N-gated Hacker NewsNov 10
👓 Ah, the thrill of zero-point motion in crystals—because apparently, #physicists ran out of exciting things to study. ⚛️ Watch as they spend countless hours squinting through microscopes at #nanocrystals that glow just enough to make you wish you were reading literally anything else. 💡
https://physics.aps.org/articles/v18/178 #zeroPointMotion #research #scienceHumor #microscopy #HackerNews #ngated
Zeroing In on Zero-Point Motion Inside a Crystal

A nanocrystal cooled to near absolute zero produces an unexpected light emission, which is shown to arise from quantum fluctuations in the crystal’s atomic lattice.

Physics
Show threadIngvar SantryAug 15, 2025
This is the strongest known biomaterial! Its foundation is ordinary chitin, combined with iron oxide nanocrystals. Researchers recently recreated limpet teeth artificially and are scaling up production. Potential applications: bulletproof vests, durable plastic alternatives! #Biomaterials #Innovation #Chitin #Nanocrystals #FutureTech #Engineering
Recreate limpet teeth artificially: https://www.technologyreview.com/2023/10/25/1081578/limpet-teeth-natures-strongest-material-lab-biotechnology/
The quest to re-create nature’s strongest material

Material inspired by limpet teeth could perform as well as the toughest manmade materials, or better.

MIT Technology Review
Beilstein-InstitutFeb 3, 2025

📢 We are glad to welcome our new #BJNANO #AssociateEditor Yohann Corvis, Université Paris Cité 🇫🇷!
He is an expert in the research on raw pharmaceutical materials including the development of #nanomedicines for anesthetic, #antitumor, and anti-inflammatory treatments, with an emphasis on #nanocrystals.

Welcome aboard Yohann!
🔗 https://www.beilstein-journals.org/bjnano/news/4GJ3JEKNEPH476ZOZEENE3LTIM?M=y

#BJNANO 💎🔓

BJNANO - New Associate Editor for the <em>Beilstein Journal of Nanotechnology</em>

New Associate Editor for the <em>Beilstein Journal of Nanotechnology</em>

Beilstein-InstitutJul 1, 2024
There is still time to submit your latest research to the thematic issue “#QuantumDots: from colloidal #nanocrystals to functional solids & devices” ed. by Loredana Protesescu, Maria A. Loi, Wolfgang Heiss & Quinten Akkerman.
🔗 https://www.beilstein-journals.org/bjnano/series/111?M=y
Submission deadline: 📅 July 31, 2024
#BJNANO #DiamondOpenAccess 💎 🔓
Quantum dots: from colloidal nanocrystals to functional solids and devices

Beilstein Journal of Nanotechnology

Knowledge ZoneFeb 19, 2024

#KnowledgeByte: Quantum dots (QDs) are semiconductor #Nanocrystals that are a few nanometers in size. They are a key topic in materials science and #Nanotechnology.

Quantum Dot Solar Cells are being called "The Next Big Thing in Photovoltaics".

https://knowledgezone.co.in/posts/Quantum-Dot-65cdd46615315b392535d3fe

Quantum Dot

Quantum dots (QDs) are semiconductor nanocrystals that are a few nanometers in size. They are a key topic in materials science and nanotechnology.

Knowledge Zone
Beilstein-InstitutJan 23, 2024

Submit your latest research to the 🆕thematic issue “#QuantumDots: from colloidal #nanocrystals to functional solids & devices” ed. by Loredana Protesescu, Maria A. Loi, Wolfgang Heiss & Quinten Akkerman.

🔗 https://www.beilstein-journals.org/bjnano/series/111?M=y
Submission deadline: 📅 July 31, 2024

#BJNANO #DiamondOpenAccess 💎 🔓

Quantum dots: from colloidal nanocrystals to functional solids and devices

Beilstein Journal of Nanotechnology

Delia MillironJan 31, 2023

For a belated #introduction, posts are mostly about #science of #colloidal #nanocrystals and related topics in #chemistry and #plasmonic materials. Interests in #cleantech and soft materials, as well.
#chemiverse

Occasional fun posts about #dogs, #cooking, and #nature.

Delia MillironJan 30, 2023

Placing tin #dopants selectively in the core or shell region of #plasmonic indium oxide #colloidal #nanocrystals controls not only dual-band spectral features, but also the strong spectral modulation and near-field modulation when electrons are added by chemical reduction.

From recent group members Bharat Tandon and Stephen Gibbs, plus stand-out undergrad researcher Christopher Dean (Texas ChE).
#chemiverse

https://pubs.acs.org/doi/10.1021/acs.nanolett.2c04199

Dmitry BaranovDec 22, 2022

#Perovskite #nanocrystals taught us many interesting lessons over the past few years. One of them is a superlattice X-ray interference (multilayer diffraction).

In the recently published Accounts we discuss the origins and uses of that effect in the context of perovskites as well as other nanocrystal superlattices and colloidal layered materials.

“Collective Diffraction Effects in Perovskite Nanocrystal Superlattices”

https://pubs.acs.org/doi/10.1021/acs.accounts.2c00613

Delia MillironDec 19, 2022

Why are there big discrepancies when counting electrons in #plasmonic #nanocrystals by spectroscopic analysis vs oxidative titration?
New on #ChemRxiv led by Sofia Shubert-Zuleta @[email protected]#TexasChE #UTChemistry

https://chemrxiv.org/engage/chemrxiv/article-details/63979235e6f9a198eb375bb5

How to Quantify Electrons in Plasmonic Colloidal Metal Oxide Nanocrystals

Distinct from noble metal nanoparticles, doped metal oxide nanocrystals (NCs) exhibit localized surface plasmon resonance (LSPR) in the infrared region that can be tuned by changing the free electron concentration through both synthetic and post-synthetic doping. Redox reagents have commonly been used to post-synthetically modulate the LSPR, but to understand the relationship between the electron transfer processes and the resulting optical changes, it is imperative to quantify electrons in the NCs. Titration and LSPR peak fitting analysis are the most common methods used for quantifying electrons; however, comparison between these methods has previously revealed discrepancies up to an order of magnitude without a clear explanation. Here, we apply these electron quantification techniques concurrently to Sn-doped In2O3 NCs with varying size, doping concentration, and extent of post-synthetic reduction. We find that oxidative titration consistently overestimates the number of electrons per NC, owing to the failure of the assumed stoichiometric equivalence between moles of oxidant added and moles of free electrons extracted from the NCs. The NC characteristics we examine strongly influence the driving force for the oxidation process, affecting the relative agreement between oxidative titration and LSPR fitting; the two methods more closely agree when the electron transfer driving force is larger. Overall, these analyses inform best practices for quantifying electrons in plasmonic semiconductor NCs and reveal how accuracy is affected by NC characteristics.

ChemRxiv