Dr. Cℏarles D. Brown II @CDBrownII Twitter profile

Last Seen Profiles

@ThelmaCabreraP2

@okrable

@natmuchinsky

@movies_ol

@bobbojr2

@MarfeusM

@augustmarkie

@DrizzyKoune

@beje_lagi

@Zakaria7744

@nijiyoyaan

@MTW61

@EliteLunar

@BomberosZGZ

@CEOBriefing

@BaderAb26378248

@PepperMoirraine

@Johnluckin

@a8u_turab

@yhn_942

@halaSyFoursan

@willdogg42

@Toebeelorebar

@AB0khalifah

@Cameron21342090

@AmyPhillips2a

@CraigStiles

@Dutch_Apex

@ABCfilmaciones

@FSAthletics

@iamBiancaRay

@deLongeMVP

@SFCsupervisor

@gisselleStoran

@Chery_saudi

@kauenitto

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

Yesterday, I successfully defended my Ph.D. In physics at Yale. Since the 1860’s, Black people have been awarded few Ph.D.’s from the Yale physics department. As far as I can tell, I am the 7th Black man to receive this degree from Yale Physics. #blackandSTEM @AcademicChatter 1/

2K

6K

47K

Dr. Cℏarles D. Brown II

@CDBrownII

4 months

Just taught my first class as a professor💪🏿

Alexandru B Georgescu 🇺🇦🌻🇷🇴

@AlexandruBG

4 months

About to teach my first class as a professor. 🎉🎉

22

36

881

184

1K

19K

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

Exciting news!!! I have accepted an offer from @Yale to work as a tenure track assistant professor of physics. @YalePhysicsDept , I will lead our group in studying various quantum physics phenomena, teach courses, and work towards addressing important social/educational issues.

228

202

4K

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

...and there have not yet been any Black women. However, I’m privileged to have known and worked with Brooke (she’s awesome, check her out), who will soon be the first Black woman. 2/

9

105

1K

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

(•_•) What if I told you... ( •_•)>⌐■-■ that despite my large size... (⌐■_■) I'm not a football player. I'm a scientist Made it 3 days in Berkeley before being asked if I'm a football player. People always want to talk to me about football but never ask what I do

37

54

1K

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

A piece that I wrote in Physics Today has just gone live. It's on both my personal experiences and those common to Black people in physics. Please read and take note. Now is the time for change. Thank you deeply to everyone who help me craft this piece. I appreciate you.

Physics Today

@PhysicsToday

4 years

Anti-Blackness is pervasive in academia, and physics is no exception. UC Berkeley physicist @CDBrownII details his experiences with interpersonal and systemic anti-Black racism and lays out actions that can start dismantling it

23

416

812

23

504

1K

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

It’s been an great journey, full of triumph and defeat. As a first generation college student I didn’t do half bad! Thanks to everyone who has supported and mentored me during my journey. I couldn’t have done it without you! @astrojohnjohn @JedidahIslerPhD @IBJIYONGI @NSBPInc

13

52

1K

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

When your experiment’s optics table has optics tables

50

98

1K

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

After receiving my PhD degree in the mail just minutes ago, being #BlackintheIvory is knowing that I can do something incredible despite all the anti-Blackness I had to deal with during my formal education. Soon, I’ll pick up where Stanford physicist Art Walker left off

38

50

936

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

If I get tapped for US Secretary of Energy one day, are ~they~ going to be like “Never mind the physics PhD, what was his Physics GRE score!?!?”

23

32

613

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

Thanks to the important friends and mentors I’ve had at Yale: Jack Harris, @Meg_Urry , Keith Baker, Paul Tipton, Suzie Forster, Maria Parente, Rona Ramos, Nick Read, Reina Maruyama, R. Shankar, Climate and Diversity Committee

6

25

523

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

After ~2 months as a Berkeley postdoc, I was trying to enter the physics building just before it auto-locked at 6 PM. While the doors were still unlocked, a white student (UG or grad, not sure) stood in the doorway and demanded to see my ID before I could enter #BlackintheIvory

7

82

499

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

Yale, it’s been real but it’s time to go! I’m taking my talents to UC Berkeley where I’ll be a postdoc working on experiments with ultracold atoms. I can’t wait to get there! #phdchat #PhDone #blackandSTEM

16

370

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

#BlackInPhysicsRollCall I'm a postdoc in the Stamper-Kurn group at @BerkeleyPhysics where I experiment with ultracold atoms in optical lattices (like the kagome lattice below) in search of new and exotic states of matter!

