Raymond Schaak

About

Shabnam Akhtari is a professor at the Pennsylvania State University, based in the McAllister Building. Her research interests include Number Theory, Geometry of Numbers, and Diophantine Analysis. Her work focuses on these areas, contributing to the understanding of their underlying mathematical structures and properties.

Research topics

• Materials science
• Chemistry
• Nanotechnology
• Organic chemistry
• Chemical engineering
• Inorganic chemistry
• Physical chemistry
• Thermodynamics
• Optoelectronics
• Crystallography

Selected publications

• Rational construction of a scalable heterostructured nanorod megalibrary

  Science · 2020 · 256 citations

  Senior authorCorresponding

  Integrating multiple materials in arbitrary arrangements within nanoparticles is a prerequisite for advancing many applications. Strategies to synthesize heterostructured nanoparticles are emerging, but they are limited in complexity, scope, and scalability. We introduce two design guidelines, based on interfacial reactivity and crystal structure relations, that enable the rational synthesis of a heterostructured nanorod megalibrary. We define synthetically feasible pathways to 65,520 distinct m…

  PublisherDOI

• Simultaneous Multication Exchange Pathway to High-Entropy Metal Sulfide Nanoparticles

  Journal of the American Chemical Society · 2021 · 211 citations

  Senior authorCorresponding

  S nanoparticles are thermally stable, and exchange reactions using fewer cations do not produce the high entropy phase. The use of colloidal nanoparticle cation exchange as a synthetic platform provides both entropic and enthalpic driving forces that, in addition to configurational entropy, enable the formation of high entropy phases at solution-accessible temperatures.

  DOI

• Band Gap Narrowing in a High-Entropy Spinel Oxide Semiconductor for Enhanced Oxygen Evolution Catalysis

  Journal of the American Chemical Society · 2023 · 194 citations

  Senior authorCorresponding

  expands the scope of synergistic properties exhibited by high-entropy materials and offers insight into the question of how the electronic structure of multicomponent oxide materials can be engineered via a high-entropy approach to achieve enhanced catalytic properties.

  DOI

• Made-to-Order Heterostructured Nanoparticle Libraries

  Accounts of Chemical Research · 2020 · 58 citations

  1st authorCorresponding

  S-derived nanorod precursors along with simple design criteria based on preferred cation exchange locations and crystal structure relationships. Using these guidelines, we mapped out synthetically feasible pathways to 65 520 distinct heterostructured nanorods, experimentally observed 113 members of this heterostructured nanorod megalibrary, and then made three of these in high yield and in isolatable quantities. By expansion of these capabilities into a broader scope of materials and identificat…

  PublisherDOI

• Colloidal Nanoparticles of High Entropy Materials: Capabilities, Challenges, and Opportunities in Synthesis and Characterization

  ACS Nanoscience Au · 2023 · 54 citations

  Senior authorCorresponding

  Materials referred to as "high entropy" contain a large number of elements randomly distributed on the lattice sites of a crystalline solid, such that a high configurational entropy is presumed to contribute significantly to their formation and stability. High temperatures are typically required to achieve entropy stabilization, which can make it challenging to synthesize colloidal nanoparticles of high entropy materials. Nonetheless, strategies are emerging for the synthesis of colloidal high e…

  PublisherDOI

Recent grants

• Total Synthesis Toolkit for Constructing Ternary Hybrid Nanoparticles

  NSF · $420k · 2014–2018

• CAREER: Low-Temperature Solution Synthesis Of Intermetallic Nanomaterials

  NSF · $410k · 2007–2012

• Chemical Pathways for Controlling Polymorphism in Nanoscale Metal Chalcogenides

  NSF · $350k · 2013–2016

Frequent coauthors

• Paul S. Weiss

  California NanoSystems Institute

  27 shared

• Carlos G. Read

  California Institute of Technology

  26 shared

• Nicholas A. Kotov

  University of Michigan–Ann Arbor

  24 shared

• Nathan S. Lewis

  California Institute of Technology

  21 shared

• Thomas E. Mallouk

  20 shared

• Luis M. Liz‐Marzán

  Ikerbasque

  20 shared

• Rowan R. Katzbaer

  Pennsylvania State University

  20 shared

• Eric J. Popczun

  Oak Ridge Associated Universities

  18 shared

Awards & honors

• NSF CAREER Award (2006)
• Beckman Young Investigator Award (2006)
• DuPont Young Professor Grant (2006)
• Alfred P. Sloan Research Fellow (2007)
• Camille Dreyfus Teacher-Scholar Award (2007)

Similar researchers at Pennsylvania State University

• Ayusman Senh-96
• Carsten Krebsh-83
• Harry Allcockh-79