Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System
Microfabrication using nano‐ to micron‐sized building blocks holds a great potential for applications in next‐generation electronics, optoelectronics, and advanced materials. However, traditional methods like chemical vapor deposition and molecular beam epitaxy require highly controlled environments...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-05-01
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| Series: | Advanced Photonics Research |
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| Online Access: | https://doi.org/10.1002/adpr.202500003 |
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| author | Krishangi Krishna Jieliyue Sun Wenyu Liu Robert H. Hurt Kimani C. Toussaint Jr. |
| author_facet | Krishangi Krishna Jieliyue Sun Wenyu Liu Robert H. Hurt Kimani C. Toussaint Jr. |
| author_sort | Krishangi Krishna |
| collection | DOAJ |
| description | Microfabrication using nano‐ to micron‐sized building blocks holds a great potential for applications in next‐generation electronics, optoelectronics, and advanced materials. However, traditional methods like chemical vapor deposition and molecular beam epitaxy require highly controlled environments and specialized equipment, limiting scalability and precision. To address these challenges, a single‐laser platform is presented for selective tweezing and immobilization of colloids (STIC) that integrates particle manipulation, assembly, and stabilization in one system. STIC utilizes a femtosecond laser at ultra‐low power for precise, contact‐free optical manipulation of colloids without material damage. At higher power, the same laser enables two‐photon polymerization (TPP) to immobilize colloids securely in their intended positions. Using STIC, the assembly of 3D structures from dielectric beads to patterned arrangements of transition metal dichalcogenides (TMDs e.g., MoS2) is demonstrated. Also a TPP‐fabricated handle as an intermediate support is incorporated which significantly enhances the optical tweezing efficiency of TMDs. The single‐laser design eliminates the need for dual‐laser systems, simplifying optical alignment, reducing heat damage, and improving efficiency. Additionally, it is shown that STIC supports direct multiphoton imaging for in situ inspection during fabrication. This work establishes a versatile, scalable optical platform for high‐precision microstructure fabrication, offering a pathway to overcome current limitations in micro‐ and nanomanufacturing. |
| format | Article |
| id | doaj-art-5c17db52cc204a828acd805787fbb49b |
| institution | OA Journals |
| issn | 2699-9293 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj-art-5c17db52cc204a828acd805787fbb49b2025-08-20T01:48:34ZengWiley-VCHAdvanced Photonics Research2699-92932025-05-0165n/an/a10.1002/adpr.202500003Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated SystemKrishangi Krishna0Jieliyue Sun1Wenyu Liu2Robert H. Hurt3Kimani C. Toussaint Jr.4PROBE Lab School of Engineering Brown University Providence RI 02912 USAPROBE Lab School of Engineering Brown University Providence RI 02912 USAPROBE Lab School of Engineering Brown University Providence RI 02912 USALaboratory for Environmental and Health Nanoscience School of Engineering Providence RI 02912 USAPROBE Lab School of Engineering Brown University Providence RI 02912 USAMicrofabrication using nano‐ to micron‐sized building blocks holds a great potential for applications in next‐generation electronics, optoelectronics, and advanced materials. However, traditional methods like chemical vapor deposition and molecular beam epitaxy require highly controlled environments and specialized equipment, limiting scalability and precision. To address these challenges, a single‐laser platform is presented for selective tweezing and immobilization of colloids (STIC) that integrates particle manipulation, assembly, and stabilization in one system. STIC utilizes a femtosecond laser at ultra‐low power for precise, contact‐free optical manipulation of colloids without material damage. At higher power, the same laser enables two‐photon polymerization (TPP) to immobilize colloids securely in their intended positions. Using STIC, the assembly of 3D structures from dielectric beads to patterned arrangements of transition metal dichalcogenides (TMDs e.g., MoS2) is demonstrated. Also a TPP‐fabricated handle as an intermediate support is incorporated which significantly enhances the optical tweezing efficiency of TMDs. The single‐laser design eliminates the need for dual‐laser systems, simplifying optical alignment, reducing heat damage, and improving efficiency. Additionally, it is shown that STIC supports direct multiphoton imaging for in situ inspection during fabrication. This work establishes a versatile, scalable optical platform for high‐precision microstructure fabrication, offering a pathway to overcome current limitations in micro‐ and nanomanufacturing.https://doi.org/10.1002/adpr.202500003microfabricationoptical tweezerstwo‐dimensional materialstwo‐photon polymerization |
| spellingShingle | Krishangi Krishna Jieliyue Sun Wenyu Liu Robert H. Hurt Kimani C. Toussaint Jr. Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System Advanced Photonics Research microfabrication optical tweezers two‐dimensional materials two‐photon polymerization |
| title | Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System |
| title_full | Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System |
| title_fullStr | Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System |
| title_full_unstemmed | Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System |
| title_short | Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System |
| title_sort | harnessing ultrafast optical pulses for 3d microfabrication by selective tweezing and immobilization of colloidal particles in an integrated system |
| topic | microfabrication optical tweezers two‐dimensional materials two‐photon polymerization |
| url | https://doi.org/10.1002/adpr.202500003 |
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