Frederick Pearsall

ORCID: 0000-0003-1577-3746
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About
Contact & Profiles
Research Areas
  • Ferroelectric and Piezoelectric Materials
  • Dielectric properties of ceramics
  • Dielectric materials and actuators
  • Multiferroics and related materials
  • Conducting polymers and applications
  • Photonic and Optical Devices
  • Advanced Sensor and Energy Harvesting Materials
  • Advanced Surface Polishing Techniques
  • Optical Coatings and Gratings
  • Perovskite Materials and Applications
  • Advanced Photocatalysis Techniques
  • Flame retardant materials and properties
  • Island Studies and Pacific Affairs
  • Diverse Musicological Studies
  • MXene and MAX Phase Materials
  • Microwave Dielectric Ceramics Synthesis

Veeco (United States)
2021

CUNY Energy Institute
2016-2020

City University of New York
2016-2020

City College of New York
2016-2020

The Graduate Center, CUNY
2016-2020

Division of Chemistry
2017

A novel and greatly simplified strategy was developed to fabricate high-permittivity dielectric nanocomposites. Interface structure, precursor rheology properties of the 0–3 BaTiO<sub>3</sub>/PVDF–hfp nanocomposite film were investigated.

10.1039/c7ra03250a article EN cc-by-nc RSC Advances 2017-01-01

Ba(Ti,Fe)O3 is a useful system for the exploration of multiferroic properties as function composition and variation in structure, based upon model intersubstitution B site cation. Nanocrystals could be used building blocks composite materials, provided ferroic are recognizable at this length scale Ti Fe serve ideal models case d0 versus dn perovskite. A series iron-substituted barium titanate nanocrystals (BaTi1–xFexO3) were synthesized 60 °C using hybrid sol–gel chemical solution processing...

10.1021/acs.chemmater.8b04447 article EN Chemistry of Materials 2019-01-14

Frequency stable, high permittivity nanocomposite capacitors produced under mild processing conditions offer an attractive replacement to MLCCs derived from conventional ceramic firing. Here, 0–3 nanocomposites were prepared using gel-collection barium titanate nanocrystals, suspended in a poly(furfuryl alcohol) matrix, resulting effective permittivity, low loss dielectric. The nanocrystals are at 60 °C, emerging as fully crystallized cubic BTO, 8 nm, paraelectric with highly functional...

10.1021/acsami.7b13879 article EN ACS Applied Materials & Interfaces 2017-11-01

Inorganic materials synthesis techniques that can approach low temperature routes akin to chemical solution processing are attractive for their ability prepare nanocrystalline oxides.

10.1039/c6tc02327d article EN Journal of Materials Chemistry C 2016-01-01

Nanotechnology offers a variety of pathways to novel and low cost device fabrication for future that will undoubtedly contain literally billions ubiquitous electronic devices. Nanocomposite metal-insulator-metal (MIM) capacitors are interest due the possibility reducing number discrete components in printed circuit boards, alternatively using embedded or directly nanopackaging conjunction with integrated circuits. Flexible substrates also become candidates when employing processing...

10.1109/tnano.2019.2939093 article EN publisher-specific-oa IEEE Transactions on Nanotechnology 2019-09-11

BaMn<sub>3</sub>Ti<sub>4</sub>O<sub>14+δ</sub> (<italic>δ</italic> = 0.25, BMT-134), a recently discovered single-phase multiferroic complex oxide was doped with varying concentrations of Fe in order to assess the effect on magnetic and dielectric behavior.

10.1039/d0tc00703j article EN Journal of Materials Chemistry C 2020-01-01

Slanted gratings show high efficiency in coupling light into waveguides, which is critical for optics such as the diffractive optical elements (DOEs) used augmented reality glasses. Fabrication of master molds producing slanted require etch selectivity between SiO<sub>2</sub> and a metal mask. The industry standard trench etch, Reactive Ion Etch (RIE), cannot produce trenches. In this work, we demonstrate fabrication surface relief grating (SRG) with slant angles 30, 45 60 degrees. Using...

10.1117/12.2582752 article EN 2021-02-19

Slanted gratings show high efficiency in coupling light into waveguides, which is critical for optics such as the diffractive optical elements (DOEs) used augmented reality glasses. Fabrication of master molds producing slanted require etch selectivity between SiO2 and a metal mask. The industry standard trench etch, Reactive Ion Etch (RIE), cannot produce trenches. In this work, we demonstrate fabrication surface relief grating (SRG) with slant angles 30, 45 60 degrees. Using Beam (RIBE),...

10.1117/12.2582875 article EN 2021-03-04

Correction for ‘Interface structure, precursor rheology and dielectric properties of BaTiO<sub>3</sub>/PVDF–hfp nanocomposite films prepared from colloidal perovskite nanoparticles’ by Y. N. Hao <italic>et al.</italic>, <italic>RSC Adv.</italic>, 2017, <bold>7</bold>, 32886–32892.

10.1039/c7ra90094e article EN cc-by-nc RSC Advances 2017-01-01

Nanocomposite metal-insulator-metal (MIM) capacitors are of great interest due to the possibility reducing number discrete components in printed circuit boards, and alternatively using embedded or directly conjunction with integrated circuits. Flexible substrates also become candidates when employing low processing temperatures. In addition compatibility nanomanufacturing, prospect designing a nanocomposite dielectric, by combining colloidal nanoparticle fillers polymer hosts, lends itself...

10.1109/nmdc.2018.8605917 article EN 2018-10-01
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