Unusual Dynamics Research Articles

New puzzle in charmonium decays * *Supported in part by National Key Research and Development Program of China (2020YFA0406301) and National Natural Science Foundation of China (NSFC) (11961141012, 11835012, 11521505)

By analyzing existing data on pseudoscalar charmonium decays, we obtain the ratio of the branching fractions of and decays into ten different final states with light hadrons. For the first time, we test the two existing theoretical predictions of these decays and find that the experimental data are significantly different from both of them. The lack of observation of any decay mode with higher rate in than in decays suggests very unusual decay dynamics in pseudoscalar charmonium decays to be identified. We also report the first model-independent evaluation of the partial width of ( keV) and improve determination of that of ( keV). The latter shows a tension with the most recent lattice QCD calculation.

Ambiguity in a pandemic recession, asset prices, and lockdown policy.

Using an asset pricing model of a multisector production economy including pandemic disaster, we explain the average stock price boom and significant cross‐sectional variation of stock returns in the United States and Japan during the COVID‐19 pandemic recession. We find that two features of the pandemic, namely ambiguity and sector‐specific shocks, are critical determinants of the unusual asset price dynamics observed. Extending the model, we analyze the welfare effects of lockdown policy during pandemics for heterogeneous households. We theoretically show that enforcing a lockdown improves the welfare of asset holders and households working in sectors with positive sector‐specific shocks. Consequently, a Pareto‐optimal lockdown policy controls for the tightness of lockdown to maximize the welfare of households working in sectors with negative sector‐specific shocks.

New perspectives for active acoustic metamaterials

It is generally accepted that active acoustic metamaterials could, in principle, control impinging sound in ways not possible with passive media. One way to realize this potential is to employ structures composed of sensor-driver unit cells. In this approach, sensors are detecting the impinging wave and actuators are driven coherently with the sensed fields in order to generate almost arbitrary and programmable scattering profiles for the cells. This presentation will briefly review some of the rich and unusual dynamics of metamaterials based on these cells and, most importantly, will highlight the untapped potential of this architecture. In particular, the sensor-driver cells are not limited to generating a response in the same physical field as the excitation. Here, I will focus on metasurfaces that respond with light to acoustic waves. One possible application of these acousto-optical metamaterials will be discussed, namely, the realization of new acoustic imaging devices with potentially much larger resolutions than traditional imaging devices. [Work supported by the National Science Foundation under Grant No. CMMI-1942901.]

Dynamic Friedel oscillations on the surface of a topological insulator

We study theoretically the dynamic Friedel oscillations of electrons at the surface of a topological insulator (TI) that are generated by the rotation of a localized impurity spin. We show that the spin-orbit interaction (SOI) in Rashba form, which is an integral part of the TI Hamiltonian, yields a highly anisotropic response to the localized spin rotation. As a result, the response to a flip of a localized spin $z$ projection involves the reaction of all $x$, $y$, and $z$ components of the local magnetization. Additionally, the dynamic spin moment (and thus also Friedel oscillations) emitted by the localized dynamical spin depends on the orientation in the TI plane. The resulting unusual dynamics is due to the interplay of SOI and Ruderman-Kittel-Kasuya-Yoshida interactions. This provides the basis for manipulation of the spin transport in topological insulators decorated with localized impurity spins, which may be important for technological applications.

Probing the magnetic polaron state in the ferromagnetic semiconductor HgCr2Se4 with muon-spin spectroscopy and resistance-fluctuation measurements

Combined resistance noise and muon-spin relaxation ($\ensuremath{\mu}\mathrm{SR}$) measurements of the ferromagnetic semiconductor ${\mathrm{HgCr}}_{2}{\mathrm{Se}}_{4}$ suggest a degree of magnetoelectric coupling and provide evidence for the existence of isolated magnetic polarons. These form at elevated temperatures and undergo a percolation transition with a drastic enhancement of the low-frequency $1/f$-type charge fluctuations at the insulator-to-metal transition at $\ensuremath{\sim}95--98\phantom{\rule{0.16em}{0ex}}\mathrm{K}$ in the vicinity of the magnetic ordering temperature ${T}_{\mathrm{C}}\ensuremath{\sim}105--107\phantom{\rule{0.16em}{0ex}}\mathrm{K}$. Upon approaching the percolation threshold from above, the strikingly unusual dynamics of a distinct two-level fluctuator superimposed on the $1/f$ noise can be described by a slowing down of the dynamics of a nanoscale magnetic cluster, a magnetic polaron, when taking into account an effective radius of the polaron depending on the spin correlation length. Coinciding temperature scales found in $\ensuremath{\mu}\mathrm{SR}$ and noise measurements suggest changes in the magnetic dynamics over a wide range of frequencies and are consistent with the existence of large polarized and domain-wall-like regions at low temperatures, that result from the freezing of spin dynamics at the magnetic polaron percolation transition.

