Results 181 to 190 of about 423 (305)

Invisible Polymer Walls Enhance Reorientational Optical Nonlinearity in Oligothiophene‐Doped Liquid Crystals

open access: yesAdvanced Functional Materials, EarlyView.
The polymer wall stabilized dye‐doped liquid crystals (PWLCs) enhance the sensitivity of photoinduced molecular reorientation in dye‐doped LC systems. The PWLC with an invisible polymer wall successfully reduces the threshold intensity and functions as an optical limiter under the incidence of low intensity light laser source.
Junki Yokota   +6 more
wiley   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

open access: yesAdvanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri   +11 more
wiley   +1 more source

Improvement of electromagnetic compatibility of traction substation convertors with supply grid and catenary

open access: yes, 2016
Дисертація на здобуття вченого ступеня кандидата технічних наук за фахом 05.09.12 – напівпровідникові перетворювачі електроенергії. – Національний технічний університет "Харківський політехнічний інститут" – Харків - 2016.
Плахтій, Олександр Андрійович   +1 more
core  

Chiral Phase Change Nanomaterials

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow   +11 more
wiley   +1 more source

Зворотньоходовий перетворювач з транзистором на основі нітриду галію

open access: yes, 2019
Структура та обсяг магістерської дисертації Магістерська дисертація: 91 стр., 33 рис., 21 табл., 1 додаток, 27 джерел. Актуальність теми. Популярність зворотноходових перетворювачів на сьогодні значно підвищилась у зв’язку з простотою та дешевизною ...
Арсенюк, Дмитро Олегович
core  

Robust Series Arc Detection for DC MEA Power Systems Using Windowed Fractal Dimension

open access: yes
The rapid development of more-electric transportation has led to increased use of higher voltage DC circuit architecture and battery storage. These developing technologies create a higher risk of DC arc failure resulting from component or insulation ...
Thomas, David W.P.   +3 more
core   +1 more source

Microfabricated Anisotropic Myobundles for the Scalable Production of Cardiac Tissue Grafts

open access: yesAdvanced Functional Materials, EarlyView.
Controlling the anisotropy of cardiac tissue remains an outstanding challenge in the field of cardiac tissue engineering. Here, we introduce an approach to generate anisotropic cardiac myobundles using cell‐adhesive, synthetic, electrospun fibers and stem cell‐derived cardiac fibroblasts.
Maggie E. Jewett   +15 more
wiley   +1 more source

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