National Laboratory of the Rockies

Time-of-Flight Secondary Ion Mass Spectrometry for Characterization of Ir-Based Catalysts for PEM Water Electrolyzers

Abstract Iridium-based catalysts remain essential for enabling durable oxygen evolution in proton-exchange membrane water electrolyzers (PEMWEs), yet their surface and subsurface chemistries remain insufficiently resolved by conventional characterization methods. Here, we establi...

The HRRR Meteorology, Energy, and Transmission (MET) Toolkit: advancing high-resolution atmospheric data for contiguous US energy applications

Abstract. High-quality, multiyear atmospheric data are foundational for power system planning and grid integration. While the legacy Wind Integration National Dataset (WIND) Toolkit has long served as the industry standard, its historical record ends in 2013, leaving a critical g...

Spatial and economic prioritization for distributed wind

Abstract. This study investigates how distributed wind (DW) energy could be strategically deployed in areas with elevated energy burdens by analyzing spatial, economic, and demographic factors. We use a set of metrics that incorporate residential and macroeconomic variables, incl...

AMReX-Codes/pyamrex: 26.10

Dependencies AMReX: 26.10 pybind11: 3.0.4 Python: 3.11 - 3.14 What's Changed Fix Sphinx Stubs & Autogen by @ax3l in https://github.com/AMReX-Codes/pyamrex/pull/618 PODVector from_array by @ax3l in https://github.com/AMReX-Codes/pyamrex/pull/580 Release: pyAMReX 26.10 by @EZoni in...

Conformal oxides decouple chemical stability and energetics at NiO x /perovskite interfaces

Nickel oxide (NiO x ) is a common hole transport layer (HTL) in perovskite photovoltaics, but the chemical reactivity of NiOx surfaces accelerates degradation when contacting perovskites. We developed an ultrathin, conformal tin oxide (SnO x ) interlayer to suppress interfacial r...

Impact of Data Temporal Resolution on the Energy Yield Modeling of Tandem Photovoltaic Devices

Full physics‐based equivalent circuit models for tandem photovoltaic (PV) devices provide high accuracy but are computationally intensive. This study investigates reducing simulation runtime by downsampling meteorological input data using three methods—mean, median, and slicing—a...

Industrial thermal energy supply options: A multifactor evaluation framework

Industrial heat production represents approximately 50% of U.S. manufacturing sector energy needs and related emissions, yet emission reduction strategies for this sector remain underexplored relative to power and transportation. This study applies the open-source LiAISON (Life c...

Proteomics and characterization of lignocellulosic carbohydrate utilization for Thermoanaerobacterium thermosaccharolyticum reveals two thermophilic Gram-positive polysaccharide utilization loci

Saccharolytic bacteria are of increasing interest due to their importance in human health and the environment. In particular, their abilities to utilize diverse plant polysaccharides make them attractive candidate organisms for production of lignocellulosic biofuels. Thermoanaero...

Multi-season evaluation of temperature and wind in the marine boundary layer along the United States northeast coast in the High-Resolution Rapid Refresh model

The High-Resolution Rapid Refresh (HRRR) model is run operationally by the National Oceanic and Atmospheric Administration to provide high-resolution short-range forecasts for the continental United States. The evaluation of the HRRR model off of the United States coasts has been...

Chirality-induced magnetoresistance in hybrid organic-inorganic perovskite semiconductors

The combination of semiconducting properties and synthetically tunable chirality in chiral metal halide semiconductors (CMHSs) offers a compelling platform for room temperature control of electronic spin properties, leveraging effects such as chirality-induced spin selectivity (C...

Detailed experimental investigation of the aerodynamics and blade/tower interaction of a 1.5 MW wind turbine in a downwind configuration

Abstract. We present a detailed experimental investigation of the flow details of the blade/tower interaction on a 1.5 MW wind turbine operated in a downwind configuration. The study aims to address claims of shortcomings in the downwind turbine concept, such as impulsive blade l...

Explainable Binary Classification of Separable Shape Ensembles

Abstract Scientists, engineers, biologists, and technology specialists universally leverage image segmentation to extract shape ensembles containing many thousands of curves representing patterns in observations and measurements. These large curve ensembles facilitate statistical...

The AWAKEN wind farm benchmark – Part 2: Modeling results

Abstract. Accurately modeling wind farm performance in complex atmospheric flows remains a challenge. This paper presents the modeling results of the American WAKE experimeNt (AWAKEN) wind farm benchmark, a collaborative effort involving 16 research groups from academia and indus...

Evaluating interactive effects of the Conservation Reserve Program and wind energy infrastructure on grassland bird abundance in the United States

Abstract The extent of grasslands has contracted globally, leading to significant declines in grassland-obligate species, including birds. Grassland birds are threatened by multiple factors, including grassland conversion to cropland, and development, including energy infrastruct...

Bulk degradation of P-, Sb- and As-doped Cz Si wafers and TOPCon cells due to light and elevated temperature

We assessed light- and elevated-temperature induced degradation (LeTID) in n -type Czochralski (Cz) Si wafers, and industrial tunnel oxide passivating contact (TOPCon) Si solar cells processed with and without the laser-enhanced contact optimization (LECO). A recovery pre-treatme...