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Search for "light source" in Full Text gives 203 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Impact of fluorination on interface energetics and growth of pentacene on Ag(111)

  • Qi Wang,
  • Meng-Ting Chen,
  • Antoni Franco-Cañellas,
  • Bin Shen,
  • Thomas Geiger,
  • Holger F. Bettinger,
  • Frank Schreiber,
  • Ingo Salzmann,
  • Alexander Gerlach and
  • Steffen Duhm

Beilstein J. Nanotechnol. 2020, 11, 1361–1370, doi:10.3762/bjnano.11.120

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  • close to monolayer coverage. The high-resolution XPS (HR-XPS) and normal-incidence XSW (NIXSW) experiments were performed at beamline I09 at Diamond Light Source (DLS, UK) using both the soft (110–1100 eV) and hard (2.1–18 keV) X-ray beams [104][105]. Sample preparation and measurements were performed
  • , C 1s and F 1s core levels, full UPS survey spectra, XRD measurement and analysis of PFP on Ag(111) and a set of XSW measurements. Supporting Information File 158: Additional experimental data. Acknowledgements The authors thank the Diamond Light Source for access to beamline I09, and the staff, in
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Published 08 Sep 2020

Thermophoretic tweezers for single nanoparticle manipulation

  • Jošt Stergar and
  • Natan Osterman

Beilstein J. Nanotechnol. 2020, 11, 1126–1133, doi:10.3762/bjnano.11.97

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  • implemented using a custom-built fluorescence microscope. By using an LED-optimized filter cube (Dapi/FITC/Cy3/Cy5 Quad LED HC Filter Set, AHF analysentechnik AG), Köhler illumination is utilized for fluorescence imaging using an LED as its light source. Light is collected from the sample plane by a 63
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Published 30 Jul 2020

A few-layer graphene/chlorin e6 hybrid nanomaterial and its application in photodynamic therapy against Candida albicans

  • Selene Acosta,
  • Carlos Moreno-Aguilar,
  • Dania Hernández-Sánchez,
  • Beatriz Morales-Cruzado,
  • Erick Sarmiento-Gomez,
  • Carla Bittencourt,
  • Luis Octavio Sánchez-Vargas and
  • Mildred Quintana

Beilstein J. Nanotechnol. 2020, 11, 1054–1061, doi:10.3762/bjnano.11.90

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  • viability of C. albicans in the presence of FLG-Ce6 was measured 48 h after photoactivation. An antifungal effect was observed only when the culture/FLG-Ce6 hybrid was exposed to the light source. C. albicans is rendered completely unviable after exposure to ROS generated by the excited FLG-Ce6 hybrid
  • materials as candidates for photosensitizers in PDT [31][32]. An FLG and Ce6 hybrid nanomaterial (FLG-Ce6) was used as the photosensitizer in combination with a red light-emitting diode (LED) array as the photoactivation light source. The conjugated system of graphene π-electrons improves the performance of
  • Ce6 through the donation of electrons that delay its photobleaching. In this way the production of reactive oxygen species is optimized and a better effect against C. albicans is achieved with a low concentration of photosensitizer and a short exposure time to the red LED light source. Results and
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Published 17 Jul 2020

A new photodetector structure based on graphene nanomeshes: an ab initio study

  • Babak Sakkaki,
  • Hassan Rasooli Saghai,
  • Ghafar Darvish and
  • Mehdi Khatir

Beilstein J. Nanotechnol. 2020, 11, 1036–1044, doi:10.3762/bjnano.11.88

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  • [28][29]: where is the Hamiltonian without light–electron interaction and e is the electron charge, m0 is the free electron mass, is the momentum operator, and A is the electromagnetic vector potential. Assuming a single-mode monochromatic light source, the first-order Born electron–photon self
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Published 15 Jul 2020

Effect of Ag loading position on the photocatalytic performance of TiO2 nanocolumn arrays

