Article
Physics, Multidisciplinary
Ainitze Biteri-Uribarren, Pol Alsina-Bolivar, Carlos Munuera-Javaloy, Ricardo Puebla, Jorge Casanova
Summary: This study tackles the detection of individual molecules by combining a hybrid sensor-a nitrogen vacancy center (NV) and a dangling bond on the diamond surface-with a multi-tone dynamical decoupling sequence. Via numerical simulations, the authors prove that the sequence minimizes the impact of decoherence, which allows using the dangling-bond as a signal amplifier.
COMMUNICATIONS PHYSICS
(2023)
Article
Physics, Multidisciplinary
Jonas Meinel, Minsik Kwon, Rouven Maier, Durga Dasari, Hitoshi Sumiya, Shinobu Onoda, Junichi Isoya, Vadim Vorobyov, Joerg Wrachtrup
Summary: In this study, a new method for detecting nuclear magnetic resonance (NMR) signals at high magnetic fields using heterodyne detection is introduced. By utilizing a series of phase coherent electron nuclear double resonance sensing blocks, the limitations of heterodyne detection at high magnetic fields are overcome, allowing for chemical shift resolution in NMR experiments.
COMMUNICATIONS PHYSICS
(2023)
Article
Physics, Multidisciplinary
Wentian Zheng, Ke Bian, Xiakun Chen, Yang Shen, Shichen Zhang, Rainer Stohr, Andrej Denisenko, Jorg Wrachtrup, Sen Yang, Ying Jiang
Summary: An efficient method was developed to engineer the electrostatic environment of near-surface nitrogen vacancy center qubits, increasing their coherence and sensitivity.
Article
Chemistry, Multidisciplinary
Nuan Lin, Koen van Zomeren, Teelkien van Veen, Aldona Mzyk, Yue Zhang, Xiaoling Zhou, Torsten Plosch, Uwe J. F. Tietge, Astrid Cantineau, Annemieke Hoek, Romana Schirhagl
Summary: Cumulus granulosa cells (cGCs) and mural granulosa cells (mGCs) are anatomically and functionally heterogeneous, but play critical roles in female fertility. Investigating the role of free radicals in these cells has been challenging due to limited temporal and spatial resolution. However, a quantum sensing approach using fluorescent nanodiamonds (FNDs) revealed that mitochondria are sites of free radical generation, and cGCs may be more resistant to oxidative stress compared to mGCs.
ACS CENTRAL SCIENCE
(2023)
Article
Multidisciplinary Sciences
David Beriashvili, Raymond D. Schellevis, Federico Napoli, Markus Weingarth, Marc Baldus
Summary: Membrane proteins are crucial for cell function and are important drug targets. Solid-state Nuclear Magnetic Resonance (ssNMR) spectroscopy provides a unique approach to study the structure and dynamics of these proteins in biological membranes. High-sensitivity ssNMR methods such as proton-(H-1)-detected ssNMR and DNP supported ssNMR can be used to derive structural and motional information effectively.
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2021)
Article
Chemistry, Inorganic & Nuclear
Jingbo Yu, Lili Hu, Jinjun Ren
Summary: The study found that La3+ ions have promotion and suppression effects on the crystallization of PbF2, with a stronger attraction ability compared to Pb2+ ions. Intensive upconversion visible luminescence was observed in rare earth ion-doped oxyfluoride glasses, with most Er3+ ions dissolved in the LaF3 crystal.
INORGANIC CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Mark Fuzesi, Isabella H. Muti, Yannick Berker, Wei Li, Joseph Sun, Piet Habbel, Johannes Nowak, Zhongcong Xie, Leo L. Cheng, Yiying Zhang
Summary: This study presents the results of high-resolution magic angle spinning nuclear magnetic resonance studies of Alzheimer's disease (AD) and wild-type mouse models. The findings suggest that AD and wild-type mice can be differentiated based on brain metabolomics using HRMAS NMR, which could potentially be implemented in non-invasive evaluations.
Article
Multidisciplinary Sciences
E. D. Herbschleb, H. Kato, T. Makino, S. Yamasaki, N. Mizuochi
Summary: The authors demonstrate a non-adaptive algorithm to increase the sensing range while approaching the best sensitivity, outperforming the standard measurement concept in both sensitivity and range. They thoroughly explore this algorithm by simulation and discuss the T-2 scaling in the coherent regime, contrasting it with the T-1/2 of the standard measurement. This algorithm can be applied to any modulo-limited sensor.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Nicolas Staudenmaier, Simon Schmitt, Liam P. McGuinness, Fedor Jelezko
Summary: Classical sensors lack micro- or nanoscale spatial resolution for spectrum analysis, while quantum sensors, which have nanoscale precision, do not offer precise frequency resolution over a wide range of frequencies. By utilizing a single spin in diamond, a measurement protocol for quantum probes has been developed to achieve full signal reconstruction with nanoscale spatial resolution up to potentially 100 GHz.
