Luke R. Johnson

ORCID: 0000-0002-5088-1788
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About
Contact & Profiles
Research Areas
  • Memory and Neural Mechanisms
  • Stress Responses and Cortisol
  • Neuroscience and Neuropharmacology Research
  • Neuroendocrine regulation and behavior
  • Receptor Mechanisms and Signaling
  • Hormonal Regulation and Hypertension
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Neurotransmitter Receptor Influence on Behavior
  • Posttraumatic Stress Disorder Research
  • Adrenal Hormones and Disorders
  • Estrogen and related hormone effects
  • Advanced Photocatalysis Techniques
  • MXene and MAX Phase Materials
  • COVID-19 Clinical Research Studies
  • Nicotinic Acetylcholine Receptors Study
  • Anesthesia and Neurotoxicity Research
  • Neural dynamics and brain function
  • Long-Term Effects of COVID-19
  • Electrocatalysts for Energy Conversion
  • Cannabis and Cannabinoid Research
  • Sleep and Wakefulness Research
  • SARS-CoV-2 and COVID-19 Research
  • Resilience and Mental Health
  • Hormonal and reproductive studies
  • Hearing, Cochlea, Tinnitus, Genetics

University of Tasmania
2019-2024

The University of Queensland
2019-2024

University of Louisville
2024

nView Medical (United States)
2024

Uniformed Services University of the Health Sciences
2012-2023

Anoka-Ramsey Community College
2023

Gallipoli Medical Research Foundation
2023

Greenslopes Private Hospital
2023

St. Norbert College
2023

Queensland University of Technology
2013-2022

Hydrogen evolution reaction (HER) via electrocatalysis is one method of enabling sustainable production molecular hydrogen as a clean and promising energy carrier. Previous theoretical experimental results have shown that some two-dimensional (2D) transition metal carbides (MXenes) can be effective electrocatalysts for the HER, based on assumption they are functionalized entirely with oxygen or hydroxyl groups basal plane. However, it known MXenes contain other plane functionalities, e.g.,...

10.1021/acsaem.7b00054 article EN ACS Applied Energy Materials 2017-12-20

The development of highly efficient and durable earth-abundant hydrogen evolution reaction (HER) catalysts is crucial for the extensive implementation economy. Members 2D MXenes family, particularly Mo2CTx, have recently been identified as promising HER catalysts. However, their inherent oxidative instability in air aqueous electrolyte solutions hindering widespread use. Herein, we present a simple scalable method to circumvent adventitious oxidation Mo2CTx via situ sulfidation form...

10.1021/acsnano.0c08671 article EN ACS Nano 2020-11-13

We use density functional theory calculations to study a group of 2D materials known as MXenes toward the electrochemical nitrogen reduction reaction (NRR) ammonia. So far, all computational studies have only considered NRR chemistry on unfunctionalized (bare) MXenes. In this study, we investigate total 65 bare and functionalized establish free energy diagrams for basal planes 55 different M2XTx (M = Ti, V, Zr, Nb, Mo, Ta, W; X C, N) span large variety possible chemistries. Energy trends...

10.1021/acscatal.9b01925 article EN ACS Catalysis 2019-11-20

Hydrogen evolution reaction (HER) is vital for sustainable energy production and plays a key role in achieving hydrogen economy. Herein, density functional theory calculations are used to screen suitable HER catalysts among 24 two-dimensional double transition-metal (TM) carbide MXenes (chemical composition M2′M″C2Tx M2′M2″C3Tx; M′ M″ two different metals, = Cr, V, Ti, or Nb; Nb, Ta, V; T O and/or OH) determine their thermodynamic stability under HER-relevant conditions. The established...

10.1021/acs.jpcc.0c01460 article EN The Journal of Physical Chemistry C 2020-04-21

In the brain, membrane associated nongenomic steroid receptors can induce fast-acting responses to ion conductance and second messenger systems of neurons. Emerging data suggest that glucocorticoid mineralocorticoid may directly regulate synaptic excitability during times stress when adrenal hormones are elevated. As key neuron signaling interface, synapse is involved in learning memory, including traumatic memories stress. The lateral amygdala a site for plasticity underlying conditioned...

10.1371/journal.pone.0014344 article EN cc-by PLoS ONE 2010-12-15

OPINION article Front. Behav. Neurosci., 27 July 2011Sec. Individual and Social Behaviors volume 5 - 2011 | https://doi.org/10.3389/fnbeh.2011.00038

10.3389/fnbeh.2011.00038 article EN cc-by Frontiers in Behavioral Neuroscience 2011-01-01

ORIGINAL RESEARCH article Front. Behav. Neurosci., 23 May 2011Sec. Learning and Memory volume 5 - 2011 | https://doi.org/10.3389/fnbeh.2011.00023

10.3389/fnbeh.2011.00023 article EN cc-by Frontiers in Behavioral Neuroscience 2011-01-01

The addiction potential of anabolic steroids remains largely unexplored. Here, we demonstrate voluntary oral testosterone intake in hamsters. Using a 2-bottle choice test, males preferred an aqueous solution 200 µg/ml over vehicle. However, the taste is not highly preferred. Addition at 400 increased fluid consumption from nonpreferred bottle but cholesterol same concentration reduced drinking, suggesting that reward common to all sterols. With food-induced maintained when food was...

10.1159/000054645 article EN Neuroendocrinology 2001-01-01

Contextual fear conditioning is a Pavlovian paradigm capable of rapidly creating memories to contexts, such as rooms or chambers. protocols have long been utilised evaluate how are consolidated, maintained, expressed, recalled and extinguished within the brain. These studies identified lateral portion amygdala dorsal hippocampus essential for contextual memory consolidation. The current study was designed two different alter microglia, brain derived neurotrophic factor (BDNF), phosphorylated...

10.3389/fncel.2019.00214 article EN cc-by Frontiers in Cellular Neuroscience 2019-05-14
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