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Search for "DFT calculations" in Full Text gives 159 result(s) in Beilstein Journal of Nanotechnology.

A review of metal-organic frameworks and polymers in mixed matrix membranes for CO2 capture

  • Charlotte Skjold Qvist Christensen,
  • Nicholas Hansen,
  • Mahboubeh Motadayen,
  • Nina Lock,
  • Martin Lahn Henriksen and
  • Jonathan Quinson

Beilstein J. Nanotechnol. 2025, 16, 155–186, doi:10.3762/bjnano.16.14

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  • functional theory (DFT) calculations and supported by neutron powder diffraction experiments and infrared spectroscopy [52][63][64][65]. It is agreed in literature that CO2 molecules bind to Mg2+ sites with end-on coordination, forming an angular Mg2+·OCO complex, with the rotation angle θ depending on the
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Published 12 Feb 2025

Advanced atomic force microscopy techniques V

  • Philipp Rahe,
  • Ilko Bald,
  • Nadine Hauptmann,
  • Regina Hoffmann-Vogel,
  • Harry Mönig and
  • Michael Reichling

Beilstein J. Nanotechnol. 2025, 16, 54–56, doi:10.3762/bjnano.16.6

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  • carry out a more detailed characterization of the optoelectronic properties. Rothhardt et al. map the local work function on graphene nanoribbons [7]. They experimentally investigate the charge transfer between a gold substrate and graphene nanoribbons and compare that to DFT calculations. Indeed, the
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Editorial
Published 21 Jan 2025

Theoretical study of the electronic and optical properties of a composite formed by the zeolite NaA and a magnetite cluster

  • Joel Antúnez-García,
  • Roberto Núñez-González,
  • Vitalii Petranovskii,
  • H’Linh Hmok,
  • Armando Reyes-Serrato,
  • Fabian N. Murrieta-Rico,
  • Mufei Xiao and
  • Jonathan Zamora

Beilstein J. Nanotechnol. 2025, 16, 44–53, doi:10.3762/bjnano.16.5

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  • using DFT calculations. The results obtained indicate that the electronic and optical properties of the composite are enhanced because of the cluster. However, the properties exhibited by the cluster outside the zeolite differ from those it presents when it is part of the composite. It is noteworthy
  • cluster using DFT calculations and compares them to those in the case where the cluster is embedded within the NaA zeolite. Our work aims to provide insights into the structural and electronic properties of these systems, paving the way for future experimental investigations and the development of novel
  • characteristics for specific applications within the visible spectrum. Conclusion In this work, the influence of the inclusion of a magnetite cluster into NaA zeolite is studied through DFT calculations. The findings reveal that the cluster not only introduces states into the forbidden energy gap of the zeolite
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Published 17 Jan 2025

Facile synthesis of size-tunable L-carnosine-capped silver nanoparticles and their role in metal ion sensing and catalytic degradation of p-nitrophenol

  • Akash Kumar,
  • Ridhima Chadha,
  • Abhishek Das,
  • Nandita Maiti and
  • Rayavarapu Raja Gopal

Beilstein J. Nanotechnol. 2024, 15, 1576–1592, doi:10.3762/bjnano.15.124

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  • -carnosine and ʟ-car-AgNPs and 100 s for ʟ-carnosine in aqueous solution. DFT calculations Theoretical insights into the FTIR and Raman measurements were obtained through molecular structure optimization of ʟ-carnosine, its anionic form, and probable ʟ-carnosine–(Ag)4 complexes. The structure optimization
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Published 06 Dec 2024

Integrating high-performance computing, machine learning, data management workflows, and infrastructures for multiscale simulations and nanomaterials technologies

  • Fabio Le Piane,
  • Mario Vozza,
  • Matteo Baldoni and
  • Francesco Mercuri

Beilstein J. Nanotechnol. 2024, 15, 1498–1521, doi:10.3762/bjnano.15.119

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Published 27 Nov 2024

Strain-induced bandgap engineering in 2D ψ-graphene materials: a first-principles study