Review
Chemistry, Multidisciplinary
Sahil Ahlawat, Kaustubh R. Mote, Nils-Alexander Lakomek, Vipin Agarwal
Summary: In the past two decades, solid-state nuclear magnetic resonance (ssNMR) spectroscopy has evolved from investigating small molecules and industrial polymers to decrypting complex biological systems. This transformation is due to improvements in hardware design, sample preparation, and sensitivity. This review discusses state-of-the-art ssNMR methods and recent developments in signal filtering, proton methodologies, and data acquisition speed in fast magic-angle spinning (MAS) systems.
Review
Chemistry, Multidisciplinary
Bernd Reif
Summary: This article summarizes the importance of proton detection in studying solid-state biomolecules over the past 20 years, and introduces labeling strategies and spectroscopic methods for experiments using perdeuterated samples to obtain quantitative information on structure and dynamics.
Article
Physics, Multidisciplinary
J. Cerrillo, S. Oviedo Casado, J. Prior
Summary: Conventional control strategies based on a two-level model for nitrogen-vacancy centers fail in weak bias magnetic fields or strong microwave pulses. A novel control sequence that addresses a hidden Raman configuration with microwave pulses tuned to the zero-field transition shows excellent performance in typical dynamical decoupling sequences. This opens up possibilities for nano-NMR operation in low field environments.
PHYSICAL REVIEW LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Ashlea R. Hughes, Frederic Blanc
Summary: Solid state nuclear magnetic resonance (NMR) spectroscopy plays a significant role in the field of supramolecular chemistry, offering unique insights into the atomic level structure and dynamics of guest molecules adsorbed in solid materials.
Article
Optics
David M. Lancaster, Ugne Dargyte, Sunil Upadhyay, Jonathan D. Weinstein
Summary: Ensemble measurements show that rubidium atoms trapped in solid parahydrogen are suitable for quantum sensing magnetic fields. Laser-induced fluorescence is used to search for single rubidium atom as a quantum sensor. Results indicate no fluorescence in solid parahydrogen and fluorescence in solid neon, with measurements of spectrum, excited-state lifetime, and bleaching effects.
Article
Chemistry, Physical
Hang Xiao, Zhengfeng Zhang, Jun Yang
Summary: This study analyzes the average Hamiltonian theory of SPR sequences and reveals the origin of frequency selectivity in recoupling. It demonstrates that frequency selectivity can be easily controlled by the flip angle, leading to either selective or broadband recoupling. The findings shed new light on the design of homonuclear recoupling sequences with arbitrary frequency bandwidths.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Pardis Sahafi, William Rose, Andrew Jordan, Ben Yager, Michele Pisciteli, Ram Budakian
Article
Chemistry, Multidisciplinary
Martin Friedl, Kris Cerveny, Chunyi Huang, Didem Dede, Mohammad Samani, Megan O. Hill, Nicholas Morgan, Wonjong Kim, Lucas Gueniat, Jaime Segura-Ruiz, Lincoln J. Lauhon, Dominik M. Zumbuehl, Anna Fontcuberta Morral
Article
Chemistry, Physical
Susanna Hammarberg, Vilgaile Dagyte, Lert Chayanun, Megan O. Hill, Alexander Wyke, Alexander Bjorling, Ulf Johansson, Sebastian Kalbfleisch, Magnus Heurlin, Lincoln J. Lauhon, Magnus T. Borgstrom, Jesper Wallentin
Article
Physics, Applied
Kuang-Chung Wang, Daniel Valencia, James Charles, Alex Henning, Megan E. Beck, Vinod K. Sangwan, Lincoln J. Lauhon, Mark C. Hersam, Tillmann Kubis
Summary: Research on van der Waals p-n heterojunctions has revealed anti-ambipolar behavior and gate tunability, with quantum transport modeling the interface physics and achieving qualitative agreement with experiments in terms of anti-ambipolar characteristics and Gaussian function tunability. Carrier recombination was found to determine the overall current density, with two gates controlling recombination by regulating the density of electrons in MoS2 and holes in black phosphorus at the heterojunction area.
APPLIED PHYSICS LETTERS
(2021)
Letter
Optics
Simone Bianconi, Lincoln J. Lauhon, Hooman Mohseni
Review
Chemistry, Multidisciplinary
Mohsen Rezaei, Simone Bianconi, Lincoln J. Lauhon, Hooman Mohseni
Summary: Photodetectors made from low-dimensional materials, such as quantum dots, nanowires, and two-dimensional materials, show great promise due to their high responsivities. However, it is important to note that maximizing internal gain may compromise detector performance at low light levels. The sensitivity of most low-dimensional photodetectors with internal gain is determined by junction capacitance, giving them advantages over bulk semiconductors in achieving high sensitivity.