  • Jinghan Xu,
  • Yanqi Liu and
  • Yan Zhao

Beilstein J. Nanotechnol. 2020, 11, 717–728, doi:10.3762/bjnano.11.59

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  • photocatalysis was performed under 300 W Xe light using 15 mL of a 5 ppm MB aqueous solution. Before starting the photocatalysis, the sample was immersed in the MB solution and allowed to remain in the dark for 30 min to reach the adsorption–desorption balance. Then, the solution was placed under a light source
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Published 05 May 2020

Soybean-derived blue photoluminescent carbon dots

  • Shanshan Wang,
  • Wei Sun,
  • Dong-sheng Yang and
  • Fuqian Yang

Beilstein J. Nanotechnol. 2020, 11, 606–619, doi:10.3762/bjnano.11.48

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  • -Alpha X-ray photoelectron spectrometer to determine the chemical states of elements in the prepared carbon nanoparticles. The PL characteristics of the prepared carbon nanoparticles were characterized on a fluorometer (HORIBA, Fluoromax-3) equipped with a xenon lamp of 120 W as the light source. The
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Published 09 Apr 2020

Evolution of Ag nanostructures created from thin films: UV–vis absorption and its theoretical predictions

  • Robert Kozioł,
  • Marcin Łapiński,
  • Paweł Syty,
  • Damian Koszelow,
  • Wojciech Sadowski,
  • Józef E. Sienkiewicz and
  • Barbara Kościelska

Beilstein J. Nanotechnol. 2020, 11, 494–507, doi:10.3762/bjnano.11.40

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  • from the SiO2 layer do not exceed 2%. A light source of 460 nm wavelength has been used, propagating along the y axis direction. Two independent simulations were performed, one with a transverse-electric (TE) polarized beam and the second one with a transverse-magnetic (TM) polarized beam. These
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Published 25 Mar 2020

Rational design of block copolymer self-assemblies in photodynamic therapy

  • Maxime Demazeau,
  • Laure Gibot,
  • Anne-Françoise Mingotaud,
  • Patricia Vicendo,
  • Clément Roux and
  • Barbara Lonetti

Beilstein J. Nanotechnol. 2020, 11, 180–212, doi:10.3762/bjnano.11.15

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  • treatment response [25]. Among all these, the adaptation of light source and dosimetry is currently a very active field. Indeed, protocols adapting the irradiation are tested based on daylight or continuous [26] low irradiation, or using special devices such as fabrics [27] or catheters. The light sources
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Published 15 Jan 2020

Influence of the epitaxial composition on N-face GaN KOH etch kinetics determined by ICP-OES

  • Markus Tautz,
  • Maren T. Kuchenbrod,
  • Joachim Hertkorn,
  • Robert Weinberger,
  • Martin Welzel,
  • Arno Pfitzner and
  • David Díaz Díaz

Beilstein J. Nanotechnol. 2020, 11, 41–50, doi:10.3762/bjnano.11.4

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  • ICP-OES analysis. Methods PLM images were recorded directly after epitaxy on an Olympus BX51 microscope combined with an Olympus U-RFL-T UV light source. For excitation, 408 nm wavelength light was used. X-ray diffraction (XRD) was measured on a Bruker/Jordan Valley QC Velox. Scanning electron
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Published 03 Jan 2020

Gold and silver dichroic nanocomposite in the quest for 3D printing the Lycurgus cup

  • Lars Kool,
  • Floris Dekker,
  • Anton Bunschoten,
  • Glen J. Smales,
  • Brian R. Pauw,
  • Aldrik H. Velders and
  • Vittorio Saggiomo

Beilstein J. Nanotechnol. 2020, 11, 16–23, doi:10.3762/bjnano.11.2

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  • because of its fascinating dichroic property. The cup presents a green colour when the observer and the light source are on the same side (reflection), and a deep red colour when the observer and the light source are at opposite sides (transmission) [4]. This peculiar effect, which has perplexed
  • behaviour surprised us in the beginning, it is obvious that scattering and reflection are highly influenced by the light source, meaning that an object can scatter and reflect only wavelengths that are present in the light source. If the light source lacks, for example, strong intensities in the red region
  • the same dichroic effect of the Lycurgus cup. Comparison between the original Lycurgus cup and the 3D printed Ag/Au@PVA nanocomposite cup presented in this research using the flashlight LED as the light source. The boxed colours represent the majority of the colour of the cups in reflection and in
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Published 02 Jan 2020

