Correction to: MRS Advances (2022) 7:337–341 https://doi.org/10.1557/s43580-022-00245-y

The authors would like to correct the following:

  1. 1.

    Replacement of Fig. 1B with new image and caption:

    The authors would like to replace Fig. 1B with spectra results from confocal Raman microscopy. TEM results (Fig. 1B) were included in the original paper without consensus and knowledge of the scientist who did the TEM analysis before the submission. From the TEM analysis, it was concluded that the films did not show the presence of any carbon layers, but the presence of cracks. Figure 1B was obtained from one of the cracks as pointed out by the scientist who did the TEM analysis, and thus cannot be used to represent the carbon layer. Given that we do not have the TEM results that show the claimed carbon layers, the original Fig. 1B will be replaced with a new Fig. 1B, a result from a confocal Raman microscope that indicated the existence of carbon layers beneath the silica layer. The carbon black layer is identified by two distinct D and G bands near 1320 cm−1 and 1610 cm−1, respectively.

figure a

New Fig. 1B: Raman spectra obtained by confocal Raman Microscope showing the existence of carbon black layer as laser is penetrated and focused beyond the top silica layer. Peak at ~ 520 cm−1 is from the crystalline silicon substrate, whereas the peak at ~ 950 cm−1 representing Si–O–Si vibration from the coated silica layer. The carbon black layer is characterized by two distinct D and G bands near 1320 cm−1 and 1610 cm−1, respectively.

  1. 2.

    The sentence in the Results and discussion of the article: Pyrolysis of sugar at temperature > 200 °C forms polycyclic aromatic carbon black sheets [8] (the carbon black layer is only 10–20 nm thick (Fig. 1B))

    Should read “Pyrolysis of sugar at temperature > 200 °C forms polycyclic aromatic carbon black sheets [8]”.

  2. 3.

    The sentence in the Materials and methods of the article: About 0.111 g of sugar was mixed with 6.408 g EtOH + 20 mL deionized H2O to form the coating solution for the sugar layer. The sugar solution was filtered using a 0.25 mm pore filter before coating

    Should read “About 0.111 g of sugar was mixed with 6.408 g EtOH +20 μL deionized H2O to form the coating solution for the sugar layer. The sugar solution was filtered using a 0.25 μm pore filter before coating”.

  3. 4.

    The sentence in the Materials and methods of the article: Approximately 20–30 mL sol–gel silica solution or sugar solution was used for each layer

    Should read “Approximately 20–30 μL sol–gel silica solution or sugar solution was used for each layer”.

  4. 5.

    The acknowledgement section should read:

    This article has been authored by an employee of National Technology & Engineering Solutions of Sandia, LLC under Contract No. DE-NA0003525 with the U.S. Department of Energy (DOE). The employee owns all right, title and interest in and to the article and is solely responsible for its contents. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this article or allow others to do so, for United States Government purposes. The DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan https://www.energy.gov/downloads/doe-public-access-plan. This work was supported by the LDRD mission campaign project 222337. This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government. Dan Long is thanked for obtaining SEM images, and Nastia Ilgen for assistance on nanoindentation. Nathan Moore and Greg Frye-Mason are thanked for discussions.