Article
Multidisciplinary Sciences
Holger Haas, Sahand Tabatabaei, William Rose, Pardis Sahafi, Michele Piscitelli, Andrew Jordan, Pritam Priyadarsi, Namanish Singh, Ben Yager, Philip J. Poole, Dan Dalacu, Raffi Budakian
Summary: This article combines ultrasensitive force-based spin detection with high-fidelity spin control to achieve NMR diffraction measurement of millions of 31P spins in a nanowire. The experiments demonstrate subangstrom precision in detecting spatial modulation of spins and angstrom-scale displacement of the sample. The diffraction-based techniques extend the capabilities of NMR to the angstrom scale and show the potential of NMRd in probing nanocrystalline materials.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Multidisciplinary
Zhehao Zhu, Joon-Seok Kim, Michael J. Moody, Lincoln J. Lauhon
Summary: Inks based on two-dimensional materials are important for enhancing the performance of printed electronics. However, the variation in microstructure of the 2D channel material in printed thin-film transistors has limited the development of efficient empirical approaches for the exfoliation, sorting, and printing processes. To address this, a gate-dependent resistor network model was proposed to establish distinct microstructure-performance relationships. The model suggests that nanosheet edges, rather than intersheet resistance, limit transport in the 2D material network. Removing edge states can enable higher mobilities with thinner nanosheets, improving the performance of printed films.
Article
Chemistry, Multidisciplinary
Megan O. Hill, Paul Schmiedeke, Chunyi Huang, Siddharth Maddali, Xiaobing Hu, Stephan O. Hruszkewycz, Jonathan J. Finley, Gregor Koblmueller, Lincoln J. Lauhon
Summary: This study successfully correlates the morphology, strain, defects, and emission characteristics of quantum wells in nanowires under specific geometries using 3D Bragg coherent diffraction imaging technique, revealing the limits of elastic strain accommodation.
Article
Nanoscience & Nanotechnology
Christopher Mead, Chunyi Huang, Nebile Isik Goktas, Elisabetta Maria Fiordaliso, Ray R. LaPierre, Lincoln J. Lauhon
Summary: Controlling the distribution of dopants in nanowires is crucial for regulating their electronic properties. In this study, the spatial distribution of Be dopants in a GaAs nanowire with a twinning superlattice (TSL) was investigated. The results showed homogeneous dopant distributions in both the radial and axial directions, indicating a decoupling of the dopant distribution from the nanowire microstructure. Additionally, the analysis revealed that a small percentage of Be atoms occurred in substitutional-interstitial pairs, confirming theoretical predictions based on low defect formation energy.
Article
Chemistry, Multidisciplinary
Chunyi Huang, Didem Dede, Nicholas Morgan, Valerio Piazza, Xiaobing Hu, Anna Morral, Lincoln J. Lauhon
Summary: Selective area epitaxy is a promising method for defining nanowire networks in topological quantum computing. A strategy to promote Si dopant incorporation and suppress dopant diffusion in remote doped InGaAs nanowires templated by GaAs nanomembrane networks is reported. The growth of a dilute AlGaAs layer after doping the GaAs nanomembrane leads to the incorporation of Si, enabling precise control of the spacing between the Si donors and the undoped InGaAs channel; a simple model captures the influence of Al on the Si incorporation rate. Finite element modeling confirms the presence of high electron density in the channel.
Article
Nanoscience & Nanotechnology
Joon-Seok Kim, Sarah Carin Gavin, Nathaniel P. Stern, Lincoln J. Lauhon
Summary: This study demonstrates the nonvolatile modulation of light emission from excitons in monolayer MoS2 using ferroelectric polymer islands. The use of polarization enhances the emission intensity of both delocalized and defect-bound excitons, providing a simple method for electrically encoding and optically reading information. The identification of two distinct defect-bound exciton bands suggests the potential for developing electrically reconfigurable and optically accessible optical memory devices.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Michael J. Moody, Joshua T. Paul, Paul J. M. Smeets, Roberto dos Reis, Joon-Seok Kim, Christopher E. Mead, Jonathan Tyler Gish, Mark C. Hersam, Maria K. Y. Chan, Lincoln J. Lauhon
Summary: This study reports the successful epitaxial growth of tin monosulfide on hexagonal boron nitride, with lattice matching and no evidence of strain observed. The experiment also reveals superlubricity along the SnS/hBN interface and detects remnant polarization in SnS islands through differential phase contrast imaging. This research is of great significance for the development of electrically switchable ferroelectric semiconducting devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Alexander S. Chang, Bingjun Li, Sizhen Wang, Mohsen Nami, Paul J. M. Smeets, Jung Han, Lincoln J. Lauhon
Summary: Nonplanar GaN p-n junctions formed by selective area regrowth were studied using pulsed laser atom probe tomography. Results showed that Mg dopant concentration varies inversely with growth rate and negligible growth on vertical sidewalls, with high Mg concentration attributed to etching damage near regrowth interfaces. Further research is needed on growth conditions to reduce variations in growth rate and nonuniform doping in device fabrication processes.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jonah Teich, Ravit Dvir, Alex Henning, Eliran R. Hamo, Michael J. Moody, Titel Jurca, Hagai Cohen, Tobin J. Marks, Brian A. Rosen, Lincoln J. Lauhon, Ariel Ismach
