Results 91 to 100 of about 31,420 (299)

Past rates of accumulation in central West Antarctica [PDF]

, 2004
The spatial variation in ice accumulation is critical to the form and stability of ice sheets. In West Antarctica, knowledge of present ice accumulation rates is restricted to sparse measurements and interpolations across data free regions, while ...
Ackert, Antony J. Payne, Bull, Dansgaard, Fahnestock, Fortuin, Grootes, Hamilton, Hammer, Huybrechts, Lorius, Martin J. Siegert, Nereson, Petit, Philberth, Raynaud, Stone, Vaughan, Vaughan, Welch, Whillans   +20 more
core   +1 more source

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

Advanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu, Florian Maudet, Thanh Luan Phan, Wassim Hamouda, Richard Schroedter, Ahmet Samil Demirkol, Ronald Tetzlaff, Veeresh Deshpande, Catherine Dubourdieu   +8 more
wiley   +1 more source

Resolving radiostratigraphy with squinted synthetic aperture radar focusing

Journal of Glaciology
Englacial layers are a product of historic accumulation and are reshaped by ice deformation. Hence, radio-echo sounding (RES), which can resolve englacial layering, has been adopted as an observational tool to infer ice age and ice dynamics from ice ...
Benjamin H. Hills, Matthew R. Siegfried, Nicholas Holschuh, Hannah Verboncoeur, Dustin M. Schroeder   +4 more
doaj   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

“Dr. Satan’s Echo Chamber: reggae, technology and the diaspora process,” reprint. [PDF]

, 2018
Reprint of an essay first published in 1997.Published ...
Chude-Sokei, Louis
core  

Anomalous Pressure‐Temperature Ultrahigh Sensitivities in Atomically Engineered Carbonitride MXenes for Multifunctional Wearable Human–Machine Interfaces: Joint Computational–Experimental Elucidations

Advanced Functional Materials, EarlyView.
Atomically engineered layered 2D Ti3CNTz carbonitride MXene exhibits ultrahigh heat and pressure sensitivity, enabling dual‐mode sensors with 300%–400% performance enhancement and durability for real‐time health‐monitoring interface devices. Precise nitrogen incorporation (e.g., Ti3C1.8N0.2Tz) boosts conductivity, enhancing temperature response, while ...
Debananda Mohapatra, Ju‐Hyoung Han, Hyun Jin Kang, Jeong Eun Byun, Seonghun Lee, Sanghyuk Lee, Yeseul Son, Jaeeun Park, Tae Joo Shin, Youngho Kang, Jung Woo Lee, Soon‐Yong Kwon, Soo‐Hyun Kim   +12 more
wiley   +1 more source

Layer disturbances and the radio-echo free zone in ice sheets [PDF]

The Cryosphere, 2009
Radio-echo sounding of the Antarctic and Greenlandic ice sheets often reveals a layer in the lowest hundreds of meters above bedrock more or less free of radio echoes, known as the echo-free zone (EFZ).
R. Drews, O. Eisen, I. Weikusat, S. Kipfstuhl, A. Lambrecht, D. Steinhage, F. Wilhelms, H. Miller   +7 more
doaj  

Feasibility study and design concept for an orbiting ice-penetrating radar sounder to characterize in three-dimensions the Europan ice mantle down to (and including) any ice/ocean interface [PDF]

, 1999
This report presents a radar sounding model based on the range of current working hypotheses for the nature of Europa's icy shell.Institute for ...
Blankenship, D.D., Edwards, B.C., Geissler, P.E., Gurnett, D., Johnson, W.T.K., Kim, Y., Kofman, W., Moore, J.C., Morse, D.L., Pappalardo, R.T., Picardi, G., Raney, R.K., Rodriguez, E.R., van Zyl, J., Weertman, J., Zebker, H.A.   +15 more
core   +1 more source

Additive Manufacturing of NiTi Shape Memory Alloys for Elastocaloric Applications: A Review

Advanced Functional Materials, EarlyView.
Additive manufacturing enables complex NiTi architectures that overcome key limitations in elastocaloric refrigeration, including poor heat transfer and high mechanical work input. This review surveys recent advances in LPBF‐ and DED‐fabricated NiTi shape memory alloys for elastocaloric applications, highlighting process–structure–performance ...
Ignatius Andre Setiawan, Mohammad Mehrali, Jaka Tušek, Shiva Mohajerani, Xiebin Wang, Dermot Brabazon, Mohammad Elahinia, Mehrshad Mehrpouya   +7 more
wiley   +1 more source

Topographic and geologic controls on the Northeast Greenland Ice Stream

Annals of Glaciology
The Northeast Greenland Ice Stream (NEGIS) is an elongated feature extending ∼600 km into the interior of the Greenland Ice Sheet. Here, we investigate detailed subglacial topography along the length of the NEGIS to ascertain the characteristics of the ...
Charlotte M. Carter, Steven Franke, Guy J.G. Paxman, Stewart S.R. Jamieson, Michael J. Bentley, Daniela Jansen, John Paden, Olaf Eisen   +7 more
doaj   +1 more source