11

52

359

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

We've been working hard on organizing an incredible week (Oct 25-31) of celebrating those who are #BlackinPhysics , highlighting our contributions to the discipline, and supporting the community. We need EVERYBODY to follow @BlackinPhysics ! Retweet! Retweet! Retweet! Thank you!

10

261

349

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Congratulations to particle physicist, Dr. Brooke Russell, the first Black woman to ever receive a PhD from the Yale Physics department in its ~150 year history. She’s awesome. Let the world know! #BlackandSTEM #WomenInSTEM #phdchat @AcademicChatter

MicroBooNE

@Microboone

5 years

Congratulations to Brooke Russel! Recipient of the 2019 Scharff-Goldhaber Prize Ceremony and Talk, 7/3 via @BrookhavenLab

0

8

50

4

51

315

Dr. Cℏarles D. Brown II

@CDBrownII

1 year

Enchanted by science as a child, Yale physicist now probes quantum

In an interview, Yale quantum physicist Charles D. Brown II reflects on his entry into the scientific life — and his research in quantum simulation.

news.yale.edu

10

31

292

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

New faculty orientation! Life is wild

11

0

256

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

📢 #BlackinPhysicsRollCall I'm a postdoc @BerkeleyPhysics , PhD from @YalePhysicsDept , B.S. from @UMNews . I conduct experiments with ultracold atoms in lattices made of light which simulates quantum physics of solids #BlackInAMO #BlackInCM #BlackinPhysicsWeek2021 see thread🧵

3

42

217

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

@ReinaMaruyama

18

6

214

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

My man Einstein says MASK UP

2

14

176

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

If the wine isn’t quantum, I don’t want it

9

6

167

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

You tell'em Bart!

0

33

158

Dr. Cℏarles D. Brown II

@CDBrownII

4 months

STOP! Check out my awesome postdoc Dr. Cedric Wilson who just won a competitive + prestigious Yale Quantum Institute @Yale_QI postdoc fellowship!! Cedric got his PhD from MIT, where we worked out rotating quantum gasses. Now we're building a lattice expt!

5

18

137

Dr. Cℏarles D. Brown II

@CDBrownII

1 year

Lab IG:

7

16

127

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

We @BlackinPhysics have built a powerful important collection of 18 essays written by 19 Black physicists. Read them, learn from them, use them to teach, use them for Wikipedia (!), use them to grow, use them to build a better academy! Here they are in their full glory: THREAD🧵

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

Thanks to our 2022 essayists! Find their essays here: 1. 2. Find the 2020 and 2021 @PhysicsToday essays below 2020: 2021: 2020-2022 @PhysicsWorld collection:

0

13

21

6

64

125

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

Excited to share our latest work (and a first-author paper of mine) that's published in @ScienceMagazine about topological aspects of singularities in band structure Check us out!

Direct geometric probe of singularities in band structure

Rubidium atoms in a honeycomb optical lattice are driven through band structure singularities.

www.science.org

6

15

124

Dr. Cℏarles D. Brown II

@CDBrownII

4 months

@apgibson42 "Quantum and Nanoscale Physics" - an intermediate level physics elective. I get to teach students quantum for the first time...pretty cool

2

3

120

Dr. Cℏarles D. Brown II

@CDBrownII

1 year

So much exciting science happening soon!

Dr. Cℏarles D. Brown II

@CDBrownII

1 year

Big day for the Brown group @YalePhysicsDept : four approximately 1000 kg optical tables and their vibration damping systems being installed today! It's time to get to cooling and trapping atoms🥶 Watch our i*n*s*t*a*g*r*a*m account (IG: brownlab_yalephysics) for updates!

2

1

61

10

2

122

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

@eugenejohnson_ I’m currently finishing up my Ph.D. in physics at Yale. In my research, I levitate drops of superfluid helium in vacuum and try to study the quantum physics that describes the drops’ motion.

