Search Results - "Ward, Rachael"
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Polarity governs atomic interaction through two-dimensional materials
Published in Nature materials (01-11-2018)“…The transparency of two-dimensional (2D) materials to intermolecular interactions of crystalline materials has been an unresolved topic. Here we report that…”
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2
Epitaxial graphene quantum dots for high-performance terahertz bolometers
Published in Nature nanotechnology (01-04-2016)“…Bolometers with high responsivity and low electrical noise can be fabricated exploiting the conductance gap induced in graphene quantum dots by quantum…”
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3
Sensitive room-temperature terahertz detection via the photothermoelectric effect in graphene
Published in Nature nanotechnology (01-10-2014)“…Hot-electron effects in graphene can be used to detect terahertz radiation at room temperature with high sensitivity, low noise-equivalent power and a fast…”
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4
Tunable Terahertz Hybrid Metal–Graphene Plasmons
Published in Nano letters (14-10-2015)“…We report here a new type of plasmon resonance that occurs when graphene is connected to a metal. These new plasmon modes offer the potential to incorporate a…”
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5
Plasmon-Enhanced Terahertz Photodetection in Graphene
Published in Nano letters (08-07-2015)“…We report a large area terahertz detector utilizing a tunable plasmonic resonance in subwavelength graphene microribbons on SiC(0001) to increase the…”
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Graphene Buffer Layer on SiC as a Release Layer for High-Quality Freestanding Semiconductor Membranes
Published in Nano letters (12-05-2021)“…Free-standing crystalline membranes are highly desirable owing to recent developments in heterogeneous integration of dissimilar materials. Van der Waals (vdW)…”
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7
Nanoscale mapping of quasiparticle band alignment
Published in Nature communications (23-07-2019)“…Control of atomic-scale interfaces between materials with distinct electronic structures is crucial for the design and fabrication of most electronic devices…”
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Freestanding n‑Doped Graphene via Intercalation of Calcium and Magnesium into the Buffer Layer–SiC(0001) Interface
Published in Chemistry of materials (11-08-2020)“…The intercalation of epitaxial graphene on SiC(0001) with Ca has been studied extensively, yet precisely where the Ca resides remains elusive. Furthermore, the…”
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9
Dermatologist Practical Guide to Encouraging Photoprotection in Skin of Color Patients
Published in Journal of drugs in dermatology (01-07-2023)Get more information
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10
Detrital Input Sustains Diatom Production off a Glaciated Arctic Coast
Published in Geophysical research letters (28-06-2024)“…In the Arctic and subarctic oceans, the relatively low supply of silicon (compared to other nutrients) can make it limiting for the growth of diatoms, a…”
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11
Strong transient magnetic fields induced by THz-driven plasmons in graphene disks
Published in Nature communications (18-11-2023)“…Strong circularly polarized excitation opens up the possibility to generate and control effective magnetic fields in solid state systems, e.g., via the optical…”
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Modifications of Epitaxial Graphene on SiC for the Electrochemical Detection and Identification of Heavy Metal Salts in Seawater
Published in Sensors (Basel, Switzerland) (19-07-2022)“…The electrochemical detection of heavy metal ions is reported using an inexpensive portable in-house built potentiostat and epitaxial graphene. Monolayer,…”
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13
Arrays of Si vacancies in 4H-SiC produced by focused Li ion beam implantation
Published in Scientific reports (11-02-2021)“…Point defects in SiC are an attractive platform for quantum information and sensing applications because they provide relatively long spin coherence times,…”
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14
Charged Impurity Scattering and Electron–Electron Interactions in Large-Area Hydrogen Intercalated Bilayer Graphene
Published in ACS applied materials & interfaces (06-11-2024)“…Intercalation is a promising technique to modify the structural and electronic properties of 2D materials on the wafer scale for future electronic device…”
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15
Correlating Raman Spectral Signatures with Carrier Mobility in Epitaxial Graphene: A Guide to Achieving High Mobility on the Wafer Scale
Published in Nano letters (12-08-2009)“…We report a direct correlation between carrier mobility and Raman topography of epitaxial graphene (EG) grown on silicon carbide (SiC). We show the Hall…”
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16
Electrical and Low Frequency Noise Characterization of Graphene Chemical Sensor Devices Having Different Geometries
Published in Sensors (Basel, Switzerland) (04-02-2022)“…Chemiresistive graphene sensors are promising for chemical sensing applications due to their simple device structure, high sensitivity, potential for…”
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17
Quantum Linear Magnetoresistance in Multilayer Epitaxial Graphene
Published in Nano letters (13-10-2010)“…We report the first observation of linear magnetoresistance (LMR) in multilayer epitaxial graphene grown on SiC. We show that multilayer epitaxial graphene…”
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18
Effect of defect-induced cooling on graphene hot-electron bolometers
Published in Carbon (New York) (01-12-2019)“…At high phonon temperature, defect-mediated electron-phonon collisions (supercollisions) in graphene allow for larger energy transfer and faster cooling of hot…”
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Technique for the Dry Transfer of Epitaxial Graphene onto Arbitrary Substrates
Published in ACS nano (23-02-2010)“…To make graphene technologically viable, the transfer of graphene films to substrates appropriate for specific applications is required. We demonstrate the dry…”
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Multilayer Epitaxial Graphene on Silicon Carbide: A Stable Working Electrode for Seawater Samples Spiked with Environmental Contaminants
Published in Sensors (Basel, Switzerland) (18-07-2020)“…The electrochemical response of multilayer epitaxial graphene electrodes on silicon carbide substrates was studied for use as an electrochemical sensor for…”
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