  • Kamal Kumar,
  • Nora H. de Leeuw,
  • Jost Adam and
  • Abhishek Kumar Mishra

Beilstein J. Nanotechnol. 2024, 15, 1440–1452, doi:10.3762/bjnano.15.116

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  • functional theory (DFT) calculations to investigate the modification of the electronic properties of graphene through strain engineering [33]. They found that isotropic and biaxial strains cannot open graphene’s bandgap [33]. In contrast, the presence of biaxial strain and compression along zig-zag (11%) and
  • an anode material in Li-ion batteries [16]. Theoretical investigations also suggest that when ψ-graphene is decorated with transition metals like zirconium, yttrium, and titanium, it can serve as an excellent adsorbent for hydrogen storage [42][44][45]. DFT calculations have shown that the adsorption
  • detailed density functional theory calculations with dispersion correction and on-site Coulomb interaction (DFT(D) + U) to investigate CO2 activation on ψ-graphene and its hydrogenated forms for their application in the electrochemical conversion of CO2 [43]. Faghihnasiri et al. have performed DFT
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Published 20 Nov 2024

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

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  • indicates that TA mostly forms a single layer of stronger interacting molecules close to the surface. DFT calculations allowed us to evaluate the electronic and reactivity properties of the system TA and GO. Fukui functions are a concept used to study the local reactivity of molecules/materials. They
  • ., positive values up to +2 eV) obtained from DFT calculations when dispersion corrections are not applied. The adsorption energy value is determined by the number and types of interactions involved, such as hydrogen bonds, as well as carbon–carbon and carbon–hydrogen interactions. Supporting Information File
  • into equally spaced snapshots, and the average binding energies and standard error of the mean between TA and GO structures were calculated from DFT calculations. Figure 5 shows that the interaction between TA and GO increases with the oxidation level of the GO surface, which can be explained by the
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Published 30 Oct 2024

AI-assisted models to predict chemotherapy drugs modified with C60 fullerene derivatives

  • Jonathan-Siu-Loong Robles-Hernández,
  • Dora Iliana Medina,
  • Katerin Aguirre-Hurtado,
  • Marlene Bosquez,
  • Roberto Salcedo and
  • Alan Miralrio

Beilstein J. Nanotechnol. 2024, 15, 1170–1188, doi:10.3762/bjnano.15.95

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  • computed as −5.978 eV and that of the LUMO as −4.221 eV at the DFTB3 level. In comparison, the B3PW91 method yielded −6.116 and −3.242 eV, respectively. Thus, to consider the models obtained here, it is recommended to use DFTB3 to compute the electronic and energetic properties instead of DFT calculations
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Published 19 Sep 2024

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

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  • ][50][51], while all the simulation parameters for Ge2Se2 have been derived from the DFT calculations as discussed in the previous section. All simulation parameters are summarized in Table 1 Performance estimation Using the proposed model, we have estimated the performance of the solar cell in terms
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Published 11 Sep 2024

Local work function on graphene nanoribbons

  • Daniel Rothhardt,
  • Amina Kimouche,
  • Tillmann Klamroth and
  • Regina Hoffmann-Vogel

Beilstein J. Nanotechnol. 2024, 15, 1125–1131, doi:10.3762/bjnano.15.91

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  • b. The LCPD maps are derived from where zsurf is given by the z coordinate of the uppermost carbon atom of the GNR. s is varied from 0.17 to 1.2 nm. Additional details about the density functional theory (DFT) calculations performed in this work are given in Supporting Information File 1. Results
  • , whereas the red, dashed green, and dashed yellow curves are fits to the data as described in the text. Supporting Information Supporting Information File 56: Additional information on the DFT calculations, on the force–distance data used for transforming frequency shift information into distance
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Published 29 Aug 2024

Can neutral clusters: a two-step G0W0 and DFT benchmark

  • Sunila Bakhsh,
  • Sameen Aslam,
  • Muhammad Khalid,
  • Muhammad Sohail,
  • Sundas Zafar,
  • Sumayya Abdul Wadood,
  • Kareem Morsy and
  • Muhammad Aamir Iqbal