Semitransparent Sb2S3 thin film solar cells by ultrasonic spray pyrolysis for use in solar windows

  • Jako S. Eensalu,
  • Atanas Katerski,
  • Erki Kärber,
  • Lothar Weinhardt,
  • Monika Blum,
  • Clemens Heske,
  • Wanli Yang,
  • Ilona Oja Acik and
  • Malle Krunks

Beilstein J. Nanotechnol. 2019, 10, 2396–2409, doi:10.3762/bjnano.10.230

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  • of Nevada, Las Vegas (UNLV), 4505 Maryland Parkway, Las Vegas, NV 89154-4003, USA Institute for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron
  • PGSTAT302). The contact material for both measurements was deposited from an aqueous graphite ink from Alfa Aesar. S L2,3 soft X-ray emission spectra of Sb2S3 were measured using the SALSA endstation [72], at the open port of Beamline 8.0.1 of the Advanced Light Source (ALS), at Lawrence Berkeley National
  • source meter. The light intensity was regulated for the light intensity dependence measurements using gray filters (metal meshes with varied hole size). The external quantum efficiency (EQE) spectra were measured using a monochromatized light source (Newport 300 W Xenon lamp, 69911 with a monochromator
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Published 06 Dec 2019

Design of a nanostructured mucoadhesive system containing curcumin for buccal application: from physicochemical to biological aspects

  • Sabrina Barbosa de Souza Ferreira,
  • Gustavo Braga,
  • Évelin Lemos Oliveira,
  • Jéssica Bassi da Silva,
  • Hélen Cássia Rosseto,
  • Lidiane Vizioli de Castro Hoshino,
  • Mauro Luciano Baesso,
  • Wilker Caetano,
  • Craig Murdoch,
  • Helen Elizabeth Colley and
  • Marcos Luciano Bruschi

Beilstein J. Nanotechnol. 2019, 10, 2304–2328, doi:10.3762/bjnano.10.222

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Published 25 Nov 2019

Optimization and performance of nitrogen-doped carbon dots as a color conversion layer for white-LED applications

  • Tugrul Guner,
  • Hurriyet Yuce,
  • Didem Tascioglu,
  • Eren Simsek,
  • Umut Savaci,
  • Aziz Genc,
  • Servet Turan and
  • Mustafa M. Demir

Beilstein J. Nanotechnol. 2019, 10, 2004–2013, doi:10.3762/bjnano.10.197

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  • .) attached to a USB2000+ spectrometer (Ocean Optics Inc., Dunedin, FL, USA) with a premium fiber cable. A commercial blue LED chip (CREE, 450 nm, royal blue) was used as the blue light source. The morphology of the produced N-CDot fibers was analyzed by scanning electron microscopy (SEM; Quanta 250, FEI
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Published 15 Oct 2019

The influence of porosity on nanoparticle formation in hierarchical aluminophosphates

  • Matthew E. Potter,
  • Lauren N. Riley,
  • Alice E. Oakley,
  • Panashe M. Mhembere,
  • June Callison and
  • Robert Raja

Beilstein J. Nanotechnol. 2019, 10, 1952–1957, doi:10.3762/bjnano.10.191

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  • Consortium and funded by EPSRC grant: EP/R026815/1. The authors wish to acknowledge the Diamond Light Source and the UK Catalysis Hub for provision of beamtime (proposal number SP19850-2). Dr. Mark Isaacs and HarwellXPS are thanked for their assistance collecting the XPS data for this work.
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Published 25 Sep 2019

BiOCl/TiO2/diatomite composites with enhanced visible-light photocatalytic activity for the degradation of rhodamine B

  • Minlin Ao,
  • Kun Liu,
  • Xuekun Tang,
  • Zishun Li,
  • Qian Peng and
  • Jing Huang

