Integrating quantum hyperpolarisation in nuclear magnetic resonance systems

The membrane activity of the antimicrobial peptide caerin 1.1 is pH dependent.

Marc-Antoine Sani, Anton P Le Brun, Sunnia Rajput, Troy Attard, Frances Separovic

2023-03-21

Antimicrobial peptides are an important class of membrane-active peptides that can provide alternatives or complements to classic ..

Quantum microscopy with van der Waals heterostructures

AJ Healey, SC Scholten, T Yang, JA Scott, GJ Abrahams, IO Robertson, XF Hou, YF Guo, S Rahman, Y Lu, M Kianinia, I Aharonovich, J-P Tetienne

2022-11-07

Solid-state spin sensors have the capacity to act as quantum microscopes for probing material properties and physical processes. H..

Varied Magnetic Phases in a van der Waals Easy-Plane Antiferromagnet Revealed by Nitrogen-Vacancy Center Microscopy

Alexander J Healey, Sharidya Rahman, Sam C Scholten, Islay O Robertson, Gabriel J Abrahams, Nikolai Dontschuk, Boqing Liu, Lloyd CL Hollenberg, Yuerui Lu, Jean-Philippe Tetienne

2022-07-22

Interest in van der Waals materials often stems from a desire to miniaturize existing technologies by exploiting their intrinsic l..

Imaging Current Paths in Silicon Photovoltaic Devices with a Quantum Diamond Microscope

SC Scholten, GJ Abrahams, BC Johnson, AJ Healey, IO Robertson, DA Simpson, A Stacey, S Onoda, T Ohshima, TC Kho, J Ibarra Michel, J Bullock, LCL Hollenberg, J-P Tetienne

2022-07-18

Magnetic imaging with nitrogen-vacancy centers in diamond, also known as quantum diamond microscopy, has emerged as a useful techn..

In-cell DNP NMR reveals multiple targeting effect of antimicrobial peptide.

Frances Separovic, Vinzenz Hofferek, Anthony P Duff, Malcom J McConville, Marc-Antoine Sani

2022-01-01

Dynamic nuclear polarization NMR spectroscopy was used to investigate the effect of the antimicrobial peptide (AMP) maculatin 1.1 ..

An integrated widefield probe for practical diamond nitrogen-vacancy microscopy

GJ Abrahams, SC Scholten, AJ Healey, IO Robertson, N Dontschuk, SQ Lim, BC Johnson, DA Simpson, LCL Hollenberg, J-P Tetienne

2021-12-20

The widefield diamond nitrogen-vacancy (NV) microscope is a powerful instrument for imaging magnetic fields. However, a key limita..

TOAC spin-labeled peptides tailored for DNP-NMR studies in lipid membrane environments

Shiying Zhu, Ehsan Kachooei, Jeffrey R Harmer, Louise J Brown, Frances Separovic, Marc-Antoine Sani

2021-10-19

The benefit of combining in-cell solid-state dynamic nuclear polarization (DNP) NMR and cryogenic temperatures is providing suffic..

Advances in the Surface Functionalization of Nanodiamonds for Biological Applications: A Review

Mina Barzegar Amiri Olia, Paul S Donnelly, Lloyd CL Hollenberg, Paul Mulvaney, David A Simpson

2021-10-04

Nanodiamonds (NDs) represent an emerging class of nanomaterials that have been used for a variety of applications including biosen..

Utilizing magnetic resonance techniques to study membrane interactions of amyloid peptides

Sunnia Rajput, Marc-Antoine Sani, David W Keizer, Frances Separovic

2021-06-01

Alzheimer's disease (AD) is a common neurodegenerative condition that involves the extracellular accumulation of amyloid plaques p..

Polarization Transfer to External Nuclear Spins Using Ensembles of Nitrogen-Vacancy Centers

AJ Healey, LT Hall, GAL White, T Teraji, M-A Sani, F Separovic, J-P Tetienne, LCL Hollenberg

2021-05-24

The nitrogen-vacancy (N-V) center in diamond has emerged as a candidate to noninvasively hyperpolarize nuclear spins in molecular ..

C-terminus amidation influences biological activity and membrane interaction of maculatin 1.1

Shiying Zhu, Wenyi Li, Neil O'Brien-Simpson, Frances Separovic, Marc-Antoine Sani

2021-04-23

Cationic antimicrobial peptides have been investigated for their potential use in combating infections by targeting the cell membr..

Expression and purification of the native C-amidated antimicrobial peptide maculatin 1.1

Shiying Zhu, Daniel K Weber, Frances Separovic, Marc-Antoine Sani

2021-04-11

Maculatin 1.1 (Mac1) is an antimicrobial peptide (AMP) from an Australian tree frog and exhibits low micromolar activity against G..

Prospects for nuclear spin hyperpolarization of molecular samples using nitrogen-vacancy centers in diamond

J-P Tetienne, LT Hall, AJ Healey, GAL White, M-A Sani, F Separovic, LCL Hollenberg

2021-01-21

After initial proof-of-principle demonstrations, optically pumped nitrogen-vacancy (NV) centers in diamond have been proposed as a..

Comparison of different methods of nitrogen-vacancy layer formation in diamond for wide-field quantum microscopy

AJ Healey, A Stacey, BC Johnson, DA Broadway, T Teraji, DA Simpson, J-P Tetienne, LCL Hollenberg

2020-10-29

Thin layers of near-surface nitrogen-vacancy (NV) defects in diamond substrates are the workhorse of NV-based wide-field magnetic ..

Imaging Domain Reversal in an Ultrathin Van der Waals Ferromagnet

David A Broadway, Sam C Scholten, Cheng Tan, Nikolai Dontschuk, Scott E Lillie, Brett C Johnson, Guolin Zheng, Zhenhai Wang, Artem R Oganov, Shangjie Tian, Chenghe Li, Hechang Lei, Lan Wang, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2020-10-01

The recent isolation of 2D van der Waals magnetic materials has uncovered rich physics that often differs from the magnetic behavi..

Improved Current Density and Magnetization Reconstruction Through Vector Magnetic Field Measurements

DA Broadway, SE Lillie, SC Scholten, D Rohner, N Dontschuk, P Maletinsky, J-P Tetienne, LCL Hollenberg

2020-08-26

Stray magnetic fields contain significant information about the electronic and magnetic properties of condensed matter systems. Fo..

Laser Modulation of Superconductivity in a Cryogenic Wide-field Nitrogen-Vacancy Microscope.

Scott E Lillie, David A Broadway, Nikolai Dontschuk, Sam C Scholten, Brett C Johnson, Sebastian Wolf, Stephan Rachel, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2020-03-11

We realize a cryogenic wide-field nitrogen-vacancy microscope and use it to image Abrikosov vortices and transport currents in a s..