Temperature and pH responsive 3D printed scaffolds

Dutta, Sujan; Cohn, Daniel

doi:10.1039/c7tb02368e

Cited by 94 publications

(58 citation statements)

References 32 publications

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“…For Case C, the sensitivity in the SFDM model is extremely weak as compared to that in the simplified model due to the destructive interference between the SM Higgs boson and the singlet scalar, which were largely ignored in theoretical and experimental papers except in Refs. [17,26,27,31,39,40,55]. For Case D, the upper limit in the SFDM model is better than that in the simplified model in the region of m h 2 300 GeV and becomes opposite for m h 2 300 GeV.…”

Section: Discussionmentioning

confidence: 84%

“…(3.1). Effects of these two scalar propagators have been studied in the context of characterizing the mass and the spin of the Higgs portal scalar, fermion and vector DM at the ILC [39,40] and at the LHC and 100 TeV pp collider [17].…”

Section: Discussionmentioning

confidence: 99%

“…Then, DM can be searched through the mono-jet signature [11,12] with the top quark in the loop or through the production in association with top quark(s). Although the process of DM in association with a top quark pair or single top quark has a small production cross section, it can provide cleaner signals and more information on the nature of DM and the interaction form and has been studied extensively in the literature [2,10,[13][14][15][16][17]. Especially, in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…In fact, recent experimental results at the LHC [18][19][20][21] already show that the tt + / E T channel has a comparable sensitivity with the mono-jet channel. Moreover, the shapes of angular separations between the two leptons from top quark decays are found to be not only useful in resolving the coupling among the mediator and SM quark [2,15,16] but also helpful in distinguishing DM spins [17].…”

Section: Introductionmentioning

confidence: 99%

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Impact of the 125 GeV Higgs boson on singlet fermion dark matter searches at the LHC

2018

Phys. Rev. D

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The search for singlet fermion dark matter at high-energy colliders is commonly analyzed with a singlet scalar mediator, which however violates the standard model (SM) gauge invariance, renormalizability and unitarity. These problems can be cured by introducing a mixing between the singlet scalar s and the SM Higgs boson h. Thus one has to consider two scalar mediators h 1 and h 2 , where h 1 is identified as the discovered 125 GeV Higgs boson. As a specific example, we consider the dark matter (DM) search in the tt + / E T channel. According to the masses of dark matter and two scalar mediators, we classify the process into four cases. By investigating the total cross sections and differential distributions, we find that the contribution of the 125 GeV Higgs boson h 1 cannot be neglected in all cases and can even dominate once h 1 is on-shell in dark matter production. Further, we study the impact of h 1 on the LHC bounds of dark matter searches in the hadronic and semileptonic channels with the integrated luminosity of 36 fb −1 . Finally we make a brief comment that h 1 should be also considered in the vector DM search at high-energy colliders.

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Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of the 125 GeV Higgs boson on singlet fermion dark matter searches at the LHC

2018

Phys. Rev. D

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“…[12][13][14][15][16] One shortcoming of photopolymerization-based 3D techniques is production of "dead" materials, due to the use of nonliving free radical polymerization. 17,18 Although 3D printed shape memory polymers are capable of evolving their shape and property with time in response to an external stimulus, [19][20][21][22][23][24][25][26][27] directly linking new polymers covalently from the surface of 3D printouts has not been achievable.…”

Section: Introductionmentioning

confidence: 99%

PET-RAFT Facilitated 3D Printing of Polymeric Materials

Bagheri

Bainbridge²,

Engel³

et al. 2019

Preprint

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Photopolymerization-based 3D printing process is typically conducted using nonliving free radical polymerization, which leads to fabrication of immutable materials. An alternative 3D printing of polymeric materials using trithiocarbonate (TTC) reversible addition-fragmentation chain transfer (RAFT) agents has always been a challenge for material and polymer scientists. Herein we report the first 3D printing of RAFT-based formulations that can be conducted fully open to air using standard digital light processing (DLP) 3D printer and under mild conditions of visible light at blue (λ max = 483 nm, 4.16 mW/cm2) or green (λ max = 532 nm, 0.48 mW/cm2) wavelength. Our approach is based on activation of TTC RAFT agents using eosin Y (EY) as a photoinduced electron-transfer (PET) catalyst in the presence of a reducing agent (tertiary amine), which facilitated oxygen tolerant 3D printing process via a reductive PET initiation mechanism. Re-activation of the TTCs present within the polymer networks enables post-printing monomer insertion into the outer layers of an already printed dormant object under second RAFT process, which provides a new pathway to design a more complex 3D printing. To our best knowledge, this is the first example of open-to-air PET-RAFT facilitated 3D printing of polymeric materials. We believe that our strategy is a significant step forward in the field of 3D printing.

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