforte,
• Cristina Tudisco,
• Guido G. Condorelli,
• Nicolò Piluso,
• Noemi Spartà,
• Stella Lo Verso,
• Corrado Accardi,
• Cristina Tringali,
• Sebastiano Ravesi and
• Filippo Giannazzo

Beilstein J. Nanotechnol. 2013, 4, 234–242, doi:10.3762/bjnano.4.24

• properties of the graphene membrane. In this paper, we investigated the morphological and electrical properties of CVD graphene transferred onto SiO2 and on a polymeric substrate (poly(ethylene-2,6-naphthalene dicarboxylate), briefly PEN), suitable for microelectronics and flexible electronics applications

• graphene membrane must be transferred to a properly chosen insulating substrate [18]. A commonly used method to transfer graphene grown on copper foil onto the target substrate is the use of a resist film deposited on the graphene surface, which is used as a support during the etching of the underlying Cu

• foil. After the etching process, the graphene membrane attached to the resist scaffold is mechanically attached to the target substrate and the resist is eliminated. There are two crucial points in this transfer technique: (i) promoting the adhesion of graphene onto the target substrate; and (ii