Tomojit Chowdhury

Materials Scientist @UChicago | he/him/his

[Tomojit Chowdhury @TomojitC]

🚀 Just out in @acsnano! We integrate a molecular array with an ultrathin semiconductor, revealing 100% anisotropic light emission in a 4-atom-thick hybrid optoelectronic platform.
#molecular2D
🙏 @BerkeleyLab @argonne @cornellccmr @ENERGY @UChiChemistry
https://t.co/w7WUhn5JGT

[Sayantan Mahapatra @smahap10]

Strain-Modified Raman Responses in Monolayer MoS2 Nanobubbles Resolved at 5 nm | The Journal of Physical Chemistry Letters https://t.co/NbSOf3Syyv

[Tomojit Chowdhury @TomojitC]

@UChiChemistry @UChicagoPSD @UChiMaterials @ScienceMagazine #JamesFranckInstitute

[The University of Chicago @UChicago]

A new transistor only four atoms thick, created by UChicago and @Argonne scientists, performs at room temperature and could unlock breakthroughs for microelectronics, computing and even our understanding of the laws of nature.

Learn more: https://t.co/6cnrxZFEiB

[Andy Jassy @ajassy]

Every cloud provider faces the same AI infrastructure challenge: chips need to be positioned close together to exchange data quickly, but they generate intense heat, creating unprecedented cooling demands.

We needed a strategic solution that allowed us to use our existing air-cooled data centers to do liquid cooling without waiting for new construction. And it needed to be rapidly deployed so we could bring customers these powerful AI capabilities while we transition towards facility-level liquid cooling.

Think of a home where only one sunny room needs AC, while the rest stays naturally cool – that’s what we wanted to achieve, allowing us to efficiently land both liquid and air-cooled racks in the same facilities with complete flexibility.

The available options weren't great. Either we could wait to build specialized liquid-cooled facilities or adopt off-the-shelf solutions that didn't scale or meet our unique needs. Neither worked for our customers, so we did what we often do at Amazon… we invented our own solution.

Our teams designed and delivered our In-Row Heat Exchanger (IRHX), which uses a direct-to-chip approach with a "cold plate" on the chips. The liquid runs through this sealed plate in a closed loop, continuously removing heat without increasing water use. This enables us to support traditional workloads and demanding AI applications in the same facilities. By 2026, our liquid-cooled capacity will grow to over 20% of our ML capacity, which is at multi-gigawatt scale today.

While liquid cooling technology itself isn't unique, our approach was. Creating something this effective that could be deployed across our 120 Availability Zones in 38 Regions was significant. Because this solution didn't exist in the market, we developed a system that enables greater liquid cooling capacity with a smaller physical footprint, while maintaining flexibility and efficiency.

Our IRHX can support a wide range of racks requiring liquid cooling, uses 9% less water than fully-air cooled sites, and offers a 20% improvement in power efficiency compared to off-the-shelf solutions. And because we invented it in-house, we can deploy it within months in any of our data centers, creating a flexible foundation to serve our customers for decades to come.

Reimagining and innovating at scale has been something Amazon has done for a long time and one of the reasons we’ve been the leader in technology infrastructure and data center invention, sustainability, and resilience. We're not done… there's still so much more to invent for customers.

[Tomojit Chowdhury @TomojitC]

@TomKempa @MooreFound Great news Tom! Go @Kempa_Group!

[Tomojit Chowdhury @TomojitC]

Congratulations @TomKempa! 🎉🍾

[Thomas J. Kempa @TomKempa]

I am so thrilled to be part of this cohort of amazing scientists. This support will catapult our efforts on proximity coupling of #MOFs to 2D crystals with the intention to exert precise control over their fundamental excitations.
#Lattice_Embossing
#Moorephysics
🙏 @MooreFound

[John Preskill @preskill]

6,100 neutral-atom qubits trapped in a grid by lasers @Caltech ... is a lot.
https://t.co/1DVEkK30ud

[Tomojit Chowdhury @TomojitC]

Now in @NanoLetters, we present inch-scale, one-atom-thick films for frequency-independent control of light polarization. Exciting times for #scalable #molecular2D #devices. Stay tuned! @argonne @cornellccmr 🙏

https://t.co/B72hd4tF9y

[Tomojit Chowdhury @TomojitC]

@TomKempa @RiceUniversity This is classic! 😂

[Tomojit Chowdhury @TomojitC]

@EveryWhereChem @AmerChemSociety Congratulations!

[Tomojit Chowdhury @TomojitC]

@MaxxSolidChem @ICHF_PAN @IOCBPrague @UCIrvine @UCIPhysSci @UCIChemistry Congrats Maxx!

[Tomojit Chowdhury @TomojitC]

@lilia_xie @PrincetonMSE @PrincetonChem Congratulations!

[Tomojit Chowdhury @TomojitC]

@chhendon Sounds like a double shot excitement, Chris!

[Tomojit Chowdhury @TomojitC]

@SarbajitBanerj1 @ETH_DCHAB @ETH_en @psich_en Congratulations! 😊

[Tomojit Chowdhury @TomojitC]

@deep29jariwala @NaturePhotonics @PennEngineers @ESEatPenn @MSEatPenn @UPennSinghNano @AFResearchLab Congrats! Great to see CNT gaining momentum again.

[Tomojit Chowdhury @TomojitC]

@MaxxSolidChem @NatureMaterials @UCIChemistry @UCIPhysSci @UCIrvine Congratulations Maxx! Beautiful work!

[Tomojit Chowdhury @TomojitC]

@TomKempa Great news! Happy for you Tom🥂

[Tomojit Chowdhury @TomojitC]

@fullCIalchemist @ACSPHYSDivision @UChiChemistry Thank you

[Tomojit Chowdhury @TomojitC]

Honored to have received the 2024 @ACSPHYSDivision Young Investigator Award! Heartfelt thanks to my mentors, collaborators, and @UChiChemistry!
#ACSaward #ACSFall2024 #ACSYIA #PHYS

[UChicago Chemistry @UChiChemistry]

We are pleased to announce that Postdoctoral Fellow Tomojit Chowdhury has won the 2024 ACS PHYS Young Investigator Award.

Read our interview with Dr Chowdhury here -
https://t.co/aTIFonhcx3

@UChicagoPSD @AmerChemSociety @TomojitC @UChicagoNews @ACSPHYSDivision @ChemistryNews

[Tomojit Chowdhury @TomojitC]

@sominpk @ACSPHYSDivision @UChiChemistry Thanks Somin, and congrats on your new position!

[Tomojit Chowdhury @TomojitC]

@yzhong97 @ACSPHYSDivision @UChiChemistry Thanks Yu!