Volumetric Shaping of Nanoparticle-DNA Crystals by Light-Induced Milling
- Univ. of Warsaw (Poland)
- Columbia Univ., New York, NY (United States)
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Columbia Univ., New York, NY (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Institute of Basic Science (IBS), Seoul (Korea, Republic of)
DNA-programmable self-assembly enables the formation of nanoparticle crystals with controlled lattice symmetry. While this approach offers the formation of complexly ordered nanostructures for optical, mechanical, and biological applications, a mesoscale control over such nanomaterials is limited. Directing the material formation process through the assembly pathway or external fields allows for modulating crystal morphology, but achieving arbitrary morphology remains challenging. Here, we present a photothermal method for shaping 3D DNA-programmable crystals of gold nanoparticles. Through local heating of nanoparticles due to plasmonic light absorption, we induce targeted volumetric dissolution of specifically defined crystal areas with micron-scale accuracy. This technique effectively prescribes crystal shaping and creates arbitrarily shaped voids within crystals. We further investigate both computationally and experimentally the key factors governing volumetric material subtraction. The developed automated light-milling platform enables the fabrication of nanomaterials exhibiting both DNA-programmable nanoscale order and custom-designed mesoscale architecture.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- National Science Centre of Poland (NCN); US Army Research Office (ARO); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- Grant/Contract Number:
- SC0008772; SC0012704
- OSTI ID:
- 2587331
- Report Number(s):
- BNL--228840-2025-JAAM
- Journal Information:
- Nano Letters, Journal Name: Nano Letters Journal Issue: 34 Vol. 25; ISSN 1530-6992; ISSN 1530-6984
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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