2

4

119

Dr. Cℏarles D. Brown II

@CDBrownII

1 year

We're live:

8

6

120

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Feeling cute, might diffract later...idk

2

8

119

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Such a nice Bose-Einstein condensate!

3

5

114

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

@EstOdek I’m Charles, and I am finishing up my physics Ph.D. at Yale (defending in a couple months!). I levitate superfluid liquid helium in vacuum, shine lasers on it, and study how the light inside the liquid drop interacts with its vibrations. Here is a vid of a He drop being created:

2

10

114

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

“That’s...rich coming from an astronomer...We have this entire ... theory for invisible matter and people believe it because there’s evidence of it. But when it comes to a discussion of systemic racism, if it’s not right there in front of my nose, then it doesn’t exist.”

Stephanie M. Lee

@stephaniemlee

4 years

SCOOP: On #ShutDownSTEM day, a University of Florida astronomer told his department that he didn’t believe systemic racism existed in academia, except for the “pernicious” effects of “identity politics.” He also compared the BLM protests to “street mobs.”

6

28

42

3

38

110

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

#BlackInPhysicsRollCall #BlackInPhysicsWeek2022 I’m an AMO/condensed matter physicist, I start as an asst. prof. at @YalePhysicsDept in Jan. 2023, + I’m a new member of @Yale_QI ! Quantum simulation is my jam. Check my recent work in @ScienceMagazine :

3

19

113

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

Just learned that I won the 2021-2022 @UCBerkeley Chancellor’s Awards for Civic Engagement, one of the Chancellor’s Awards for Public Service outside of my main role at @BerkeleyPhysics . I am deeply honored. And there are many more good works to come!

Chancellor's Awards Criteria for Nominations - Public Service Center

Chancellor’s Awards for Public Service Award Information The Chancellor’s Awards for Public Service honor individuals and groups for their exceptional commitment to advancing social change through...

publicservice.berkeley.edu

8

9

113

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Changing fields from PhD to PD has been a wild ride but I love it. In my subgroup's new paper, we load a Bose-Einstein condensate into a special lattice made of light, and study how atom-atom interactions affect the lattice-trapped atoms' motional energy

Interaction-Enhanced Group Velocity of Bosons in the Flat Band of...

Geometric frustration of particle motion in a kagome lattice causes the single-particle band structure to have a flat s-orbital band. We probe this band structure by exciting a Bose-Einstein...

arxiv.org

7

13

110

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

@drsusanspencer @AcademicChatter Absolutely!

2

1

100

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

Physics friends and non-physics friends, near and far: please help me advertise this incredible conference for which I have the honor to serve as Chair! The conference is all about massive systems behaving quantum mechanically. Please retweet!

8

63

98

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Listening to Lauryn Hill in the lab while changing the the laser diode in an injection lock laser #BlackinPhysics #BlackinCM #BlackinAMO #BlackinSTEM

4

9

95

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

My @PhysicsToday piece on addressing the underrepresentation of Black physicists has been adapted for the Berkeley Blog and is featured on @UCBerkeley 's main website!

1

18

92

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

LARGE THREAD re: Black physicists' representation/exp's, authors/orgs/pubs: @NaturePhysics @ScienceMagazine @PhysicsToday @APSphysics @NSBP @astrobites @IBJIYONGI @JedidahIslerPhD @iamstarnord @astroholbrook @Dr_JimGates @lauren_marietta @That_Astro_Chic @keshawnrants @astrochey

4

59

90

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

I vote that when we're out, we compliment each other's masks😷: "The way you coordinate your mask and clothes -🔥" "You look wonderful with your mask on today!" "I love the color and style of your mask!" "Bro I see you with the fresh mask on!!" "It's the mask for me!" "OK mask!"

2

18

88

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Who is Pauli, and why is he so exclusive?

Ben Osoba, Ph.D.

@phdirac

4 years

Who is Heisenberg and why is he so uncertain?