No-slip billiards with particles of variable mass distribution.

Astute variations in the geometry of mathematical billiard tables have been and continue to be a source of understanding their wide range of dynamical behaviors, from regular to chaotic. Viewing standard specular billiards in the broader setting of no-slip (or rough) collisions, we show that an equally rich spectrum of dynamics can be called forth by varying the mass distribution of the colliding particle. We look at three two-parameter families of billiards varying both the geometry of the table and the particle, including as special cases examples of standard billiards demonstrating dynamics from integrable to chaotic, and show that markedly divergent dynamics may arise by changing only the mass distribution. Furthermore, for certain parameters, billiards emerge, which display unusual dynamics, including examples of full measure periodic billiards, conjectured to be nonexistent for the standard billiards in Euclidean domains.

Unusual wave-packet spreading and entanglement dynamics in non-Hermitian disordered many-body systems

Non-Hermiticity and dephasing, collaborating in an unusual wave packet dynamics, realizes unconventional entanglement evolution in a disordered, interacting and asymmetric (non-reciprocal) quantum medium. Taking the Hatano-Nelson model as a concrete example, we first consider how wave packet spreads in a non-Hermitian disordered system for demonstraing that it is very different from the Hermitian case. Interestingly, a cascade like wave packet spreading as in the Hermitian case is suppressed in the clean limit and at weak disorder, while it revives in the vicinity of the localization-delocalization transition. Based on this observation, we then analyze how the entanglement entropy of the system evolves in the interacting non-Hermitian model, revealing its non-monotonic evolution in time. We clarify the different roles of dephasing in the time evolution of entanglement entropy in Hermitian and non-Hermitian systems, and show that the many-body dynamics is governed by a principle different from the Hermitian case. The size dependence of the results suggests with the increase of disorder, a unusual area-volume-area law crossover of the maximal entanglement entropy. To analyze the effects of disorder on a firm basis, using the Hermitian limit as a benchmark, we employ a quasi-periodic disorder (Aubry-Andr\'{e} model) in the analyses.

Regulation of MLL1 Methyltransferase Activity in Two Distinct Nucleosome Binding Modes.

Cryo-EM structures of the KMT2A/MLL1 core complex bound on nucleosome core particles (NCPs) suggest unusual rotational dynamics of the MLL1 complex approaching its physiological substrate. However, the functional implication of such dynamics remains unclear. Here, we show that the MLL1 core complex also shows high rotational dynamics bound on the NCP carrying the catalytically inert histone H3 lysine 4 to methionine (K4M) mutation. There are two major binding modes of the MLL1 complex on the NCPK4M. Importantly, disruption of only one of the binding modes compromised the overall MLL1 activity in an NCP-specific manner. We propose that the MLL1 core complex probably exists in an equilibrium of poised and active binding modes. The high rotational dynamics of the MLL1 complex on the NCP is a feature that can be exploited for loci-specific regulation of H3K4 methylation in higher eukaryotes.

Characterization of the L-form switch in the Gram-negative pathogen Streptobacillus moniliformis.

ABSTRACTAlmost all major classes of bacteria are surrounded by a peptidoglycan cell wall, which is a crucial target for antibiotics. It is now understood that many bacteria can tolerate loss of the cell wall provided that they are in an isotonic environment. Furthermore, in some cases the cells can continue to proliferate in a state known as the L-form. L-form proliferation occurs by an unusual blebbing or tubulation mechanism that is completely independent of the normally essential division machine or cell wall synthetic enzymes, and is resistant to cell wall-active antibiotics. However, the growth is limited by reactive oxygen species generated by the respiratory chain pathway. In this work, we examined the walled to L-form transition in a pathogenic Gram-negative bacterium, Streptobacillus moniliformis, which naturally lacks the respiratory chain pathway, under aerobic conditions. L-form-like cells often emerged spontaneously, but proliferation was not observed unless the cells were treated with cell wall-active antibiotics. Time-lapse imaging revealed that cell division of S. moniliformis L-forms involves unusual membrane dynamics with an apparent imbalance between outer membrane and cytoplasmic volume growth. The results suggest that outer membrane expansion may be an important general factor for L-form proliferation of diderm bacteria.