Beilstein J. Nanotechnol. 2024, 15, 1010–1016, doi:10.3762/bjnano.15.82

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  • methods can be used along with the standard DFT calculations. By further increasing the cluster size, the binding energy smoothly increases again. The PBE results are plotted in comparison with the reported experimental work of Balfour et al. [11] and theoretical works [1][13][17]. Comparing the reported
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Published 08 Aug 2024

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

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  • set to around 100 (M/ΔM). DFT calculations DFT-based structure optimization calculations have been performed using Gaussian 16 software [30]. All calculations were conducted using the commonly employed hybrid functional B3LYP [31] with a 6-31++G(d,p) [32][33] basis set and included the GD3 empirical
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Published 03 Jul 2024

Investigating structural and electronic properties of neutral zinc clusters: a G0W0 and G0W0Г0(1) benchmark

  • Sunila Bakhsh,
  • Muhammad Khalid,
  • Sameen Aslam,
  • Muhammad Sohail,
  • Muhammad Aamir Iqbal,
  • Mujtaba Ikram and
  • Kareem Morsy

Beilstein J. Nanotechnol. 2024, 15, 310–316, doi:10.3762/bjnano.15.28

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  • functional theory (DFT) calculations at different levels of theory to study the transition states (vdW to semiconductor-like states) in Zn clusters. In addition, the approaches used to study the electronic properties, such as ionization potentials (IPs) of zinc, are based on the ∆-SCF methods; for some
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Published 15 Mar 2024

Density functional theory study of Au-fcc/Ge and Au-hcp/Ge interfaces

  • Olga Sikora,
  • Małgorzata Sternik,
  • Benedykt R. Jany,
  • Franciszek Krok,
  • Przemysław Piekarz and
  • Andrzej M. Oleś

Beilstein J. Nanotechnol. 2023, 14, 1093–1105, doi:10.3762/bjnano.14.90

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  • . Our DFT calculations for the Au-fcc(011)/Ge(001) junction show how the presence of defects in the interface layer can help to stabilize the atomic pattern, consistent with microscopic images. Although the Au-hcp/Ge interface is characterized by a similar interface energy, it reveals large atomic
  • provide surface energy details for gold and germanium crystals and the charge density differences for the Au/Ge heterostructures. Methodology Interfacial energy and the work of separation in DFT calculations In contrast to the bulk phase of a material, the surface atoms have an incomplete set of neighbors
  • separation. Their values can be obtained from DFT calculations of the total energies of appropriate systems modeling the heterostructure as well as the bulk crystals and slabs with a vacuum layer. The methodology details (from choosing the interface model up to the optimization methods) differ between
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Published 15 Nov 2023

Fragmentation of metal(II) bis(acetylacetonate) complexes induced by slow electrons

  • Janina Kopyra and
  • Hassan Abdoul-Carime

Beilstein J. Nanotechnol. 2023, 14, 980–987, doi:10.3762/bjnano.14.81

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  • planar to the tetrahedral configuration [25]. This change of geometry has been calculated for CuL2, for which one of the ligands rotates by 90° from the planar configuration [15]. Note that the planar anion may also co-exist, but this configuration is unstable [15]. Surprisingly from the DFT calculations
  • , the neutral structure of ML2 (M: Mn, Ni, Co, and Zn) exhibits the same configuration as the stable anion [ML2]− [16][17][18][19]. According to DFT calculations, the [ML2]− anion configuration is lower in energy than the neutral configuration [15][16][17][18][19]. It has also been shown that the metal
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Published 26 Sep 2023

Isolation of cubic Si3P4 in the form of nanocrystals

  • Polina K. Nikiforova,
  • Sergei S. Bubenov,
  • Vadim B. Platonov,
  • Andrey S. Kumskov,
  • Nikolay N. Kononov,
  • Tatyana A. Kuznetsova and
  • Sergey G. Dorofeev

