Search NASA⌕ Search
Home/Archive/DOE OSTI

DOE OSTI · 3378230

Surface deposition of nanometer scale carbon structures on Bi 2 Sr 2 CaCu 2 O 8+δ using a low-cost scanning electron microscope

Porter, Ty [University of Northern Iowa, Cedar Falls, IA (United States)] (ORCID:0009000294848776)·Hemesath, Colin M. [University of Northern Iowa, Cedar Falls, IA (United States)]·Lukashev, Pavel V. [University of Northern Iowa, Cedar Falls, IA (United States)] (ORCID:0000000225515954)·Ye, Gaihua [Texas Tech Univ., Lubbock, TX (United States)] (ORCID:0009000527919636)·Nnokwe, Cynthia [Texas Tech Univ., Lubbock, TX (United States)] (ORCID:0000000261061101)·He, Rui [Texas Tech Univ., Lubbock, TX (United States)] (ORCID:0000000223687269)·Wei, Bingqiang [Ames Laboratory (AMES), Ames, IA (United States)]·Zhou, Lin [Ames Laboratory (AMES), Ames, IA (United States); Univ. of Virginia, Charlottesville, VA (United States)] (ORCID:0000000322866510)·Gu, Genda [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:0000000298863255)·Shand, Paul M. [University of Northern Iowa, Cedar Falls, IA (United States)] (ORCID:0000000222412634)·Kidd, Timothy E. [University of Northern Iowa, Cedar Falls, IA (United States)] (ORCID:0000000208199400)·Stollenwerk, Andrew J. [University of Northern Iowa, Cedar Falls, IA (United States)] (ORCID:0000000170831182)
View original source ↗Read source document ↗Export metadata ↓

Abstract

In this work, we investigate optically active nanostructures on Bi 2 Sr 2 CaCu 2 O 8+δ (BSCCO). The nanostructures are constructed from carbon nanocrystals formed using the electron beam of a scanning electron microscope to locally decompose residual hydrocarbons at the BSCCO surface. Atomic force microscopy is used to characterize the dimensions of these structures as a function of beam exposure time. This technique has been used to induce localized intercalation to form carbon nanoparticles up to tens of nanometers into a variety of 2D materials. Cross-sectional scanning transmission electron microscopy in BSCCO shows the presence of these carbon deposits on the surface, but there is no evidence they penetrate into the BSCCO substrate. Therefore, this technique is not suitable for localized intercalation in BSCCO, and it does have promise as a cost-effective approach to pattern nanometer scale etch stops.

Explore related subjects

2D materials75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYAtomic force microscopyCarbon based materialsChemical elementsNanocrystalsNanoparticlePhotolithographyScanning electron microscopySupramolecular chemistryTransmission electron microscopy

Keep this discovery

BibTeXRIS

Porter, Ty [University of Northern Iowa, Cedar Falls, IA (United States)] (ORCID:0009000294848776), Hemesath, Colin M. [University of Northern Iowa, Cedar Falls, IA (United States)], Lukashev, Pavel V. [University of Northern Iowa, Cedar Falls, IA (United States)] (ORCID:0000000225515954), Ye, Gaihua [Texas Tech Univ., Lubbock, TX (United States)] (ORCID:0009000527919636), Nnokwe, Cynthia [Texas Tech Univ., Lubbock, TX (United States)] (ORCID:0000000261061101), He, Rui [Texas Tech Univ., Lubbock, TX (United States)] (ORCID:0000000223687269), Wei, Bingqiang [Ames Laboratory (AMES), Ames, IA (United States)], Zhou, Lin [Ames Laboratory (AMES), Ames, IA (United States); Univ. of Virginia, Charlottesville, VA (United States)] (ORCID:0000000322866510), Gu, Genda [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:0000000298863255), Shand, Paul M. [University of Northern Iowa, Cedar Falls, IA (United States)] (ORCID:0000000222412634), Kidd, Timothy E. [University of Northern Iowa, Cedar Falls, IA (United States)] (ORCID:0000000208199400), Stollenwerk, Andrew J. [University of Northern Iowa, Cedar Falls, IA (United States)] (ORCID:0000000170831182). 2025-12-18. Surface deposition of nanometer scale carbon structures on Bi 2 Sr 2 CaCu 2 O 8+δ using a low-cost scanning electron microscope. https://doi.org/10.1116/6.0005045

Cite the original work for its findings. Save a collection to share your selection of sources.

Discover connections

2D materials subject75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY subjectatomic force microscopy subject

Connections use source metadata and explicit phrase matches, not verified experimental comparisons.

KEEP EXPLORING

Related discoveries

DOE OSTI2026

Microscopic Scattering Approach to In-Gap States

We develop a microscopic scattering formalism to describe Yu-Shiba-Rusinov (YSR) states due to a single Cr adatom on the Bi-terminated surface of beta Bi2Pd, by combining ab initio Wannier functions with a real-space Green's function approach in the Bogoliubov-de Gennes formalism[1]. Our framework reproduces key scanning tunneling spectroscopy features, including a single particle-hole asymmetric YSR peak and isotropic dIdV maps around the impurity. Decomposing the YSR states reveals contributions from four nearly degenerate C4v representations, with energy broadening masking their individual signatures. Spin-orbit coupling induces partial spin polarization, while the spatial asymmetry between particle and hole components arises from Cr d-Bi p hybridization. These results highlight the importance of realistic band structures and microscopic modeling for interpreting STM data for magnetic in-gap states on superconductors. Further advances examining layered 2D material surfaces, such as NbSe2, will be described[2]. For this system the superconducting properties are obtained from a full anisotropic Eliashberg calculation of the superconducting order parameter along with the charge density wave gap. Additional features associated with proposals to measure the dynamics of these individual YSR states will be presented. [1] arXiv:2507.08740 [2] arXiv:2507.11856

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗
DOE OSTI2026

Operando microscopy for neuromorphic hardware

Microscopy techniques can uncover the physical properties and dynamic behaviours of materials, driving the discovery of emergent phenomena and guiding the design of next-generation computing hardware. As artificial intelligence becomes pervasive, the demand for high-performance materials to support sustainable information technologies is growing. Here, this Review highlights state-of-the-art imaging from electron and X-ray to optical techniques to probe the dynamics of neuromorphic materials, including operando characterization of devices. We examine design principles for neuromorphic materials, along with obstacles that hinder their development. Emphasis is placed on spatially and temporally resolved approaches that capture state changes including phase transitions, ferroic switching and spin-wave propagation that emulate biological components such as neurons, synapses and their connectivity. We discuss challenges in operando characterization and the integration of artificial intelligence-driven analysis for feedback-guided material discovery. Finally, we outline opportunities for real-time imaging of neuromorphic systems, paving the way towards adaptive, brain-inspired hardware.

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗
DOE OSTI2025

Twist Engineering of Anisotropic Excitonic and Optical Properties of a Two-Dimensional Magnetic Semiconductor

Two-dimensional (2D) van der Waals (vdW) magnetic semiconductors are a new class of quantum materials for studying the emergent physics of excitons and spins in the 2D limit. Twist engineering provides a powerful tool to manipulate the fundamental properties of 2D vdW materials. Here, in this work, we show that twist engineering of the anisotropic ferromagnetic monolayer semiconductor CrSBr leads to bilayer magnetic semiconductors with continuously tunable magnetic moment, dielectric anisotropy, exciton energy, and linear dichroism. We furthermore provide a model for exciton energy in the media with tunable anisotropy. These results advance fundamental studies of 2D vdW materials and open doors to applications to nano-optics, twistronics, and spintronics.

36 MATERIALS SCIENCE↗