Beilstein J. Nanotechnol. 2019, 10, 1412–1422, doi:10.3762/bjnano.10.139

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  • degradation product and visible light (λ > 400 nm) was used as the light source for the evaluation of the photocatalytic properties of the prepared BTD composite. The results show that the catalytic performance of the BTD composite under visible-light irradiation is much higher than that of TiO2 or BiOCl
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Published 16 Jul 2019

Kelvin probe force microscopy of the nanoscale electrical surface potential barrier of metal/semiconductor interfaces in ambient atmosphere

  • Petr Knotek,
  • Tomáš Plecháček,
  • Jan Smolík,
  • Petr Kutálek,
  • Filip Dvořák,
  • Milan Vlček,
  • Jiří Navrátil and
  • Čestmír Drašar

Beilstein J. Nanotechnol. 2019, 10, 1401–1411, doi:10.3762/bjnano.10.138

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  • millimeter (period 500 nm) as a photomask. The material was illuminated with a UV light source LC08 (Hamamatsu) emitting at wavelengths of 310 and 360 nm; total intensity 0.8 W/cm2 for 60 s [37][38]. The e-beam diffusion was realized by a SEM JEOL JSM 5500-LV in an of area 8 × 10 µm2 with an acceleration
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Published 15 Jul 2019

Fabrication of phase masks from amorphous carbon thin films for electron-beam shaping

  • Lukas Grünewald,
  • Dagmar Gerthsen and
  • Simon Hettler

Beilstein J. Nanotechnol. 2019, 10, 1290–1302, doi:10.3762/bjnano.10.128

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  • thickness profile showed considerable deviations from the ideal structure. Experimental For (positive) optical lithography we used a spin coater from POLOS to coat our wafers with a TI35ES resist (Microchemicals GmbH). Lithography masks for a mask aligner (MA6 by SÜSS MicroTec, light source with λ = 356 nm
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Published 25 Jun 2019

Synthesis of novel C-doped g-C3N4 nanosheets coupled with CdIn2S4 for enhanced photocatalytic hydrogen evolution

  • Jingshuai Chen,
  • Chang-Jie Mao,
  • Helin Niu and
  • Ji-Ming Song

Beilstein J. Nanotechnol. 2019, 10, 912–921, doi:10.3762/bjnano.10.92

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  • , Beijing) equipped with a 420 nm optical filter (to cut off ultraviolet light) was placed on top as the light source. The system was degassed before irradiation and the evolution of hydrogen was detected by inline gas chromatography (CEL-GC7920, TCD, 5A molecular sieve column and N2 as carrier gas
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Published 18 Apr 2019

Towards rare-earth-free white light-emitting diode devices based on the combination of dicyanomethylene and pyranine as organic dyes supported on zinc single-layered hydroxide

  • Jeff L. Nyalosaso,
  • Rachod Boonsin,
  • Pierre Vialat,
  • Damien Boyer,
  • Geneviève Chadeyron,
  • Rachid Mahiou and
  • Fabrice Leroux

Beilstein J. Nanotechnol. 2019, 10, 760–770, doi:10.3762/bjnano.10.75

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  • how truly the colour of an object is represented by a light source compared to a black-body source. Fifteen standard colour swatches (termed R1 through R15) plus the international standard colour rendering index Ra are represented in Figure 8. In the HPTS/DCM/LED configuration, all the colour indices
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Published 25 Mar 2019

Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)

  • Miguel A. Andrés,
  • Clemence Sicard,
  • Christian Serre,
  • Olivier Roubeau and
  • Ignacio Gascón

Beilstein J. Nanotechnol. 2019, 10, 654–665, doi:10.3762/bjnano.10.65

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  • balances with a filter paper plate. BAM images were obtained using a KSV NIMA Micro BAM, equipped with a red laser light source (50 mW, 659 nm) with a fixed incidence angle of 53.1°. The spatial resolution of this optical system in the water surface plane is 6 µm per pixel. Chloroform (CHCl3, Macron, >99.8
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Published 06 Mar 2019

Review of time-resolved non-contact electrostatic force microscopy techniques with applications to ionic transport measurements