Identification of Phytaspase Interactors via the Proximity-Dependent Biotin-Based Identification Approach.

Proteolytic enzymes are instrumental in various aspects of plant development, including senescence. This may be due not only to their digestive activity, which enables protein utilization, but also to fulfilling regulatory functions. Indeed, for the largest family of plant serine proteases, subtilisin-like proteases (subtilases), several members of which have been implicated in leaf and plant senescence, both non-specific proteolysis and regulatory protein processing have been documented. Here, we strived to identify the protein partners of phytaspase, a plant subtilase involved in stress-induced programmed cell death that possesses a characteristic aspartate-specific hydrolytic activity and unusual localization dynamics. A proximity-dependent biotin identification approach in Nicotiana benthamiana leaves producing phytaspase fused to a non-specific biotin ligase TurboID was employed. Although the TurboID moiety appeared to be unstable in the apoplast environment, several intracellular candidate protein interactors of phytaspase were identified. These were mainly, though not exclusively, represented by soluble residents of the endoplasmic reticulum, namely endoplasmin, BiP, and calreticulin-3. For calreticultin-3, whose gene is characterized by an enhanced expression in senescing leaves, direct interaction with phytaspase was confirmed in an in vitro binding assay using purified proteins. In addition, an apparent alteration of post-translational modification of calreticultin-3 in phytaspase-overproducing plant cells was observed.

Franghiz Alizadeh’s Composition ‘Wahe’ (‘Oasis’) for String Quartet and Tape Recorder

The article examines the chamber-instrumental work of Franghiz Alizadeh, a prominent representative of the modern Azerbaijani school of composition, People’s Artist, awarded the honorary title of ‘Artist of Peace’ by UNESCO. The article also highlights the characteristics of the musical and harmonic language, original timbre combinations, unusual dynamics, methods of using modern musical techniques of chamber-instrumental works of Franghiz Alizadeh, which is an area of her creative work that combines East-West music synthesis. The article analyzes Franghiz Alizadeh’s composition ‘Oasis for tape recorder and string quartet and gives specific features of the work. The article emphasizes that Franghiz Alizadeh’s presentation of Oriental thought in a synthesis of modern methods in the composition ‘Oasis’ is a unique feature of the work. The purpose of the research is to analyze the composition of Franghiz Alizadeh’s ‘Oasis’ and to determine the individual stylistic features of the composer. The interpretation of important innovations in Franghiz Alizadeh’s chamber-instrumental work and the discovery of its connection with modern music culture is especially emphasized. The basis of the research is the involvement of Franghiz Alizadeh, a prominent representative of the modern Azerbaijani school of composition, in the research work of the composition ‘Oasis’, which has not been subjected to scientific and theoretical analysis. The research methodology is based on music-analytical, theoretical, and historical analysis. It was noted that Franghiz Alizadeh’s chamber-instrumental work was formed in the context of the development of modern music, and modern technical methods were manifested uniquely. At the same time, the methodological basis of the article is based on the scientific-theoretical principles and research of Azerbaijani and foreign musicologists. The scientific novelty of the research is that for the first time, the general features of Franghiz Alizadeh’s chamber-instrumental creative work were studied within the framework of Azerbaijani music science, and the composer’s composition ‘Oasis’ was analyzed in detail. At the same time, based on the analysis, the article presents a detailed scientific study of the composition ‘Oasis’, which is of great importance in the work of the composer. Conclusions. The comprehensive analysis of Franghiz Alizadeh’s chamber-instrumental work and especially the composition ‘Oasis’ in the presented article allows drawing important conclusions about the features of the composer’s creative style. Franghiz Alizadeh is a modern Azerbaijani composer distinguished by her original creative style, and it was noted that the deep content of her works, distinguished by her unusual style of performance, is important in our national music art. It was noted that the East-West synthesis is dynamically manifested in the composer’s work, and this feature is directly felt like her works. From this point of view, F. Alizadeh’s camera-instrumental work is distinguished by the difference of modern writing techniques with rich images, and she has achieved great success not only in her native Azerbaijan but also far beyond its borders. It should be noted that Franghiz Alizadeh’s works, which combine East-West synthesis, have been performed in many countries and met with success. From this point of view, the composition of ‘Oasis’ differs by its rhythmic structure, artistic content, and texture form. It is especially emphasized that the unusual performance of the composition ‘Oasis’ was used to reveal a certain image. It is noted that the composition has a different musical language, along with deep content and non-traditional features. The combination of serial technique and mugam elements gives the composition ‘Oasis’ originality. It is noteworthy that the tape was used as an integral part of the camera-instrumental work. It was noted that the composition "Oasis", as a work of synthesis of theatre and music, has a theatrical effect. Franghis Alizadeh is currently living the period of wisdom in her work and enriches the professional music of Azerbaijan with her unusual works of modern type, which combine East- West synthesis.

