Results 151 to 160 of about 352,526 (305)

Scalable, Bottom‐Up Synthesis of Transition Metal–Doped Quantum Confined, 1D Titanate‐Based Lepidocrocite Nanofilaments, Their Electronic Structures and Oxygen Evolution Reactivity

Advanced Materials Interfaces, EarlyView.
Quantum‐confined lepidocrocite titanate nanofilaments are doped, bottom‐up, with Mn+2, Fe+2, Co+2, Ni+2, and Cu+2 to tune electronic structure and catalysis. Doping narrows the bandgap—by up to ∼0.8 eV—and extends visible absorption. Ni‐doped filaments accelerate oxygen evolution (319 mV at 10 mA cm−2) and TM‐doped samples rapidly degrade rhodamine 6G (
Mohamed A. Ibrahim, Devraj Singh, Aidan McMoil, Mary Qin Hassig, Raja Janani, Joshua D. Snyder, Michel W. Barsoum   +6 more
wiley   +1 more source

In-flight rain damage tests of the shuttle thermal protection system [PDF]

NASA conducted in-flight rain damage tests of the Shuttle thermal protection system (TPS). Most of the tests were conducted on an F-104 aircraft at the Dryden Flight Research Facility of NASA's Ames Research Center, although some tests were conducted by ...
Barneburg, Jack, Meyer, Robert R., Jr.
core   +1 more source

Combinatorial Screening for Europium Induced Defect Engineering in Titania Anodic Memristors

Advanced Materials Interfaces, EarlyView.
A Ti‐Eu thin‐film combinatorial libary (3‐17 at.% Eu) was fabricated by co‐sputtering and anodisation. Systematic screening revealed forming‐free memristors with analog switching, with compositions between 7‐17 at.% Eu showing improved endurance and multilevel resistive states.
Elena Atanasova, Andreas Greul, Ioan Mihail Ghitiu, Nicu Scarisoreanu, Achim Walter Hassel, Andrei Ionut Mardare   +5 more
wiley   +1 more source

Assessment of analytical and experimental techniques utilized in conducting plume technology tests 575 and 593 [PDF]

Since exhaust plumes affect vehicle base environment (pressure and heat loads) and the orbiter vehicle aerodynamic control surface effectiveness, an intensive program involving detailed analytical and experimental investigations of the exhaust plume ...
Baker, L. R., Penny, M. M., Sulyma, P. R., Tevepaugh, J. A.   +3 more
core   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Experiments in a three-dimensional adaptive-wall wind tunnel [PDF]

Three dimensional adaptive-wall experiments were performed in the Ames Research Center (ARC) 25- by 13-cm indraft wind tunnel. A semispan wing model was mounted to one sidewall of a test section with solid sidewalls, and slotted top and bottom walls. The
Schairer, E. T.
core   +1 more source

Multi‐Material Gradient Printing Using Meniscus‐enabled Projection Stereolithography (MAPS)

Advanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
MAPS is a new vat‐free printing technique that utilizes programmed delivery of resin droplets with custom formulations to enable multi‐material gradient printing of 3D structures with user‐defined variations in mechanical stiffness, opacity, surface energy, cell densities, and magnetic properties. Abstract Light‐based additive manufacturing methods are
Puskal Kunwar, Arun Poudel, Ujjwal Aryal, Rui Xie, Zachary J. Geffert, Haven Wittmann, Daniel Fougnier, Tsung Hsing Chiang, Mathew M. Maye, Zhen Li, Pranav Soman   +10 more
wiley   +1 more source

Test results at transonic speeds on a contoured over-the-wing propfan model [PDF]

A semispan wing/body model with a powered highly loaded propeller has been tested to provide data on the propulsion installation drag of advanced propfan-powered aircraft. The model had a supercritical wing with a contoured over-the-wing nacelle.
Levin, Alan D., Smeltzer, Donald B., Smith, Ronald C.   +2 more
core   +1 more source

Photonic Crystal Enhanced Microscopy on a 2D Photonic Crystal Surface

Advanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
This work demonstrates the design, fabrication, and the first‐time test of a 2D photonic crystal surface for photonic resonator absorption microscopy. The designed surface uniformly enhances electromagnetic near fields, achieving > 100% improved detecting uniformity for surface‐captured AuNPs from a blocking biosensor assay aimed for detecting SARS‐CoV‐
Weinan Liu, Siyan Li, Edmond Chow, Seemesh Bhaskar, Ying Fang, Brian T. Cunningham   +5 more
wiley   +1 more source

Optimizing the detection of N-nitrosamine mutagenicity in the Ames test. [PDF]

Regul Toxicol Pharmacol
Heflich RH, Bishop ME, Mittelstaedt RA, Yan J, Guerrero SK, Sims AM, Mitchell K, Moore N, Li X, Mei N, Elespuru RK, King ST, Keire DA, Kruhlak NL, Dorsam RT, Raw AS, Davis Bruno KL, McGovern TJ, Atrakchi AH.   +18 more
europepmc   +1 more source