4

11

55

6

10

89

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Congrats to the Dr. Russell, the first African American woman to get her PhD in Physics at Yale! Check out to learn more about incredible Black physicists like Dr. Russell. @BerkeleyLab @NSBPInc @BlackPhysicists @BlackWomenPhDs

Brooke Russell’s journey of firsts, in physics and at Yale

Russell, the first African-American woman to earn a Yale Ph.D. in physics, discusses her research and her experiences at Yale.

news.yale.edu

1

26

87

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

WOW does anyone have as much juice as Beyonce? When you like a tweet with the hashtag #BlackIsKing the heart symbol changes to lions. Incredible!

2

1

88

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

It’s me! Quantum here, get your quantum here

NSBP, Inc.

@NSBPInc

3 years

Who is this young man right here?? The year was 2016 and NSBP was at Fermilab.

1

0

30

1

0

86

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Like when I was at UChicago for summer research. At the park after close, was cuffed/had my head slammed onto a car by cops. One unholstered his gun and was screaming. Meanwhile ~20ft away on a bench was an onlooking white couple who were kindly asked to leave after watching

rudy betrayed

@rudy_betrayed

4 years

every moment of this insane. atlanta imposed a 9 pm curfew, and at 9:30 cops swarmed this car, bashed the windows, stabbed the tires and tased the black people. all behind a car of white people violating the same curfew, smiling and waving at the camera

239

8K

17K

8

34

84

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Meet the #BlackInPhysics week organizers, courtesy of @PhysicsToday It's all the wonderful faces and work of Black physicists for me

0

28

82

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

Got it! Shout out to Prof Stamper-Kurn for supporting my physics work that happens inside and outside the lab

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

On my way to @UCBerkeley to receive the Chancellor’s Award for Civic Engagement in an all black suit on my motorcycle. Either I look ridiculous, cool, or ridiculously cool 😎

2

0

46

3

4

82

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

*Ric Flair wooooo* #BlackinPhysicsRollCall THREAD 🧵 I'm a postdoc in the Stamper-Kurn group at @BerkeleyPhysics where I experiment with ultracold atoms in optical lattices I'm co-lead of @BlackinPhysics Week and hopeful future prof! more about me here:

Wright Lab alumni spotlight on scientist and advocate Charles D.

Wright Lab alum Dr. Charles D.

wlab.yale.edu

1

25

82

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Absolutely vile. I had to check this for myself. This kind of thinking, this kind of lack of compassion, this kind of malice is not isolated. That someone feels comfortable enough to post such disgraceful content in this Facebook community says a ton about it I’m tired

6

10

79

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

Congratulations to astrophysicist @carlnotsagan for winning the Beth Brown Award for his presentation on star collapse! @AcademicChatter #NSBP2019

2

16

81

Dr. Cℏarles D. Brown II

@CDBrownII

1 year

My final paper from grad school, about magnetically levitated superfluid drops in vacuum and their optical, mechanical and thermal properties, is out in PRL! Great job team - Yiqi Wang, @MazzMaserati , Glen Harris, Mehmet Uysal, Jack Harris

Superfluid Helium Drops Levitated in High Vacuum

Millimeter-scale drops of superfluid liquid helium can be trapped indefinitely in high vacuum.

journals.aps.org

2

5

78

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

#BlackinCM #BlackinPhysics #BlackinSTEM @BlackinPhysics My #EquationOfTheDay : Gross-Pitaevskii. It has the kinetic and potential energy terms (first two) of the Schro Eq, and a 3rd density-dependent interaction term: super important for attractive bosons in a lattice (my work)!

5

12

77

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

"... Charles D. Brown II’s commentary about anti-Black racism in the physics community is one of PT’s most widely shared articles of all time on social media." Wow Happy to be in the company of @IBJIYONGI @iamstarnord @cosmojellyfish and the others on this list #BLACKandSTEM

Physics Today

@PhysicsToday

3 years

Here are this year's 10 most-read articles on Physics Today's website

0

16

44

2

15

79

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

My beautiful twitter banner is a python plot of the kagome lattice...It’s where I like to keep my atoms when they get cold. They get frustrated though.

4

0

80

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Views from the Berkeley hills. Physics has taken me to so many AMAZING places. I should come up here and do some simulations for planning out experiments🤔

5

1

77

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

Me fixing typos on my PowerPoint slides just before my talk, and the audience is watching...

