000170102 001__ 170102
000170102 005__ 20260318155254.0
000170102 0247_ $$2doi$$a10.1039/d5ma01174d
000170102 0248_ $$2sideral$$a148636
000170102 037__ $$aART-2026-148636
000170102 041__ $$aeng
000170102 100__ $$aJavadzadeh, Mehrzad
000170102 245__ $$aDelayed crosslinking enables ultra-high-resolution melt electrowriting of responsive liquid crystal elastomers
000170102 260__ $$c2026
000170102 5060_ $$aAccess copy available to the general public$$fUnrestricted
000170102 5203_ $$aMelt electrowriting (MEW) enables the fabrication of finely structured scaffolds with sub-micrometer resolution. However, reducing the inter-fiber distance (IFD) in MEW remains challenging due to electrostatic interactions between the charged polymer jet and previously deposited fibers, often leading to fiber bridging. Recently, we demonstrated that MEW of reactive liquid crystalline inks, followed by ultraviolet (UV) photopolymerization, enables the fabrication of digitally positioned liquid crystal elastomer (LCE) structures. Building on this, we demonstrate that tuning the UV light intensity during photopolymerization significantly improves the achievable resolution range. Lower UV intensities produce smaller minimum IFDs without fiber bridging, enabling the fabrication of highly ordered structures with IFDs down to 11 µm for 5 µm-diameter fibers, a feature that, to the best of our knowledge, surpasses the smallest IFDs previously reported for MEW. We hypothesize that slower crosslinking kinetics extend the time window for charge dissipation, reducing electrostatic interactions between the jet and the previously deposited fibers. Although the mechanism remains unclear, local variations in material flow or curing-induced surface morphology may also affect electric field distribution. Beyond resolution improvements, this strategy enables defect-free fabrication of stimuli-responsive LCEs with programmable shape transformation and actuation. UV light intensity thus emerges as a critical design parameter for MEW, with implications for other photo-crosslinkable systems.
000170102 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E28-24$$9info:eu-repo/grantAgreement/ES/DGA-FSE/E15-20R$$9info:eu-repo/grantAgreement/ES/DGA-FSE/E47-20R$$9info:eu-repo/grantAgreement/EC/H2020/829010/EU/Advanced and versatile PRInting platform for the next generation of active Microfluidic dEvices/PRIME$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 829010-PRIME$$9info:eu-repo/grantAgreement/ES/ISCIII/CB06-01-00263$$9info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/MICIU/CNS2022-135887$$9info:eu-repo/grantAgreement/ES/MICIU/PID2020-118485RB-I00
000170102 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttps://creativecommons.org/licenses/by-nc/4.0/deed.es
000170102 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000170102 700__ $$aFernández-Melero, María
000170102 700__ $$0(orcid)0000-0002-5380-6863$$aBarrio, Jesús del$$uUniversidad de Zaragoza
000170102 700__ $$0(orcid)0000-0003-3900-2866$$aSánchez-Somolinos, Carlos
000170102 7102_ $$12013$$2765$$aUniversidad de Zaragoza$$bDpto. Química Orgánica$$cÁrea Química Orgánica
000170102 773__ $$g(2026), [10 pp.]$$pMater. adv.$$tMaterials Advances$$x2633-5409
000170102 8564_ $$s1978286$$uhttps://zaguan.unizar.es/record/170102/files/texto_completo.pdf$$yVersión publicada
000170102 8564_ $$s2688831$$uhttps://zaguan.unizar.es/record/170102/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000170102 909CO $$ooai:zaguan.unizar.es:170102$$particulos$$pdriver
000170102 951__ $$a2026-03-18-13:52:19
000170102 980__ $$aARTICLE