Results 181 to 190 of about 265,624 (295)

Six hundred years of South American tree rings reveal an increase in severe hydroclimatic events since mid-20th century. [PDF]

Proc Natl Acad Sci U S A, 2020
Morales MS, Cook ER, Barichivich J, Christie DA, Villalba R, LeQuesne C, Srur AM, Ferrero ME, González-Reyes Á, Couvreux F, Matskovsky V, Aravena JC, Lara A, Mundo IA, Rojas F, Prieto MR, Smerdon JE, Bianchi LO, Masiokas MH, Urrutia-Jalabert R, Rodriguez-Catón M, Muñoz AA, Rojas-Badilla M, Alvarez C, Lopez L, Luckman BH, Lister D, Harris I, Jones PD, Williams AP, Velazquez G, Aliste D, Aguilera-Betti I, Marcotti E, Flores F, Muñoz T, Cuq E, Boninsegna JA.   +37 more
europepmc   +1 more source

Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD

Advanced Materials, EarlyView.
Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo, Masoud Mansouri, Carlos Garcia‐Fernandez, Daniel Sánchez‐Portal, Aran Garcia‐Lekue, Gustavo Ceballos, Aitor Mugarza   +6 more
wiley   +1 more source

Tree rings reveal persistent Western Apache (Ndee) fire stewardship and niche construction in the American Southwest. [PDF]

Proc Natl Acad Sci U S A
Roos CI, Kaib JM, Laluk NC, Adams MM, Guiterman CH, Baisan CH, Morino K, Swetnam TW.   +7 more
europepmc   +1 more source

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

Advanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro, Hugo Aramberri, Víctor Rouco, Gabriel Sánchez‐Santolino, Mariona Cabero, Fernando Gallego, David Sánchez‐Manzano, José M. González‐Calbet, Federico Mompeán, Mar García‐Hernández, Alberto Rivera‐Calzada, Jorge Íñiguez‐González, Carlos León, Jacobo Santamaría   +13 more
wiley   +1 more source

Tree rings and Earth System Models unveil mid-Holocene alpine climate. [PDF]

Proc Natl Acad Sci U S A
Bunn AG.
europepmc   +1 more source

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

Advanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel, Haotian Lu, Jiayan Zhang, Desheng Yao, Ananya Bhardwaj, Ramiro Contreras, Karim Sabra, Xiaoyu (Rayne) Zheng   +7 more
wiley   +1 more source

Tracing ancient solar cycles with tree rings and radiocarbon in the first millennium BCE. [PDF]

Nat Commun
Brehm N, Pearson CL, Christl M, Bayliss A, Nicolussi K, Pichler T, Brown D, Wacker L.   +7 more
europepmc   +1 more source

Atomistic Mechanisms Triggered by Joule Heating Effects in Metallic Cu‐Bi Nanowires for Spintronics

Advanced Materials, EarlyView.
Bi doped metallic Cu nanowires are promising for spintronics thanks to the stabilization of a giant spin Hall effect. However, heat resulting from current injection forces Bi to leave solution, forcing segregation into monoatomic decorations which evolve into coherent crystalline aggregates.
Alejandra Guedeja‐Marrón, Juan Ignacio Beltrán, Matilde Saura‐Múzquiz, Paolo Perna, M. Carmen Muñoz, Lucas Pérez, Maria Varela   +6 more
wiley   +1 more source

Mistletoe-induced carbon, water and nutrient imbalances are imprinted on tree rings. [PDF]

Tree Physiol
González de Andrés E, Gazol A, Querejeta JI, Colangelo M, Camarero JJ.   +4 more
europepmc   +1 more source

3D‐Printable, Honeycomb‐Inspired Tissue‐Like Bioelectrodes for Patient‐Specific Neural Interface

Advanced Materials, EarlyView.
3D printed MRI‐compatible tissue‐like neural electrodes tailored to individual gyral patterns. This honeycomb‐inspired printable gel electrode (HiPGE) employs a bioinspired architecture with soft hydrogels, engineered to match the softness of brain tissue.
Marzia Momin, Luyi Feng, Xiaoai Chen, Salahuddin Ahmed, Basma AlMahmood, Li‐Pang Huang, Jiashu Ren, Xinyi Wang, Hyunjin Lee, Samuel R. Cramer, Nanyin Zhang, Sulin Zhang, Tao Zhou   +12 more
wiley   +1 more source