Plasmonics, Tracking and Manipulating, and Living Cells: general discussion

Cordes, Thorben; Moerner, W. E.; Orrit, Michel; Sekatskii, S. K.; Faez, Sanli; Borri, Paola; Goswami, Himangshu Prabal; Clark, Alex S.; El‐Khoury, Patrick Z.; Mayr, Sandra; Mika, Jacek T.; Lyu, Guowei; Cross, Daniel; Balzarotti, Francisco; Langbein, Wolfgang Werner; Sandoghdar, Vahid; Michaelis, Jens; Chowdhury, Arindam; Meixner, Alfred J.; Hulst, Niek van; Lounis, Brahim; Stefani, Fernando D.; Cichos, Frank; Dahan, Maxime; Novotny, Lukas; Leake, Mark C.; Yang, Frsc Haw

doi:10.1039/c5fd90093j

Cited by 10 publications

(11 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The strength of the resulting torque depends on how asymmetric a given particle is with respect to (xz) and its sign on the initial orientation of the particle. Note that the possibility of chiral Janus particle produced by coating imperfection has been mentioned in the literature [22].…”

Section: B Rotationsmentioning

confidence: 96%

See 1 more Smart Citation

Optimal run-and-tumble–based transportation of a Janus particle with active steering

Mano

Delfau

Iwasawa

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

The authors wish to note the following: "We wish to acknowledge that during the writing of our manuscript we had access to an unpublished preprint from the Princeton group of H. Yang and coauthors, which similarly dealt with the theory of feedback control of Janus particles based on optically heated self-thermophoretic motion of Janus particles (photon nudging).* Through the state-of-the-art realization of 3D control, they analyzed the statistics and traveling time for a hot microswimmer in light of the optimal strategy for run-and-tumble motion of Escherichia coli. They developed a rigorous theory for evaluating on-time (self-propulsion period) and off-time (rotational diffusion period) distributions by making use of the first-passage time distribution (FPTD), which agreed with exponential tails known in biology. The optimum acceptance angle for self-propulsion was determined as 90 degrees for photon nudging, similar to the prediction for the optimal chemotactic strategy for E. coli (27). The same paper (27) hinted to us to use the probability distribution function with absorbing boundary conditions in solving the heat (diffusion) equation. The solution can be found in Selmke's paper* and our paper, as well as Zauderer's book (25). However, the normalization factor, which is necessary to compare the theory and the simulation, cannot be found to the best of our knowledge except for in our paper. FPTD is used to formulate the exact solution of the average displacement during active Brownian motion (ABM) in our paper, while in Selmke's paper,* it is used either to obtain exponential tails in on-time/offtime distribution or to obtain an asymptotic form to conclude the optimal acceptance angle to be 90 degrees. Our results revealed that the optimal angle varies from 0 to 90 degrees depending on signal to noise ratio for the deterministic feedback. Therefore, the usages and conclusions are very different."Accordingly, we wish to add the following text on page 1 in the right column: 'Researchers have been inspired by chemotactic behaviors of microorganisms and implemented such functions to self-propelled particles (11, 12, 34) for targeting their motion. Run-and-tumble is a well-known strategy for tactic behavior of E. coli, and it has been thoroughly compared with ABM of self-propelled particles from the view point of statistical mechanics (35)(36)(37)(38). The concept of run-and-tumble has been applied to Janus particles (13). The optimization of the run-andtumble algorithm for controlling microswimmers has been carried out rigorously using a first-passage time approach (Selmke et al., unpublished*).' "We apologize for the oversight in removing the reference to Selmke et al., which had been included in an earlier version of the paper. The reference was deleted because PNAS does not allow citations to unpublished work." Published under the PNAS license.www.pnas.org/cgi

show abstract

Section: B Rotationsmentioning

confidence: 96%

“…) Strictly speaking, this expression diverges at τ = 0 but the system of Langevin Eqs. [22] is actually only valid at times greater than the typical collision time of the heat bath. We can thus neglect the first term.…”

Section: Langevin Description and Autocorrelation Functionmentioning

confidence: 99%

Optimal run-and-tumble–based transportation of a Janus particle with active steering

Mano

Delfau

Iwasawa

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

show abstract

“…The main applications of itaconic acid (2-Methylidenebutanedioic acid) are in medicine, the chemical industry, agriculture, and the industrial production of acrylic acid, resin plastics, latex, acrylate, slush powder, and anti-scaling agents [90][91][92][93]. Production of IA was investigated by the biotransformation from WB hydrolysate.…”

Section: Other Acids Production Utilizing Wb As a Sourcementioning

confidence: 99%

A Sight to Wheat Bran: High Value-Added Products

et al. 2019

View full text Add to dashboard Cite

Recently more consideration has been given to the use of renewable materials and agricultural residues. Wheat production is increasing yearly and correspondingly, the volume of by-products from the wheat process is increasing, as well. It is important to find the use of the residuals for higher value-added products, and not just for the food industry or animal feed purposes as it is happening now. Agricultural residue of the roller milled wheat grain is a wheat bran description. The low-cost of wheat bran and its composition assortment provides a good source of substrate for various enzymes and organic acids production and other biotechnological applications. The main purpose of this review article is to look into recent trends, developments, and applications of wheat bran.

show abstract

“…2,11,12,13 Nonetheless, other than a few attempts over the past decade that are summarized in a recent review, 13 liquid-phase TERS measurements are scarce. This is somewhat surprising, as many catalytic, electrochemical, as well as biological processes 14 of general interest naturally occur at solid-liquid interfaces. 13 The first attempt at performing TERS-based characterization of a solid-liquid interface appeared a decade ago.…”

Section: Introductionmentioning

confidence: 99%

Taking the Plunge: Nanoscale Chemical Imaging of Functionalized Gold Triangles in H₂O via TERS

et al. 2019

View full text Add to dashboard Cite

We demonstrate fast (0.25 s/pixel) nanoscale chemical imaging in aqueous solution via tipenhanced Raman scattering (TERS), with sub-15 nm spatial resolution. The substrate consists of 4-mercaptobenzonitrile-functionalized monocrystalline gold triangular platelets immersed in H2O, which we map using a gold-coated AFM probe illuminated using a 633 nm laser source. We find that the recorded TERS images trace the enhanced local optical fields that are sustained towards the edges and corners of the triangles. In effect, we directly map local optical fields of a plasmonic substrate in aqueous solution through molecular TERS. Overall, our described platform and approach may generally be used for chemical and biological imaging, and potentially, to follow chemical transformations at solid-liquid interfaces through TERS.

show abstract

Plasmonics, Tracking and Manipulating, and Living Cells: general discussion

Cited by 10 publications

References 6 publications

Optimal run-and-tumble–based transportation of a Janus particle with active steering

Optimal run-and-tumble–based transportation of a Janus particle with active steering

A Sight to Wheat Bran: High Value-Added Products

Taking the Plunge: Nanoscale Chemical Imaging of Functionalized Gold Triangles in H₂O via TERS

Contact Info

Product

Resources

About

Plasmonics, Tracking and Manipulating, and Living Cells: general discussion

Cited by 10 publications

References 6 publications

Optimal run-and-tumble–based transportation of a Janus particle with active steering

Optimal run-and-tumble–based transportation of a Janus particle with active steering

A Sight to Wheat Bran: High Value-Added Products

Taking the Plunge: Nanoscale Chemical Imaging of Functionalized Gold Triangles in H2O via TERS

Contact Info

Product

Resources

About

Taking the Plunge: Nanoscale Chemical Imaging of Functionalized Gold Triangles in H₂O via TERS