Insights Into the Immune Response of the Black Soldier Fly Larvae to Bacteria.

In insects, a complex and effective immune system that can be rapidly activated by a plethora of stimuli has evolved. Although the main cellular and humoral mechanisms and their activation pathways are highly conserved across insects, the timing and the efficacy of triggered immune responses can differ among different species. In this scenario, an insect deserving particular attention is the black soldier fly (BSF), Hermetia illucens (Diptera: Stratiomyidae). Indeed, BSF larvae can be reared on a wide range of decaying organic substrates and, thanks to their high protein and lipid content, they represent a valuable source of macromolecules useful for different applications (e.g., production of feedstuff, bioplastics, and biodiesel), thus contributing to the development of circular economy supply chains for waste valorization. However, decaying substrates bring the larvae into contact with different potential pathogens that can challenge their health status and growth. Although these life strategies have presumably contributed to shape the evolution of a sophisticated and efficient immune system in this dipteran, knowledge about its functional features is still fragmentary. In the present study, we investigated the processes underpinning the immune response to bacteria in H. illucens larvae and characterized their reaction times. Our data demonstrate that the cellular and humoral responses in this insect show different kinetics: phagocytosis and encapsulation are rapidly triggered after the immune challenge, while the humoral components intervene later. Moreover, although both Gram-positive and Gram-negative bacteria are completely removed from the insect body within a few hours after injection, Gram-positive bacteria persist in the hemolymph longer than do Gram-negative bacteria. Finally, the activity of two key actors of the humoral response, i.e., lysozyme and phenoloxidase, show unusual dynamics as compared to other insects. This study represents the first detailed characterization of the immune response to bacteria of H. illucens larvae, expanding knowledge on the defense mechanisms of this insect among Diptera. This information is a prerequisite to manipulating the larval immune response by nutritional and environmental factors to increase resistance to pathogens and optimize health status during mass rearing.

Theory of Transient Localization, Activated Dynamics, and a Macromolecular Glass Transition in Ring Polymer Liquids.

We construct a segmental scale force level theory for the center-of-mass diffusion constant and corresponding relaxation time for globally compact unconcatenated ring polymer solutions and melts (degree of polymerization N). The approach is based on slowly decaying macromolecular scale intermolecular force dynamic correlations as the origin of their unusual dynamics. Unentangled Rouse, weakly caged, and activated regimes are predicted. The barrier of the activated regime scales linearly with N and as a power law of concentration, which drives a kinetic glass transition on the radius-of-gyration scale. The values of N at the two dynamic crossovers (Rouse to weakly caged, weakly caged to activated) are proportional, with nonuniversality entering mainly via macromolecular volume fraction and dimensionless compressibility. Quantitative comparisons with simulation data reveal good agreement. Aspects of intermediate time dynamics are analyzed, and predictions are made for the conditions required to observe a macromolecular glass transition in the laboratory and on the computer.