  • Aaron Mascaro,
  • Yoichi Miyahara,
  • Tyler Enright,
  • Omur E. Dagdeviren and
  • Peter Grütter

Beilstein J. Nanotechnol. 2019, 10, 617–633, doi:10.3762/bjnano.10.62

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  • . One example of this is in time-resolved Kelvin probe force microscopy (KPFM) experiments that measure the surface photovoltage of a sample as a function of time after a light source is pulsed. This was first implemented by Takihara et al. to measure the photovoltage dynamics of a sample at time scales
  • by the detection electronics, but instead is theoretically limited only by the thermal noise of the cantilever [18]. This principle can be easily extended to ionic systems (such as those discussed previously) by simply replacing the pulsed light source with a pulsed voltage. In this case, the
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Published 01 Mar 2019

Direct observation of the CVD growth of monolayer MoS2 using in situ optical spectroscopy

  • Claudia Beatriz López-Posadas,
  • Yaxu Wei,
  • Wanfu Shen,
  • Daniel Kahr,
  • Michael Hohage and
  • Lidong Sun

Beilstein J. Nanotechnol. 2019, 10, 557–564, doi:10.3762/bjnano.10.57

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  • performed in a confocal microconfiguration using a ×100 microscope objective lens and a 2400 grooves mm−1 grating. For DR measurements, an inverted microscope (Nikon Eclipse Ti) was used. A beam from a tungsten halogen white light source was reflected into a ×50 ultra-long working distance objective using a
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Published 26 Feb 2019

Ultraviolet patterns of flowers revealed in polymer replica – caused by surface architecture

  • Anna J. Schulte,
  • Matthias Mail,
  • Lisa A. Hahn and
  • Wilhelm Barthlott

Beilstein J. Nanotechnol. 2019, 10, 459–466, doi:10.3762/bjnano.10.45

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  • integrating sphere on the opposite side of the opening where the light source was situated. The polymer replicas were colored black using black dye and a thin layer of carbon black was embedded at the backside of the replicas. Both steps were undertaken to avoid reflection at the backside of the replicas and
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Published 13 Feb 2019

Surface plasmon resonance enhancement of photoluminescence intensity and bioimaging application of gold nanorod@CdSe/ZnS quantum dots

  • Siyi Hu,
  • Yu Ren,
  • Yue Wang,
  • Jinhua Li,
  • Junle Qu,
  • Liwei Liu,
  • Hanbin Ma and
  • Yuguo Tang

Beilstein J. Nanotechnol. 2019, 10, 22–31, doi:10.3762/bjnano.10.3

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  • future research. We chose the longer absorption peak of the GNRs as equivalent to the QD PL emission peak. When the QDs and GNRs are coupled together, two kinds of nanostructured particles were combined by mutual electrostatic adsorption. The PL of the QDs could then be used as the light source to excite
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Published 03 Jan 2019

A new bioinspired method for pressure and flow sensing based on the underwater air-retaining surface of the backswimmer Notonecta

  • Matthias Mail,
  • Adrian Klein,
  • Horst Bleckmann,
  • Anke Schmitz,
  • Torsten Scherer,
  • Peter T. Rühr,
  • Goran Lovric,
  • Robin Fröhlingsdorf,
  • Stanislav N. Gorb and
  • Wilhelm Barthlott

Beilstein J. Nanotechnol. 2018, 9, 3039–3047, doi:10.3762/bjnano.9.282

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  • Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland Department of Functional Morphology and Biomechanics, Institute of Zoology, Christian-Albrechts-Universität zu Kiel, Am Botanischen Garten 1–9, D-24118 Kiel, Germany 10.3762
  • pixel size of 3 µm. Synchrotron-µCT of basal hemelytra More detailed cross sections of parts of a hemelytron were created at the Swiss Light Source synchrotron of the Paul Scherrer Institute (PSI; Villigen, Switzerland; X02DA TOMCAT beamline). The X-rays, produced by a 2.9 T superbending magnet on a 2.4
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Published 14 Dec 2018
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