David Rinaldi

6 Questions 3 Answers 0 Followers

Questions related from David Rinaldi

How does an electron, a hole, and an exciton have a Bohr radius?

I've been seeing this everywhere. From (http://pubs.acs.org/doi/abs/10.1021/nl025785g) "In PbSe, the electron, hole, and exciton Bohr radii are 23, 23, and 46 nm, respectively. " Now I...

08 April 2016 3,354 2 View

What are the lowest wavelengths quantum dots can absorb?

I am trying to understand how well the light spectrum is currently absorbed by different types of quantum dots. I understand their band gaps can be altered but different material and material...

08 November 2015 1,336 1 View

How small can PbSe nanoparticles be made?

I have documentation that under a certain conditions PbSe nc's can be made 3-5nm by ways of growth time 5 min, injection temp: 150 C, and growth temp: 115 C. To make my particles smaller, should I...

08 October 2015 1,983 2 View

How would PbSe nanocrystals be effected by a magnetic field?

Assuming these NC's were about 7-20nm in diameter and capped with OA ligands. Pb has a weak response and Se is diamagnetic. I have read studies about these NC quantum dots in high magnetic fields...

15 July 2015 407 3 View

Has anyone grown nanocrystals without capping ligands using just growth time to stop NC growth?

I've read that usually capping ligands help stabilize the NC's and mediate their growth, I was just curious to the ranges in size and geometries/crystallography of any NC grown without any of...

18 February 2015 2,522 2 View

Using ginput() in MATLAB on a specific figure without an axis in MATLAB?

When using ginput a blank figure first appears and then an axis is created. I would like to have a code in which a blank figure will appear and a user can click multiple times in multiple places...

02 February 2015 4,413 2 View