Beilstein J. Nanotechnol. 2023, 14, 971–979, doi:10.3762/bjnano.14.80

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  • analysis for the Si3P4 unit cell yields Γoptic = A1 + E + 2T1 + 3T2, Raman active vibrations of the representations A1, as well as E and T2, totaling five prior to splitting. DFT calculations were used to tentatively assign symmetries to the observed Raman modes (Table 2). The resultant structural
  • credited to a significant contribution of van der Waals interactions in the studied structure (The P–P distance in the vacancy was 3.22 Å, which is lower than the doubled van der Waals radius of phosphorus [35]). Slight shifts of frequencies are not uncommon for DFT calculations in such cases even when
  • precursor for diffusion doping of wafers and as anode material for Li-ion batteries. A similar method with a hydrogenation step offers the possibility to obtain other compounds, such as silicon selenides, arsenides, and sulfides. Keywords: ampoule annealing; defective zinc blende structure; DFT
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Published 26 Sep 2023

Ni, Co, Zn, and Cu metal-organic framework-based nanomaterials for electrochemical reduction of CO2: A review

  • Ha Huu Do and
  • Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 904–911, doi:10.3762/bjnano.14.74

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  • . To gain insights into the reaction pathway and to provide explanations for the observed outcome, the research team employed computational science techniques. Density functional theory (DFT) calculations implied that Co-PMOF possessed the lowest total free energy leading to its superiority as a
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Published 31 Aug 2023

Two-dimensional molecular networks at the solid/liquid interface and the role of alkyl chains in their building blocks

  • Suyi Liu,
  • Yasuo Norikane and
  • Yoshihiro Kikkawa

Beilstein J. Nanotechnol. 2023, 14, 872–892, doi:10.3762/bjnano.14.72

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  • on HOPG has been reported in some cases [44][45][46], but the flat-on orientation is more favorable [47][48][49]. For an example of the flat-on orientation, density functional theory (DFT) calculations revealed the optimized geometry of n-dodecane adsorbed onto C96H24 as a HOPG model (Figure 2a). The
  • ) as a reference can provide precise 2D structures, including intermolecular distances and molecular orientations. To study the adsorption of alkane on graphite, computational simulations such as molecular mechanics and DFT calculations with the local density approximation have been applied [48][49][53
  • ][54][55]. Recently, dispersion-corrected DFT calculations have quantitatively revealed the interactions between n-alkanes and circumcoronene as models of molecular adsorption on HOPG [47]. As the number of carbon atoms in the n-alkane increased, the adsorption energy increased by −1.85 kcal/mol per
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Published 23 Aug 2023

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

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  • in this study. In contrast, the simplicity of the Morse potential allowed us to represent the interactions between the argons atoms with full valence band and the sample atoms. As described in [26], a set of DFT calculations were performed using VASP to compute the Morse potential for argon–silicon
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Published 01 Aug 2023

Transferability of interatomic potentials for silicene

  • Marcin Maździarz

Beilstein J. Nanotechnol. 2023, 14, 574–585, doi:10.3762/bjnano.14.48

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  • ] as an exchange–correlation functional, and optimized norm-conserving Vanderbilt pseudopotential [22] (ONCVPP) are similar. Cut-off energy and electron configuration of Si were used in the DFT calculations according to the pseudopotential and Gaussian smearing scheme with tsmear (Ha) = 0.02. To
  • molecular calculations, the molecular statics (MS) method, T = 0 K [28][29][30], was used by means of the “large-scale atomic/molecular massively parallel simulator” (LAMMPS) [31] and analyzed by means of the “Open Visualization Tool” (OVITO) [32]. As for DFT calculations, the structures here were fully pre
  • silicon and five polymorphs of silicon dioxide SNAP [43]: the machine-learning-based (ML-IAP) linear variant of spectral neighbor analysis potential (SNAP) fitted to total energies and interatomic forces in ground-state Si, strained structures, and slab structures obtained from DFT calculations qSNAP [43
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Published 08 May 2023