3

6

76

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

💪🏾💪🏾💪🏾

12

4

77

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Me and my honey...comb lattice diffraction image of a BEC

3

2

77

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

I hadn’t yet evaporated down to a BEC in this image, but what an awesome picture of cold Rb atoms in a crossed optical dipole trap

2

3

74

Dr. Cℏarles D. Brown II

@CDBrownII

5 months

Incredibly grateful to have been awarded the Air Force Office of Scientific Research Young Investigator Program for my laboratory at @Yale @YalePhysicsDept . Excited to be working on a new ultracold atom quantum simulator experiment with my awesome team!

AFOSR

@AFOSR

5 months

For FY24, AFRL/AFOSR recognized 48 scientists and engineers for showing exceptional ability and promise for conducting basic research of military importance through the #AFOSRYIP . To view the complete list of the award-winning proposals, visit #Grants

1

4

42

4

1

73

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Are there any allies out there that would like to help with #BlackinPhysicsWeek in an incredibly important way? If so, please DM me! With a little bit of organizational work on the front end, I'm talking high yield for not too much work! + everybody follow @BlackinPhysics !

6

37

69

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

In 1st year of grad school much of my cohort lived together, so we had study groups. The group would get stuck on a problem, and when I knew how to proceed, I would tell them and be ignored. Then, someone would say the same thing and be told how clever they are #BlackintheIvory

2

5

69

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

My final grad school paper is on arXiv! Check us out! See the vid below! Shout out to Yiqi Wang (Yale), @MazzMaserati , Glen Harris @QuantumOpticsLb , Mehmet Uysal (Princeton) and Prof Jack Harris (Yale) for their awesome work Paper link:

Superfluid Helium Drops Levitated in High Vacuum

We demonstrate the trapping of millimeter-scale superfluid Helium drops in high vacuum. The drops are sufficiently isolated that they remain trapped indefinitely, cool by evaporation to 330 mK,...

arxiv.org

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

@EstOdek I’m Charles, and I am finishing up my physics Ph.D. at Yale (defending in a couple months!). I levitate superfluid liquid helium in vacuum, shine lasers on it, and study how the light inside the liquid drop interacts with its vibrations. Here is a vid of a He drop being created:

2

10

114

5

64

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

The UC Berkeley Physics Department has two openings for assistant professors: one in particle theory and the other in soft condensed matter. Here are the job ads: I hope that #BlackinPhysics physicists will apply!!

0

26

66

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

This is an important collection of essays. Whether you’re #BlackInPhysics or not, whether you’re a scientist or not, you should read and share them widely because they’re relevant to and important for your experience as a human in this society

Physics Today

@PhysicsToday

3 years

The full #BlackInPhysics Week 2021 essay series is now online. Thanks to @BlackinPhysics and the essay writers: Garrett R. Williams, Katrina Miller, Danielle H. Speller, Larry Gladney, and Gibor Basri

0

10

31

0

30

62

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

#BlackInCM #BlackInMaterials #BlackinPhysicsRollCall Back! Condensed matter at Berkeley. Co-lead of @BlackinPhysics . I make Bose-Einstein condensates at nano-K temps, diffract these matter waves from lattices, & use them to simulate quantum materials! 👀

1

19

61

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Follow the @BlackinPhysics organizers! @EGonzales788 @DrEsquivelPhD @CDBrownII @AlxndriaTH3Gr8 @n3ssa_girl4 @quarkchocho @Cicisall @That_Astro_Chic @PasseVivant @tangela_irene @CheyennePolius and Jessica Tucker on IG: jpsi532

0

27

61

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

For those who like egg sandwiches: I learned this trick from watching food videos on social media. I was surprised that it works so well! 1) eggs in hot pan, 2) bread in eggs, 3) flip after eggs set, 4) fold overhanging egg, 5) fold to join bread slices. VOILA!

2

4

61

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

I just love a beautiful PDH laser locking signal

4

5

61

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Everyone: (allies that means you too!) register for all our awesome #BlackinPhysics week professional events and Open Mic Night and Ask-A-Scientist! See the event flyers (registration links on flyers) in the thread below. For more info/registration see

Black In Physics

@BlackinPhysics

4 years

Here's a list of all of our sweet sweet #BlackInPhysics week events! First up our summary professional and social events calendars!

