John Cavin

First‐Principles Models of Triboelectrification

Giulio Fatti, John Cavin, Hyunseok Ko, Rohan Mishra et autres

Triboelectrification has been known for millennia and remains of great practical importance, with applications spanning pharmaceuticals, electronics, industrial processes, and especially energy harvesting. Its inherent complexity, however, has long hindered a definitive understanding. In recent years, the advent of triboelectric nanogenerators (TENGs) …

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Unveiling the Shortwave Absorption Spectra of Alumina Aerosols: Implications for Solar Radiation Modification

Taveen Singh Kapoor, Prabhav Upadhyay, Jian Huang, Guodong Ren et autres

Alumina is proposed for Stratospheric Aerosol Injection (SAI)-based solar radiation modification due to its presumed ability to scatter sunlight strongly while absorbing weakly. Alumina is assigned negligible solar shortwave absorption in climate models; this assumption is not validated owing to technological challenges …

SymPlex plots for visualizing properties in high-dimensional alloy spaces

John Cavin, Pravan Omprakash, Adrien Couet, Rohan Mishra

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Chemistry and Interfacial Structure Promoting Quasi-van der Waals Epitaxial Growth of WS2 Nanosheets on Sapphire for Prospective Application in Field-Effect Transistors

Supriyo Majumder, Nitin Babu Shinde, John Cavin, Chen Chen et autres

How do chemical and structural modifications to the supporting crystal surface affect the subsequent van der Waals (vdW) or quasi(Q)-vdW epitaxial growth of 2D nanocrystals? Developing an atomic-scale picture of such an interfacial system is crucial for understanding its impact on the …

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Symplex Plots for Visualizing Properties in High-Dimensional Alloy Spaces

John Cavin, Pravan Omprakash, Adrien Couet, Rohan Mishra

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Chemistry and Interfacial Structure Promoting Quasi-van der Waals Epitaxial Growth of WS$_2$ Nanosheets on Sapphire for Prospective Application in Field-Effect Transistors

Supriyo Majumder, Nitin Babu Shinde, John Cavin, 陈晨 et autres

How do chemical and structural modifications to the supporting crystal surface affect the subsequent van der Waals (vdW) or quasi(Q)-vdW epitaxial growth of 2D nanocrystals? Developing an atomic-scale picture of such an interfacial system is crucial for understanding its impact on the …

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Flexible Nanogenerators Based on Enhanced Flexoelectricity in Mn3O4 Membranes

Chinmayee Chowde Gowda, John Cavin, Partha Kumbhakar, Chandra Sekhar Tiwary et autres

Abstract Atomically thin, few‐layered membranes of oxides show unique physical and chemical properties compared to their bulk forms. Manganese oxide (Mn3O4) membranes are exfoliated from the naturally occurring mineral Hausmannite and used to make flexible, high‐performance nanogenerators (NGs). An enhanced power density …

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Flexible Nanogenerators based on Enhanced Flexoelectricity in Mn3O4 Membranes

Chinmayee Chowde Gowda, John Cavin, Partha Kumbhakar, Chandra Sekhar Tiwary et autres

Atomically thin, few-layered membranes of oxides show unique physical and chemical properties compared to their bulk forms. We have exfoliated manganese oxide (Mn3O4) membranes from the naturally occurring mineral Hausmannite and used them to make flexible, high-performance nanogenerators. We observe an enhanced …

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Colossal Optical Anisotropy from Atomic‐Scale Modulations

Hongyan Mei, Guodong Ren, Boyang Zhao, Jad Salman et autres

Abstract Materials with large birefringence (Δn, where n is the refractive index) are sought after for polarization control (e.g., in wave plates, polarizing beam splitters, etc.), nonlinear optics, micromanipulation, and as a platform for unconventional light–matter coupling, such as hyperbolic phonon polaritons. …

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Solution Combustion Synthesis and Characterization of Magnesium Copper Vanadates

Abhishek Rawat, Laura Clark, Chuzhong Zhang, John Cavin et autres

High Resolution Image Download MS PowerPoint Slide Magnesium vanadate (MgV 2 O 6 ) and its alloys with copper vanadate were synthesized via the solution combustion technique. Phase purity and solid solution formation were confirmed by a variety of experimental techniques, supported …

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Tungsten Oxide Mediated Quasi-van der Waals Epitaxy of WS2 on Sapphire

Assael Cohen, Pranab Kishore Mohapatra, Simón Hettler, Avinash Patsha et autres

High Resolution Image Download MS PowerPoint Slide Conventional epitaxy plays a crucial role in current state-of-the art semiconductor technology, as it provides a path for accurate control at the atomic scale of thin films and nanostructures, to be used as the building …

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Colossal optical anisotropy from atomic-scale modulations

Hongyan Mei, Guodong Ren, Boyang Zhao, Jad Salman et autres

In modern optics, materials with large birefringence (Δn, where n is the refractive index) are sought after for polarization control (e.g. in wave plates, polarizing beam splitters, etc.), nonlinear optics and quantum optics (e.g. for phase matching and production of entangled photons), …