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Showing 1–12 of 12 results
Advanced filters: Author: Pavan Nukala Clear advanced filters

  • Polar metals such as GeTe could store information using electric domains but the high conductivity screens electric fields, preventing the use of usual domain control techniques. Here, the authors demonstrate that polar domains in GeTe can be manipulated using electrically generated heat shocks.

    • Pavan Nukala
    • Mingliang Ren
    • Ritesh Agarwal
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-9

  • Phase change memories involve crystalline-to-amorphous transformations which require high current densities. Here, the authors introduce extended defects in GeTe crystals, reduce the current densities necessary for amorphization and obtain low-power, scalable memories with multiple resistance states.

    • Pavan Nukala
    • Chia-Chun Lin
    • Ritesh Agarwal
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-8

  • Electrostrain, an important value for actuators, larger than 1% is only achieved in single crystals. Here, a pseudo-ternary polycrystalline ferroelectric with spontaneous lattice strain has 1.3% electrostrain, which may enable cheaper piezoelectrics.

    • Bastola Narayan
    • Jaskaran Singh Malhotra
    • Rajeev Ranjan
    Research
    Nature Materials
    Volume: 17, P: 427-431

  • Lead-free piezoelectric materials with large electromechanical responses are important for nano electromechanical systems devices. Here the authors defect engineer Si integrated BaTiO3 to enhance the electromechanical response and report a large electrostrictive response at frequencies <10 kHz.

    • Shubham Kumar Parate
    • Sandeep Vura
    • Pavan Nukala
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-8

  • The metal-insulator transition in VO2 is concomitant with the structural transition, making purely electrical control challenging. Here the authors use a modulation-doped heterostructure to demonstrate modulation of the transition temperature with doping, without introducing structural changes.

    • Debasish Mondal
    • Smruti Rekha Mahapatra
    • Naga Phani B. Aetukuri
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-11

  • Encapsulated liquids are important for several microreactor applications, including (bio)chemistry in confined spaces. Here, the authors report on oil-infused particle shells that allow control of shell thickness, stability, and permeability for applications in crystal growth and cell cultivation.

    • Rutvik Lathia
    • Satchit Nagpal
    • Prosenjit Sen
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-14

  • Ferroelectric hafnia occurs only in a thin-film orthorhombic phase that needs wake-up cycling to induce ferroelectricity. Here, by growing thin-film Hf0.5Zr0.5O2 under strain, a polar rhombohedral phase is achieved that does not require cycling.

    • Yingfen Wei
    • Pavan Nukala
    • Beatriz Noheda
    Research
    Nature Materials
    Volume: 17, P: 1095-1100

  • The discovery of ferroelectric switching in ultrathin layers of hafnium dioxide has aroused significant interest for low-power non-volatile memory technologies. This Perspective discusses how lessons learned from hafnium dioxide-based ferroelectrics can be applied to other applications, and other binary oxides.

    • Beatriz Noheda
    • Pavan Nukala
    • Mónica Acuautla
    Reviews
    Nature Materials
    Volume: 22, P: 562-569