Unusual spin dynamics in the low-temperature magnetically ordered state of Ag3LiIr2O6

Recently, there have been contrary claims of Kitaev spin-liquid behaviour and ordered behavior in the honeycomb compound Ag$_3$LiIr$_2$O$_6$ based on various experimental signatures. Our investigations on this system reveal a low-temperature ordered state with persistent dynamics down to the lowest temperatures. Magnetic order is confirmed by clear oscillations in the muon spin relaxation ($\mu$SR) time spectrum below 9 K till 52 mK. Coincidentally in $^7$Li nuclear magnetic resonance, a wipe-out of the signal is observed below $\sim$ 10 K which again strongly indicates magnetic order in the low temperature regime. This is supported by our density functional theory calculations which show an appreciable Heisenberg exchange term in the spin Hamiltonian that favors magnetic ordering. The $^7$Li shift and spin-lattice relaxation rate also show anomalies at $\sim$ 50 K. They are likely related to the onset of dynamic magnetic correlations, but their origin is not completely clear. Detailed analysis of our $\mu$SR data is consistent with a co-existence of incommensurate N\'eel and striped environments. A significant and undiminished dynamical relaxation rate ($\sim 5$ MHz) as seen in $\mu$SR deep into the ordered phase indicates enhanced quantum fluctuations in the ordered state.

Numerical study on surface-heterogeneity-induced anisotropic impact dynamics of droplet

Droplet impact on flat surfaces with heterogeneity is expected to trigger unusual impact dynamics, such as anisotropic spreading and directional rebounding, which in turn could be utilized in the control of droplet motion in many industrial processes. The present work illustrates a numerical study on droplet impact on a flat superhydrophobic substrate coated with a heterogeneous rectangle area, the influence of different positions and wettability of this heterogeneous area on the impact dynamics is investigated. The simulation results show the wettability of the heterogeneous area can impose significant influence on the spreading, retracting, and bouncing processes, especially when the heterogeneous area is located on a site other than the initial contact point, the bouncing of droplet is more likely to happen, and the contact time also becomes shorter. The clear pictures and analysis of the impact dynamics could advance the knowledge of how to control droplet motion by surface coatings.

Формування відпаду дерев у насадженнях парку-пам’ятки садово-паркового мистецтва загальнодержавного значення «Феофанія»

Tree stand mortality in urban ecosystems indicates the influence level of biotic and abiotic factors primarily on their life state. The significance of these processes lies in the knowledge of the forest stands patterns development and their use for forecasting and assessing ecosystem services. The territories of the nature reserve fund have been taken as research sites, as significant indicators of anthropogenically altered territories. The structure of biomass and forest stands species composition was found to be associated with the growth and development of living trees and the formation of dead trees. Biotic and abiotic factors, intraspecific competition and peculiarities of local formation condition and stands growth are determined to affect the life state of the main forest-forming species directly and indirectly. It was revealed that in the medieval oak plantation, the loss of trees during the research period (2016-2020) prevailed over the increase in the stand ground phytomass. It was found that the carbon deposited amount in the forest stands aboveground phytomass reflects the unusual dynamics for the overwhelming number of territory indicators. The litter formation caused the changes in the deposited carbon structure of the research stands phytomass by tree species. It also led to an increase in the deadwood carbon pool and the onset of carbon emissions from the detritus decomposition.

Atypical COVID-19 dynamics in a patient with mantle cell lymphoma exposed to rituximab

Patients with non-hodgkin lymphomas (NHL) represent a population of special interest during the current Coronavirus disease-19 (COVID-19) pandemics. NHLs are associated with disease- and treatment-related immunodeficiencies which may generate unusual COVID-19 dynamics and pose unique management challenges. We report the unusual clinical course of COVID-19 in a patient with mantle cell lymphoma (MCL) exposed to nine doses of Rituximab shortly before infection with severe acute respiratory syndrome corona virus 2 (SARS-CoV-2). He had a prolonged asymptomatic phase, with negative molecular and antibody testing for SARS-CoV-2, followed by a rapidly progressive evolution to severe COVID-19. Despite detection of viral RNA overlapped with first symptoms occurrence, anti-SARS-CoV-2 antibodies displayed an asynchronous pattern, with IgG first appearing 2 days after RNA positivity and IgM never being detected throughout the entire clinical course. While disease-associated immune derangements and/or previous treatments involving anti-CD20 antibodies might have contributed to COVID-19 dynamics in our patient, data suggests that antibody testings, without concurrent molecular assessment for SARS-CoV-2, may turn inadequate for monitoring of MCL patients, and in general NHL patients heavily exposed to anti-CD20 antibodies, during the current pandemics. We suggest that repeated molecular testing of nasopharyngeal swab should be implemented in these subjects despite a negative serology and absence of symptoms of SARS-CoV-2 infection. For the same reasons, a customized strategy needs to be developed for patients exposed to anti-CD20 antibodies, based on different features and mechanism of action of available SARS-CoV-2 vaccines and novel vaccinomics developments.

