51 citations · 261 across the 23 of their papers we have counts for
23 papers
Reduced-Order Model to Predict Thermal Conductivity of Dimensionally-Confined Materials
S. Aria Hosseini, Alex Greaney, Giuseppe Romano
Predicting nanoscale thermal transport in dielectrics requires models, such as the Boltzmann transport equation (BTE), that account for phonon boundary scattering in structures wit…
Mode- and Space- Resolved Thermal Transport of Alloy Nanostructures
S. Aria Hosseini, Sarah Khanniche, G. Jeffrey Snyder +3
Nanostructured semiconducting alloys obtain ultra-low thermal conductivity as a result of the scattering of phonons with a wide range of mean-free-paths (MFPs). In these materials,…
Inverse Design in Nanoscale Heat Transport via Interpolating Interfacial Phonon Transmission
Giuseppe Romano, Steven G. Johnson
We introduce a methodology for density-based topology optimization of non-Fourier thermal transport in nanostructures, based upon adjoint-based sensitivity analysis of the phonon B…
OpenBTE: a Solver for ab-initio Phonon Transport in Multidimensional Structures
Giuseppe Romano
Controlling heat flow at the nanoscales is pivotal to several applications, including thermal energy harvesting and heat management. However, engineering nanostructures is challeng…
Efficient calculations of the Mode-Resolved ab-initio thermal Conductivity in nanostructures
Giuseppe Romano
First-principles calculations of thermal transport in homogeneous materials have reached remarkable predicting power. Modeling deterministically phonon transport in nanostructures,…
Universal Effective Medium Theory to Predict the Thermal Conductivity in Nanostructured Materials
S. Aria Hosseini, Sarah Khanniche, P. Alex Greaney +1
Nanostructured materials enable high thermal transport tunability, holding promises for thermal management and heat harvesting applications. Predicting the effect that nanostructur…
dPV: An End-to-End Differentiable Solar-Cell Simulator
Sean Mann, Eric Fadel, Samuel S. Schoenholz +3
We introduce dPV, an end-to-end differentiable photovoltaic (PV) cell simulator based on the drift-diffusion model and Beer-Lambert law for optical absorption. dPV is programmed in…
Enhanced Thermoelectric Performance of Polycrystalline Si0.8Ge0.2 Alloys through the Addition of Nanoscale Porosity
Hosseini, S. Aria, Romano +3
Engineering materials to include nanoscale porosity or other nanoscale structures has become a well-established strategy for enhancing the thermoelectric performance of dielectrics…
Quantum multifractality in thermal conduction across random interfaces
Taishan Zhu, Giuseppe Romano, Lina Yang +2
Self-affine morphology of random interfaces governs their functionalities across tribological, geological, (opto-)electrical and biological applications. However, the knowledge of…
Mitigating the Effect of Nanoscale Porosity on Thermoelectric Power Factor of Si
S. Aria Hosseini, Giuseppe Romano, P. Alex Greaney
The addition of porosity to thermoelectric materials can significantly increase the figure of merit, ZT, by reducing the thermal conductivity. Unfortunately, porosity is also detri…
Phonon Transport in Patterned Two-Dimensional Materials from First Principles
Giuseppe Romano
Phonon size effects induce ballistic transport in nanomaterials, challenging Fourier's law. Nondiffusive heat transport is captured by the Peierls-Boltzmann transport equation (BTE…
Thermal transport in nanoporous holey silicon membranes investigated with optically-induced transient thermal gratings
Ryan A. Duncan, Giuseppe Romano, Marianna Sledzinska +5
In this study, we use the transient thermal grating optical technique \textemdash a non-contact, laser-based thermal metrology technique with intrinsically high accuracy \textemdas…
Bayesim: a tool for adaptive grid model fitting with Bayesian inference
Rachel C. Kurchin, Giuseppe Romano, Tonio Buonassisi
Bayesian inference is a widely used and powerful analytical technique in fields such as astronomy and particle physics but has historically been underutilized in some other discipl…
High-Throughput Calculations of Thermal Conductivity in Nanoporous Materials: The Case of Half-Heusler Compounds
Giuseppe Romano, Jesús Carrete, Alexie M. Kolpak +1
Achieving low thermal conductivity and good electrical properties is a crucial condition for thermal energy harvesting materials. Nanostructuring offers a very powerful tool to add…
Diffusive Phonons in Nongray Nanostructures
Giuseppe Romano, Alexie M. Kolpak
Nanostructured semiconducting materials are promising candidates for thermoelectrics due to their potential to suppress phonon transport while preserving electrical properties. Mod…
Phonon Bottleneck Identification in Disordered Nanoporous Materials
Giuseppe Romano, Jeffrey C. Grossman
Nanoporous materials are a promising platform for thermoelectrics in that they offer high thermal conductivity tunability while preserving good electrical properties, a crucial req…
Thermal Anisotropy Enhanced by Phonon Size Effects in Nanoporous Materials
Giuseppe Romano, Alexie M. Kolpak
While thermal anisotropicity is a desirable materials property for many applications, including transverse thermoelectrics and thermal management in electronic devices, it remains…
Directional Phonon Suppression Function as a Tool for the Identification of Ultralow Thermal Conductivity Materials
Giuseppe Romano, Alexie M. Kolpak
Boundary-engineering in nanostructures has the potential to dramatically impact the development of materials for high-efficiency conversion of thermal energy directly into electric…
Single-molecule Electronics: Cooling Individual Vibrational Modes by the Tunneling Current
Jacob Lykkebo, Giuseppe Romano, Alessio Gagliardi +2
Electronic devices composed of single molecules constitute the ultimate limit in the continued downscaling of electronic components. A key challenge for single-molecule electronics…
Simulating nanoscale heat transport
Giuseppe Romano, Jean-Philippe Peraud, Jeffrey C. Grossman
In this book chapter we provide the definition of "Simulating Nanoscale Heat Transport", broadly regarded as modeling heat conduction beyond Fourier's law. We primarely focus on in…
Temperature-dependent thermal conductivity in nanoporous materials studied by the Boltzmann Transport Equation
Giuseppe Romano, Keivan Esfarjani, David A. Strubbe +2
Nanostructured materials exhibit low thermal conductivity because of the additional scattering due to phonon-boundary interactions. As these interactions are highly sensitive to th…
Toward phonon-boundary engineering in nanoporous materials
Giuseppe Romano, Jeffrey C. Grossman
Tuning thermal transport in nanostructured materials is a powerful approach to develop high-efficiency thermoelectric materials. Using a recently developed approach based on the ph…
Multiscale Phonon Conduction in Nanostructured Materials Predicted by Bulk Thermal Conductivity Accumulation Function
Giuseppe Romano, Jeffrey C. Grossman
We develop a computational framework, based on the Boltzmann transport equation, with the ability to compute the thermal transport in nanostructured materials of any geometry using…