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\title{ACS AMA: Hi Reddit! My name is Nathan Gianneschi, a nanomaterials
researcher. Ask me anything about biomedical applications of
nanomaterials!}



\author[1]{AmerChemSocietyAMA }%
\author[1]{r/Science AMAs}%
\affil[1]{Affiliation not available}%


\vspace{-1em}



  
  \date{April 23, 2026}


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\begin{abstract}
ACS AMA Hi Reddit! My name is Nathan Gianneschi and I research
nanomaterials at the University of California, San Diego, but I am
moving my laboratory to Northwestern University; coming soon, at the
beginning of July this year. Recently work in my lab was published in
ACS Central Science, an open access journal, entitled ``Mimicking
Melanosomes: Polydopamine Nanoparticles as Artificial Microparasols''
http://pubs.acs.org/doi/full/10.1021/acscentsci.6b00230. This work
describes a nanomaterial that could be used to protect cells from UV
damage. I look forward to answering your questions about this research
today! More broadly, our research group takes an interdisciplinary
approach to nanomaterials research with a focus on multifunctional
materials with interests that include biomedical applications,
programmed interactions with biomolecules and cells, and basic research
into nanoscale materials design, synthesis and characterization. For
this work I have been awarded the NIH Director's New Innovator Award,
the NIH Director's Transformative Research Award and with a Presidential
Early Career Award for Scientists and Engineers. My academic background
started with my B.Sc. (Hons) at the University of Adelaide, Australia in
1999. In 2005 I completed my Ph.D at Northwestern University. Following
a Dow Chemical postdoctoral fellowship at The Scripps Research
Institute, in 2008 I began my independent career at the University of
California, San Diego where I am currently Teddy Traylor Scholar and
Professor of Chemistry \& Biochemistry, NanoEngineering and Materials
Science \& Engineering. In addition to my NIH citation, I was awarded a
Dreyfus Foundation Fellowship, I am a Kavli Fellow of the National
Academy of Sciences, a Fellow of the Royal Society of Chemistry, and am
an Alfred P. Sloan Foundation Fellow. Ask me anything about using
nanomaterials for biomedical applications, including this work on
melanosome mimics. I will be back at 11am EDT (10am CDT, 8am PDT, 3pm
UTC) to answer your questions. I'm back to answer questions (10am CDT).
Hello! Thank you to all of you for your interest and fantastic
questions. I have enjoyed trying to answer as many of you as possible,
and I apologize if I was too brief, or could not get to your question
today. Thank you to the ACS, and the journal, ACS Central Science for
setting up this AMA session. All the best with your work, studies, life
and health. Signing off - 12:57pm (CDT)%
\end{abstract}%



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