8

384

545

0

23

62

Dr. Cℏarles D. Brown II

@CDBrownII

1 year

Yea, but see <🙂| 🐶 |🙃> ≠ 0

the finite physicist

@FinitePhysicist

1 year

physics twitter: <🙂|🙃> = 0 💬5 🔁2 ❤️16

20

70

899

5

9

58

Dr. Cℏarles D. Brown II

@CDBrownII

1 year

Big day for the Brown group @YalePhysicsDept : four approximately 1000 kg optical tables and their vibration damping systems being installed today! It's time to get to cooling and trapping atoms🥶 Watch our i*n*s*t*a*g*r*a*m account (IG: brownlab_yalephysics) for updates!

2

1

61

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

I know when that Zoom line bling, that can only mean one thing... more meetings

2

13

58

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

@AcademicChatter I'm currently wrapping up my Ph.D. in experimental physics, and I am happy to connect with folks! Thanks for placing a spotlight on underrepresented scientists!

2

3

57

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

Just finished chairing the Gordon Research Seminar on Mechanical Systems in the Quantum Regime, a 1.5-day conference, organized by myself and Dr. Martin Koppenhoffer, on various aspects of quantum optomechanics. It went super well! Onto GRC!

1

0

57

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

Yesterday at the gym I did 20 reps at 225 lbs on bench press. Do I win the title of strongest physicist!?

4

0

55

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

What’s he building in there!? 👀

8

2

55

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

Another arXiv post! Here's my first lead-author postdoc paper on using ultracold atoms in a honeycomb lattice to study topological properties of wave function singularities! See thread for shout out to co-authors!

Direct Geometric Probe of Singularities in Band Structure

The band structure of a crystal may have points where two or more bands are degenerate in energy and where the geometry of the Bloch state manifold is singular, with consequences for material and...

arxiv.org

2

5

54

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

It's been~1 month since @PhysicsToday published my commentary on disentangling anti-Blackness from physics. While I wrote about the physics discipline, much of what I wrote applies to other disciplines, even non-STEM (e.g., philosophy). @AcademicChatter

Commentary: Disentangling anti-Blackness from physics

It’s not enough to try to be nonracist. The physics community needs to act. It can start by hiring, including, and listening to Black scientists.

pubs.aip.org

0

19

54

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

Graphene, a single atomic layer of carbon atoms arranged in a hexagon pattern, is an incredible material in part b/c it has Dirac points (DPs)! DPs are topological wavefunction singularities assoc. w/ Klein tunneling, 1/2 integer quantum Hall effect, + more SEE THREAD!

1

0

54

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

@changsbrain We make structures out of light that can trap atoms in particular arrangements (kagome lattice), then put REALLY cold atoms into these structures, then study the quantum physics of this system of atoms

3

0

51

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

Incredible @AspenPhysics colloquium from @IBJIYONGI about axion physics, which also acknowledges issues faced by Black people. I hope that everyone will go and watch the recording of her talk

1

8

53

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

One of the many fun things I did in grad school: learn how to machine. Our semester project was to build these compressed air engines from scratch. Just saying, mine clocked the fastest... This training was invaluable for building my custom cryogenic PhD experiments

10

4

53

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

A word of caution from my lab…

0

4

51

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

@EstOdek @freshprofessor has a cool STEM YouTube channel about chemistry and other science

Dr. Jonathan Tyson

Chemical biology Ph.D. with postdoctoral training in chemical engineering and bioengineering. I made content in here once upon a time and hope to get back to it in the near future!

www.youtube.com

0

14

51

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

Thanks to the organizers (cc @see_quantum ) for the invite to speak yesterday at #OpticaQuantum22 about topology & singularities in band structure. I ran into Peter Zoller at the nice conference reception and he told me that I gave a really great talk. I think I just won physics!