(Invited) Ultrafast Excited State Dynamics of Twisted Aromatics

Self-assembling of organic chromophoric systems into elegant supramolecular architectures with emergent properties has received prodigious attention in recent years.1 The notion of ‘emergence upon assembly’ is evidenced in the unusual photoexcited state dynamics exhibited by chromophoric assemblies. In the first example, a naphthalene-naphthalimide donor-acceptor (D-A) dyad assembled into segregated D-A stacks in the crystalline state. The photo-induced charge separated state in the aggregate state lasts 10,000 times longer than the monomeric dyad. The femtosecond transient absorption spectra depicted the spectroscopic signature for naphthalene dimer radical cation indicating the migration of charges through the stacks.2 In the second example, we report the crystalline evidence for Greek cross‐dipole (α=90°) stacking of 1,7‐dibromoperylene‐3,4,9,10‐tetracarboxylic tetrabutylester (PTE‐Br2) displaying null excitonic coupling and thereby monomeric optical behavior. Additionally, the semi‐classical Marcus theory of charge‐transfer rates predicted a selective hole transport phenomenon in the orthogonally stacked PTE‐Br2.3 In the third example, we showcase a radial assembly of 1,8-dibromonaphthalene(2,6-diisopropylphenyl)imide (NIBr2) in crystalline phase driven by hexabromine synthon.4 NIBr2 exhibits ultrafast intersystem crossing5 and solid-state room temperature phosphorescence. We believe the fundamental understanding of noncovalent interactions dictating the unorthodox assembly of chromophores6-7 and probing of emergent properties are paramount for the rational design and construction of robust functional materials.8-9

Environmental DNA monitoring of oncogenic viral shedding and genomic profiling of sea turtle fibropapillomatosis reveals unusual viral dynamics

Pathogen-induced cancers account for 15% of human tumors and are a growing concern for endangered wildlife. Fibropapillomatosis is an expanding virally and environmentally co-induced sea turtle tumor epizootic. Chelonid herpesvirus 5 (ChHV5) is implicated as a causative virus, but its transmission method and specific role in oncogenesis and progression is unclear. We applied environmental (e)DNA-based viral monitoring to assess viral shedding as a direct means of transmission, and the relationship between tumor burden, surgical resection and ChHV5 shedding. To elucidate the abundance and transcriptional status of ChHV5 across early, established, regrowth and internal tumors we conducted genomics and transcriptomics. We determined that ChHV5 is shed into the water column, representing a likely transmission route, and revealed novel temporal shedding dynamics and tumor burden correlations. ChHV5 was more abundant in the water column than in marine leeches. We also revealed that ChHV5 is latent in fibropapillomatosis, including early stage, regrowth and internal tumors; higher viral transcription is not indicative of poor patient outcome, and high ChHV5 loads predominantly arise from latent virus. These results expand our knowledge of the cellular and shedding dynamics of ChHV5 and can provide insights into temporal transmission dynamics and viral oncogenesis not readily investigable in tumors of terrestrial species.

Charge Transfer from Photoexcited Semiconducting Single-Walled Carbon Nanotubes to Wide-Bandgap Wrapping Polymer.

As narrow optical bandgap materials, semiconducting single-walled carbon nanotubes (SWCNTs) are rarely regarded as charge donors in photoinduced charge-transfer (PCT) reactions. However, the unique band structure and unusual exciton dynamics of SWCNTs add more possibilities to the classical PCT mechanism. In this work, we demonstrate PCT from photoexcited semiconducting (6,5) SWCNTs to a wide-bandgap wrapping poly-[(9,9-dioctylfluorenyl-2,7-diyl)-alt-(6,6′)-(2,2′-bipyridine)] (PFO–BPy) via femtosecond transient absorption spectroscopy. By monitoring the spectral dynamics of the SWCNT polaron, we show that charge transfer from photoexcited SWCNTs to PFO–BPy can be driven not only by the energetically favorable E33 transition but also by the energetically unfavorable E22 excitation under high pump fluence. This unusual PCT from narrow-bandgap SWCNTs toward a wide-bandgap polymer originates from the up-converted high-energy excitonic state (E33 or higher) that is promoted by the Auger recombination of excitons and charge carriers in SWCNTs. These insights provide new pathways for charge separation in SWCNT-based photodetectors and photovoltaic cells.