Results 71 to 80 of about 2,022 (260)

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora   +17 more
wiley   +1 more source

Stepwise On‐Surface Synthesis and Transformations of Two‐Dimensional Covalent Organic Frameworks by Controlled Thermal Stimuli

open access: yesAdvanced Materials, EarlyView.
The seminal transformation of a 2D‐COF (SURFCOF‐IMDEA1) into a 2D porous COF (SURFCOF‐IMDEA2) on Au(111) by a sequential C‐C coupling and ladderization triggered by thermal annealing steps at increasing temperatures is reported. Abstract The development of covalent organic frameworks (COFs) is currently a primary objective in materials science, taking ...
Ana Barragán   +11 more
wiley   +1 more source

La capacidad de innovación jurídica de las ordenanzas municipales. Especial referencia a la regulación de la vivienda tasada municipal mediante ordenanzas municipales en la Ley 2/2006 de suelo y urbanismo de la CAPV

open access: yesRevista Vasca de Administración Pública, 2008
Until the enactment of the Spanish Constitution, it was the central government that used to enjoy all powers related to social housing. When the Constitution was passed, several statutes of autonomy were enacted and the Autonomous Communities began to ...
GONZALO FERNÁNDEZ-RUBIO HORNILLOS
doaj   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

open access: yesAdvanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano   +18 more
wiley   +1 more source

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

open access: yesAdvanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti   +12 more
wiley   +1 more source

El nuevo régimen jurídico del derecho de participación ciudadana. Un repaso a la reciente oleada legislativa

open access: yesRevista Vasca de Administración Pública, 2014
During last times there has been an emergence of a «normative boom» by the Autonomous Communities that have started an authentic race to pass acts whose scope is to renew the right of citizen¿s participation.
Sergio Castel Gayán
doaj   +1 more source

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

open access: yesAdvanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia   +3 more
wiley   +1 more source

La llengua a l'Estatut valencià. Comentaris a les disposicions lingüístiques del nou Estatut valencià

open access: yesRevista de Llengua i Dret - Journal of Language and Law, 2008
The process of reforming the Valencian Statute of Autonomy, which culminated in the passage of the April 10, 2006 Implementing Act, reforming the July 1, 1982 evidenced an extremely high degree of consensus between the two majority parties, the Popular ...
Mercè Teodoro i Peris
doaj  

Gapless Superconductivity From Extremely Dilute Magnetic Disorder in 2H‐NbSe2‐xSx

open access: yesAdvanced Materials, EarlyView.
We demonstrate that 2H‐NbSe2‐xSx hosts gapless superconductivity at unexpectedly low magnetic impurity concentrations. Combining STM, Bogoliubovde Gennes simulations, DFT, and quasiparticle interference, we comprehensively study the development of gapless behavior and show that SeS substitution reshapes the band structure, enhances nesting, and drives ...
Jose Antonio Moreno   +16 more
wiley   +1 more source

Voluntary academic decorum: ethical self-regulation, autonomy, and institutional integrity in higher education

open access: yesDiscover Education
This article develops the concept of voluntary academic decorum as an ethical framework that conceptualizes faculty appearance and professional comportment as expressions of moral autonomy rather than objects of administrative regulation.
Yisell Vigoa Escobedo   +3 more
doaj   +1 more source

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