0

4

49

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

My 3rd semester UG (3UG) physics course had ~150 people. I got an “A” in the course. ~1 year later I applied for a dept. scholarship but needed rec letters. I went to 3UG prof’s office & asked for one. He told me that I didn’t do well enough to get one. #BlackintheIvory (THREAD)

2

8

50

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

I can’t stress enough how important/impactful it is to address underrepresentation via editing Wikipedia pages. Please help us make/edit pages for a large list of Black physicists this week. Join @BlackinPhysics and @AIP_HQ in this effort! Get more info on how to edit pages:

Black In Physics

@BlackinPhysics

3 years

Share the word about our #BHM Wikithon in partnership with @AIP_HQ happening next week, Feb. 22-26! Help us increase the visibility of Black Physicists' contributions to the community and beyond. Find out more and sign up to join us: #BlackInPhysics

0

67

74

1

20

50

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

#BlackintheIvory is being a 6th year grad student, highly active/known around campus and the dept., having won several awards recognized by the department yet having dept. admins confuse you with the one other Black grad student in residence, a 1st year, out of >100 grad students

2

3

49

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

In grad school, after asking a postdoc in my lab about a trick used in a derivation from 1 of our lab’s papers, they began to badger me w/ ?’s like “how don’t you know this”, “where did you go to college”, etc and basically shamed me for the rest of the day (1/2) #BlackintheIvory

2

5

49

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

For anyone interested in the history of physics and who was who's advisor, it turns out that Maxwell of Maxwell's equations is my 8X academic great grandfather. Perhaps then it's fitting that I did this reading of one of his poems for @theThinkingMag 's Fulcrum issue

theThinkingRepublic.com

@theThinkingMag

3 years

LISTEN, HEAR: Dr. Charles D. Brown II @CDBrownII , an experimental quantum physicist and @BlackinPhysics co-founder, reads the poem “A Problem in Dynamics” by James Clerk Maxwell in our issue #Fulcrum .

0

5

10

1

5

49

Dr. Cℏarles D. Brown II

@CDBrownII

3 years

*experimentalist @BerkeleyPhysics Check out my recent work 1) Quantum simulation experiments, studying singularities in wavefunctions 🤯: 2) Magnetically levitated drops of superfluid liquid helium🥶 for quantum experiments:

Superfluid Helium Drops Levitated in High Vacuum

We demonstrate the trapping of millimeter-scale superfluid Helium drops in high vacuum. The drops are sufficiently isolated that they remain trapped indefinitely, cool by evaporation to 330 mK,...

arxiv.org

RealScientists

@realscientists

3 years

First up, we have the amazing Dr. Charles Brown II @CDBrownII a co-founder of Black In Physics and also a theoretical physicist at UC Berkeley.

1

17

0

5

48

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

. @MCHammer your sci comm efforts are amazing! Now, how do we get Viacom and @BET to produce a fun and gripping science show featuring Black people in science? I know a lot of Black scientists that would be excellent for this!! I know non-scientist Black people would love this!!

2

7

44

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

I do quantum simulation experiments that aim to simulate physics in solid state materials. That could either be by studying how bosons behave in an optical kagome lattice or honeycomb (graphene) lattice #BlackinCM #BlackInPhysics #BlackinSTEM (+see PRL)

Interaction-Enhanced Group Velocity of Bosons in the Flat Band of...

Geometric frustration of particle motion in a kagome lattice causes the single-particle band structure to have a flat s-orbital band. We probe this band structure by exciting a Bose-Einstein...

arxiv.org

Dr. Cℏarles D. Brown II

@CDBrownII

4 years

#BlackInPhysicsRollCall I'm a postdoc in the Stamper-Kurn group at @BerkeleyPhysics where I experiment with ultracold atoms in optical lattices (like the kagome lattice below) in search of new and exotic states of matter!

11

52

359

2

8

46

Dr. Cℏarles D. Brown II

@CDBrownII

5 years

Black physicists for the win. Check us out. Thanks for the incredible keynote talk and photo by @JulieLarkin305 @ProfTSearles @evianglass1 @DorianBohler @sbastianvalmont #NSBP2019 @NSBPInc

0

9

44

Dr. Cℏarles D. Brown II

@CDBrownII

2 years

On my way to @UCBerkeley to receive the Chancellor’s Award for Civic Engagement in an all black suit on my motorcycle. Either I look ridiculous, cool, or ridiculously cool 😎

2

0

46