Gold Nanocages are hollow, porous gold nanoparticles ranging in size from 10 to over 150 nm. They are created by reacting silver nanoparticles with chloroauric acid (HAuCl4) in boiling water. Whereas gold nanoparticles absorb light in the visible spectrum of light (at about 550 nm), gold nanocages absorb light in the near-infrared, where biological tissues absorb the least light. Because they are also biocompatible, gold nanocages are promising as a contrast agent for optical coherence tomography. Gold nanocages also absorb light and heat up (Photothermal effect), killing surrounding cancer cells. Nanocages have been functionalized with cancer-specific antibodies.
Thalappil Pradeep is an institute professor and professor of chemistry in the Department of Chemistry at the Indian Institute of Technology Madras. He is also the Deepak Parekh Chair Professor. In 2020 he received the Padma Shri award for his distinguished work in the field of Science and Technology. He has received the Nikkei Asia Prize (2020), The World Academy of Sciences (TWAS) prize (2018), and the Shanti Swarup Bhatnagar Prize for Science and Technology in 2008 by Council of Scientific and Industrial Research.
Younan Xia is a Chinese-American chemist, materials scientist, and bioengineer. He is the Brock Family Chair and Georgia Research Alliance (GRA) Eminent Scholar in Nanomedicine in the Wallace H. Coulter Department of Biomedical Engineering, with joint appointments in the School of Chemistry & Biochemistry, the School of Chemical & Biomolecular Engineering, and Parker H. Petit Institute for Bioengineering & Bioscience at the Georgia Institute of Technology.
Paula Therese Hammond is a David H. Koch Professor in Engineering and the Head of the Department of Chemical Engineering at the Massachusetts Institute of Technology (MIT). She was the first woman and person of color appointed as head of the Chemical Engineering department. Her laboratory designs polymers and nanoparticles for drug delivery and energy-related applications including batteries and fuel cells.
A localized surface plasmon (LSP) is the result of the confinement of a surface plasmon in a nanoparticle of size comparable to or smaller than the wavelength of light used to excite the plasmon. When a small spherical metallic nanoparticle is irradiated by light, the oscillating electric field causes the conduction electrons to oscillate coherently. When the electron cloud is displaced relative to its original position, a restoring force arises from Coulombic attraction between electrons and nuclei. This force causes the electron cloud to oscillate. The oscillation frequency is determined by the density of electrons, the effective electron mass, and the size and shape of the charge distribution. The LSP has two important effects: electric fields near the particle's surface are greatly enhanced and the particle's optical absorption has a maximum at the plasmon resonant frequency. Surface plasmon resonance can also be tuned based on the shape of the nanoparticle. The plasmon frequency can be related to the metal dielectric constant. The enhancement falls off quickly with distance from the surface and, for noble metal nanoparticles, the resonance occurs at visible wavelengths. Localized surface plasmon resonance creates brilliant colors in metal colloidal solutions.
Catherine "Cathy" J. Murphy is an American chemist and materials scientist, and is the Larry Faulkner Professor of Chemistry at the University of Illinois at Urbana-Champaign (UIUC). The first woman to serve as the head of the department of chemistry at UIUC, Murphy is known for her work on nanomaterials, specifically the seed-mediated synthesis of gold nanorods of controlled aspect ratio. She is a member of the American Association for the Advancement of Science, National Academy of Sciences, and the American Academy of Arts and Sciences in 2019.
Irshad Hussain is a Pakistani Scientist in the field of chemistry and among the few pioneers to initiate nanomaterials research in Pakistan.
Christy Lynn Haynes is a chemist at the University of Minnesota. She works at the interface of analytical, biological, and nanomaterials chemistry.
Jill Millstone is a professor of chemistry at the University of Pittsburgh. She works on metal-ligand chemistry in nanoparticle synthesis. She is the American Chemical Society Kavli Foundation Emerging Leader in Chemistry Lecturer for 2018.
Vicki Leigh Colvin is a professor of engineering and molecular pharmacology at Brown University. She is the director of the Centre for Biomedical Engineering. Her work focuses on the synthesis and characterisation of nanomaterials. She is a Fellow of the American Association for the Advancement of Science and the American Institute for Medical and Biological Engineering.
Sherine O. Obare is the dean of the Joint School of Nanoscience and Nanoengineering at the University of North Carolina at Greensboro and North Carolina Agricultural and Technical State University. She works on nanomaterials for sensing and drug delivery.
Susan M. Kauzlarich is an American chemist and is presently a distinguished professor of chemistry at the University of California, Davis. At UC Davis, Kauzlarich leads a research group focused on the synthesis and characterization of Zintl phases and nanoclusters with applications in the fields of thermoelectric materials, magnetic resonance imaging, energy storage, opto-electronics, and drug delivery. Kauzlarich has published over 250 peer-reviewed publications and has been awarded several patents. In 2009, Kauzlarich received the annual Presidential Award for Excellence in Science, Mathematics and Engineering Mentoring, which is administered by the National Science Foundation to acknowledge faculty members who raise the membership of minorities, women and disabled students in the science and engineering fields. In January 2022 she became Deputy Editor for the scientific journal, Science Advances.
So-Jung Park 박소정(朴昭靜) is a professor of chemistry at Ewha Womans University, Republic of Korea. Her research considers the self-assembly of nanoparticles and functional molecules for biomedical and optoelectronic devices. She serves as Associate Editor of ACS Applied Materials & Interfaces and Nanoscale.
Yayuan Liu is a Chinese-American materials scientist at Massachusetts Institute of Technology. Her research considers electrochemistry, nanomaterials and materials characterisation for the development of next-generation batteries. She was selected as one of the 2019 American Chemical Society Young Investigators and included in the 2021 Forbes 30 Under 30 list of top scientists.
Stephanie Lee Brock is an American chemist who is professor of inorganic chemistry at Wayne State University. Her research considers metal pnictides and chalcogenide nanomaterials. She is a Fellow of the American Association for the Advancement of Science and the American Chemical Society.
Liane M. Rossi is a Brazilian chemist who is a Professor of Inorganic Chemistry at the University of São Paulo. Her research considers nanomaterials and catalysis. She serves on the editorial boards of ChemistrySelect, ACS Catalysis and ACS Sustainable Chemistry & Engineering.
Emilie Ringe is an American chemist who is an assistant professor at the University of Cambridge. She was selected by Chemical & Engineering News as one of its "Talented Twelve" young scientists in 2021.
Markita del Carpio Landry is a Bolivian-American chemist who is an assistant professor in the department of chemical engineering at the University of California, Berkeley. Her research considers nanomaterials for brain imaging and the development of sustainable crops. She was a recipient of the 2022 Vilcek prize for creative promise. del Carpio Landry's work has been featured on NPR, popular mechanics, the San Francisco Chronicle, and C&E News.
Rebekka Klausen is an American chemist who is the Second Decade Society Associate Professor at Johns Hopkins University. Her research considers carbon and silicon-based nanomaterials for optoelectronic devices. She was a finalist for the 2021 Blavatnik Awards for Young Scientists.
Tijana Rajh is an American Yugoslav materials scientist who is a professor and director of the Arizona State University School of Molecular Sciences. Her research considers the development of nanomaterials and materials for quantum technologies. She was awarded the Association for Women in Science Innovator Award in 2009, and named a Fellow of the American Association for the Advancement of Science in 2014.
