Martí Checa (@mcheca7) header
Martí Checa (@mcheca7) profile picture

Martí Checa

@mcheca7

Nanoscientist and sports lover. SPM postdoc at Oak Ridge National Lab

 Knoxville, TN
ornl.gov/staff-profile/marti-checa-nualart
Joined September 2012
  • Tweets111
  • Following626
  • Followers139
I am excited to share with you our recent work published today in @NatureNano, where we developed a novel nanolithography method that enables the generation and in-situ readout of a myriad of nanometric topological ferroelectric structures. nature.com/articles/s41565-0… @ORNL
1
3
21
997
The process is automated and highly tunable allowing for multiple structures to be generated, edited, read and erased at a fast pace. Contact me if you want to try it out in your samples at [email protected]
1
73
Evolution of Ferroelectric Properties in SmxBi1–xFeO3 via Automated Piezoresponse Force Microscopy across combinatorial spread libraries | ACS Nano pubs.acs.org/doi/10.1021/acs…
Evolution of Ferroelectric Properties in SmxBi1–xFeO3 via Automated Piezoresponse Force Microscopy...

Evolution of Ferroelectric Properties in SmxBi1–xFeO3 via Automated Piezoresponse Force Microscopy...

Abstract. Combinatorial spread libraries offer an approach to explore the evolution of material properties over broad concentration, temperature, and growt

pubs.acs.org
1
6
460
Great new work by @Yongtao_Liu @mcheca7 and Rama K Vasudevan @ORNL @ORNL_PhysSci @ORNLComputing -'Synergizing human expertise and #AI efficiency with #languagemodel for #microscopy.....'- iopscience.iop.org/article/1… #machinelearning #imaging #materials #LLMs #automation #nanoscience
Image from Machine Learning: Science and Technology (@MLSTjournal)
2
6
803
New functional AFM method available at @ORNL : KPFM at >3fps 🏃 Reach out if you would like to play with it! nature.com/articles/s41467-0…
High-speed mapping of surface charge dynamics using sparse scanning Kelvin probe force microscopy

High-speed mapping of surface charge dynamics using sparse scanning Kelvin probe force microscopy

Nature Communications - Dynamic mapping of charge motion across multiple length- and timescales is essential for understanding a variety of phenomena. Here, the authors introduce sparse scanning...

nature.com
1
2
15
1,112
Congratulations to @RMillanSol for his PhD thesis defense!.🧑‍🎓 @GomilaIBECLab @IBECBarcelona @UniBarcelona
Image from IBEC Nanobioelec Lab (@GomilaIBECLab)
Image from IBEC Nanobioelec Lab (@GomilaIBECLab)
1
4
216
Beautiful day in the Bay Area – at Buena Vista, CA
Image from Martí Checa (@mcheca7)
1
4
284
– at Buena Vista, CA
Image from Martí Checa (@mcheca7)
1
4
114
!! Check out the recently published article 'Automated piezoresponse force microscopy domain tracking during fast thermally stimulated phase transition in CuInP2S6' M Checa et al. iopscience.iop.org/article/1…… published in #Nanotechnology @IOPPublishing @mcheca7 @ORNL
Image from IOPmaterials (@IOPmaterials)
2
6
512
Do you want to know how to track drifting ferroelectric domains at the nanoscale in an automated and fast manner? At @ORNL, we have used fast sparse scanning in combination with compressed sensing image reconstruction to achieve it. Check it out! iopscience.iop.org/article/1…
Automated piezoresponse force microscopy domain tracking during fast thermally stimulated phase...

Automated piezoresponse force microscopy domain tracking during fast thermally stimulated phase...

Automated piezoresponse force microscopy domain tracking during fast thermally stimulated phase transition in CuInP2S6 * , Checa, M, Kelley, K P, Vasudevan, R, Collins, L, Jesse, S

iopscience.iop.org
1
120
Here you have our 2 last papers at @ORNL in collaboration with @PennStateMRI studying: 1. The influence of doping and thickness on domain wall avalanches in lead zirconate titanate: aip.scitation.org/doi/10.106… and...
Influence of doping and thickness on domain avalanches in lead zirconate titanate thin films

Influence of doping and thickness on domain avalanches in lead zirconate titanate thin films

In undoped lead zirconate titanate films of 1–2 μm thick, domain walls move in clusters with a correlation length of approximately 0.5–2 μm. Band excitation pie

pubs.aip.org
1
3
13
1,385
2. The domain wall motion across microstructural features: sciencedirect.com/science/ar…
1
2
205
My first #MRS is finished, I enjoyed the scientific talks and discussions and fell in love with the city of Boston! See you soon🙋‍♂️ – at Boston, MA
Image from Martí Checa (@mcheca7)
1
15
Very interrsting talks in the 1st day at #F22MRS! Come to my talk about electrical mapping with spm tomorrow in the 2nd floor of the Sheraton hotel! Hope to see you there :) – at Back Bay, Boston
Image from Martí Checa (@mcheca7)
1
7
Trabajo en un laboratorio de nanotecnologia americano y usando un microscopio de fuerzas atomicas, acabo de hacer el escudo del @RealBetis mas pequeño (en tamaño) de la historia: 5 micras hace (es decir: 0.005 milimetros). Un saludo a todos los Beticos desde Estados Unidos!
Image from Martí Checa (@mcheca7)
3
3
19
In our new paper, we have used SPM to study CIPS/IPS heterostructures @ORNL @IBECBarcelona pubs.acs.org/doi/full/10.102…
Revealing Fast Cu-Ion Transport and Enhanced Conductivity at the CuInP2S6–In4/3P2S6 Heterointerface

Revealing Fast Cu-Ion Transport and Enhanced Conductivity at the CuInP2S6–In4/3P2S6 Heterointerface

Abstract. Van der Waals layered ferroelectrics, such as CuInP2S6 (CIPS), offer a versatile platform for miniaturization of ferroelectric device technologie

pubs.acs.org
2
3
11
1. We reveal a measurable electromechanical response in CIPS at the paraelectric state. 2. We map the local dielectric response along the ferro/para phase tranisition. 3. We discover an enhanced conductivity at the CIPS/IPS interface.
The second article of my postodc at @ORNL is out! We combined unsupervised learning with multimodal microscopies to unravel phase-specific phononic modes in CIPS/IPS 💪 aip.scitation.org/doi/10.106…
12
Trying to use #AFM for #energyreseach? Here you have our new book chapter on EFM and KPFM modes for it! :) @ORNL taylorfrancis.com/chapters/e…
6
Happy to know the first paper from my postdoc at @ORNL is out! Thanks to all the group and specially to my mentor Liam :) Stay tuned... cause more will come! aip.scitation.org/doi/10.106…
1
16
In the paper we present an advanced SPM aproach for simultaneous mapping surface potential, dielectric and piezoelectric properties on the nanoscale... and show its capabilities on CuInP2S6 van der Waals layered ferroelectric :)
2
Load more