Conjugated photothermal materials and structure design for solar steam generation

  • Chia-Yang Lin and
  • Tsuyoshi Michinobu

Beilstein J. Nanotechnol. 2023, 14, 454–466, doi:10.3762/bjnano.14.36

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  • can be predicted by density functional theory (DFT) calculations of the conjugated structures. This is an advantage over other carbon materials, even if they are of the same chemical composition [18][19][20][21][22]. We review the recent progress in the material development of conjugated solar
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Published 04 Apr 2023

From a free electron gas to confined states: A mixed island of PTCDA and copper phthalocyanine on Ag(111)

  • Alfred J. Weymouth,
  • Emily Roche and
  • Franz J. Giessibl

Beilstein J. Nanotechnol. 2022, 13, 1572–1577, doi:10.3762/bjnano.13.131

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  • molecules were close to each other implying little direct interaction [17]. Stadtmüller et al. extensively studied the P2C phase with STM, dI/dV measurements, and DFT calculations [18]. They showed that while an isolated CuPc molecule on Ag(111) has a level that is half-filled, this level shifts above the
  • emptied and is above the Fermi level. Their DFT calculations show the F-LUMO peak to be around 0.2 V, and the dI/dV spectra show features at 0.6 V [18]. Figure 2b does not contain a peak in the dI/dV spectra over the CuPc molecules at the Fermi level but rather a peak between the Fermi level and 1 V. This
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Published 22 Dec 2022

Single-step extraction of small-diameter single-walled carbon nanotubes in the presence of riboflavin

  • Polina M. Kalachikova,
  • Anastasia E. Goldt,
  • Eldar M. Khabushev,
  • Timofei V. Eremin,
  • Timofei S. Zatsepin,
  • Elena D. Obraztsova,
  • Konstantin V. Larionov,
  • Liubov Yu. Antipina,
  • Pavel B. Sorokin and
  • Albert G. Nasibulin

Beilstein J. Nanotechnol. 2022, 13, 1564–1571, doi:10.3762/bjnano.13.130

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  • set to 5 nm and an acquisition time of 30 s. DFT calculations Each riboflavin molecule was represented as an isoalloxazine group together with a ribityl side chain (C17H20N4O6). The DFT within the local density approximation for the exchange–correlation functional employing norm-conserving Troullier
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Published 22 Dec 2022

Role of titanium and organic precursors in molecular layer deposition of “titanicone” hybrid materials

  • Arbresha Muriqi and
  • Michael Nolan

Beilstein J. Nanotechnol. 2022, 13, 1240–1255, doi:10.3762/bjnano.13.103

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  • bridging/bidentate mixed bonding mode at temperatures over 250 °C and 300 °C [32]. Many studies show that the desired properties and the target thickness of a metalcone MLD film are not actually achieved. To help understand this, first principles density functional theory (DFT) calculations have been
  • . Based on the calculated energetics we propose that a low temperature rutile TiO2/TiCl4–EG process and rutile TiO2/TiCl4–GL process can lead to thicker hybrid films. Computational Methods All DFT calculations in this work were performed using the Vienna Ab initio Simulation Package (VASP) version 5.4 [49
  • that the experimental data are not immediately comparable since different deposition temperatures are used, with significantly higher temperatures for the GL process compared to the EG process which may favour the flat-lying configuration. In summary, DFT calculations show that while in a anatase TiO2
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Published 02 Nov 2022

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

  • Yinglin Ma,
  • Xiangyun Xiao and
  • Qingmin Ji

Beilstein J. Nanotechnol. 2022, 13, 1201–1219, doi:10.3762/bjnano.13.100

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  • most exposed surface of Au(324). The QCM adsorption in aqueous solutions of amino acids showed that ᴅ-type amino acids prefer to adsorb on the surface. The DFT calculations further proved that the enantioselective adsorption in this system is probably caused by the existence of chiral planes in the
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Published 27 Oct 2022
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