@NanoScienceSam

Physical materials chemist focused on nanocrystals. Ph.D. at Northwestern, currently a postdoc at University of Washington.

Joined April 2019
  • Tweets32
  • Following82
  • Followers112
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Hey #chemtwitter, does anyone know where to find a good model/file for 3D printing a nanocrystal? Would love to print one for my desk!
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Sam Harvey retweeted
ACS Nano@acsnano12 Sep 2023
Enhanced Charge Transfer from Coinage Metal Doped InP Quantum Dots By Brandi Cossairt et al @brandicossairt @UW  🔓 Open access in ACS Nanoscience Au 👉 go.acs.org/68f
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🔓 #OpenAccess: "Differentiating Thermal Conductances at Semiconductor Nanocrystal/Ligand and Ligand/Solvent Interfaces in Colloidal Suspensions" by Liang, Diroll, Wong, Harvey, Wasielewski, Ong, Schaller, & Malen go.acs.org/4Q6

Differentiating Thermal Conductances at Semiconductor Nanocrystal/Ligand and Ligand/Solvent...

Abstract. Infrared-pump, electronic-probe (IPEP) spectroscopy is used to measure heat flow into and out of CdSe nanocrystals suspended in an organic solven

pubs.acs.org
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I've been a longtime user of Origin for plotting my data, but I'm wondering what #chemtwitter likes to use? MATLAB? Igor? Python? R?
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A new student who works with nanopipettes has really bad eyesight and was having trouble filling the small devices with fluids. My other student 3D printed a funnel as a X’mas present to help her 👏😭 Innovation at its finest with kindness, I’m so proud.
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Good morning twitter! I'm excited to share my newest paper from @NUChemistry in @acsnano about how synthesizing CuInSe2 nanocrystals with different ligands drastically affects their composition and photophysics! pubs.acs.org/doi/10.1021/acs…

Synthetic Ligand Selection Affects Stoichiometry, Carrier Dynamics, and Trapping in CuInSe2...

Abstract. CuInSe2 nanocrystals exhibit tunable near-infrared bandgaps that bolster utility in photovoltaic applications as well as offer potential as subst

pubs.acs.org
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Totally forgot to mention that this was done in collaboration with the amazing Korgel group (@brian_korgel @KorgelTweets) who synthesized the nanocrystals!
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Hey everyone, Prof. Mike Wasielewski and I's JACS Perspective just came out! If you want to learn about photogenerated spin-correlated radical pairs (SCRPs) then look no further. @J_A_C_S @CMQTnu (1/2) pubs.acs.org/doi/abs/10.1021…

Photogenerated Spin-Correlated Radical Pairs: From Photosynthetic Energy Transduction to Quantum...

Abstract. More than a half century ago, the NMR spectra of diamagnetic products resulting from radical pair reactions were observed to have strongly enhanc

pubs.acs.org
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In this Perspective we look at some of the history of SCRPs, from photosynthetic bacteria and CIDNP/CIDEP to their use as molecular qubits. Introduction to some of the theory, quantum teleportation, SCRPs in DNA, and much more! (2/2)
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Hey twitter! I'm defending my Ph.D. in Chemistry this week! 🤯😎👩‍🔬(Thursday at 1 pm CT to be exact). I don't know as many of you on here, but if anyone is interested in attending virtually, message me and I'll send you a zoom link.
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Okay nanocrystal community, I have a question/debate. Do you think this ligand would be bent over (closer to the surface) or forced more upright? The QDs are CdSe/CdS. This ligand and QD were used previously: pubs.acs.org/doi/abs/10.1021… but I'm using them again. Excuse my ugly pic.
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Wow! Walking up to so many responses is amazing! These ligands were not native during synthesis, but were exchanged afterwards. The NC is fairly large due to the shell (~7.7 nm diameter). 90 eq. of ligand was added though so I expect a fair amount on the surface.
Hey #chemtwitter, how do you stay motivated when you are nearing the end of a paper and are getting tired of editing your own work again and again?
We as a nanocrystal community really need to clarify whether we mean 'diameter' or 'radius' when we are talking about the size of a nanocrystal or labeling a figure. I am not going to remeasure your TEM images.😂
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Another shameless promotion since Laura isn't on Twitter, this time focused on research from the Wasielewski group @NUChemistry in @JPhysChem. This work focused on the effects that having two identical acceptors has on charge and spin dynamics. pubs.acs.org/doi/abs/10.1021…

Charge Transfer and Spin Dynamics in a Zinc Porphyrin Donor Covalently Linked to One or Two...

Abstract. Quantum coherence effects on charge transfer and spin dynamics in a system having two degenerate electron acceptors are studied using a zinc 5,10

pubs.acs.org
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A bit late, but I am excited to share two papers I'm on from the Schaller group that use time-resolved XRD to study thermal properties of nanocrystals. pubs.acs.org/doi/abs/10.1021… pubs.rsc.org/en/content/arti… @nanobrumberg is first author and gave a lovely description of both articles!

Anisotropic Transient Disordering of Colloidal, Two-Dimensional CdSe Nanoplatelets upon Optical...

Abstract. Nanoplatelets (NPLs)colloidally synthesized, spatially anisotropic, two-dimensional semiconductor quantum wellsare of int

pubs.acs.org
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I’m very excited to be presenting in this series! I’ve really enjoyed getting to see all the exciting new research on nanocrystals!
News in Nanocrystals Seminar@NiNC_Seminar9 Nov 2020
Join us this week for an exciting seminar by Aniket Mule (@AniketMule93), Samantha Harvey (@NUChemistry), and Dr. Laxmi Kishore Chiluka (@Sargent_Group). The Zoom webinar will open at 8AM PDT/11AM EST/5PM CET on Wednesday, November 11th. Register here: ninc.mit.edu
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A short sad tale: Oh I see that @nanoGe_Conf is calling for new symposia, I should make one! They say that the percentage of female speakers should be at least 20%, that shouldn't be hard Nine speakers added to the list and I haven't found one woman scientist to add Unacceptable
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The worst part is, I want to make it 50/50. I'm a woman in science and I want to boost other women. So I'll keep looking, I'm determined. I know how important representation is. I'm reminded of when I went to MRS in 2019 and was often saddened by the lack of women at the talks.
I'm excited to promote my recent @acsnano paper for the first time on Twitter! Using some lovely CuInSe2 nanocrystals from @brian_korgel's group and intense X-rays at @argonne. Looked at melting, heat dissipation, and ligand effects. pubs.acs.org/doi/10.1021/acs…

Transient Lattice Response upon Photoexcitation in CuInSe2 Nanocrystals with Organic or Inorganic...

Abstract. CuInSe2 nanocrystals offer promise for optoelectronics including thin-film photovoltaics and printed electronics. Additive manufacturing methods

pubs.acs.org
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