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Ferrobotic swarms allow accessible and adaptable automated viral testing


Over the previous twenty years, main epidemics (SARS, Zika, MERS and Ebola) and pandemics (H1N1 and COVID-19) have emerged with more and more alarming regularity1,2,3. Though presently the world is grappling with the COVID-19 pandemic, the incidence of the subsequent wave of infectious illness outbreaks within the coming years is deemed inevitable, given the rise in inhabitants, urbanization and world journey and/or commerce. In that regard, large-scale inhabitants screening is the first safeguard to comprise epidemics, forestall pandemics and mitigate their human and financial prices on their onset4,5,6.

Accordingly, rising our viral diagnostic and surveillance testing capability globally is prime to our epidemic and pandemic preparedness7,8,9. Among the many check choices, nucleic acid amplification assessments (NAATs) are advantageous over the antigen-based and antibody-based counterparts, owing to their superior sensitivity, specificity and skill for fast deployment with out the necessity to generate particular diagnostic antibodies10,11. To carry out NAATs at massive scale and frequency, accessible automated testing platforms are required that may be deployed in decentralized settings to analyse samples with excessive throughput, quick turnaround time and minimal capital price and/or reagent use12,13,14. Particularly, the strategic pooling of samples15,16,17,18, when most sufferers are anticipated to be detrimental, can result in a marked discount in useful resource utilization amid pandemic-induced provide chain disruptions (outweighing the marginal danger of dilution-induced false negatives19,20). Accordingly, versatile testing workflows dictated by adaptive pooling algorithms—similar to viral prevalence-based algorithms—which might be supposed to maximise the screening effectivity are wanted (Fig. 1a,b).

Fig. 1: Overview of the bioanalytical swarm ferrobotic platform for accessible, adaptable and automatic viral testing.
figure 1

a, Spatiotemporal various COVID-19 viral prevalence (primarily based on the check positivity fee information from Our World in Knowledge and California Well being and Human Providers Open Knowledge Portal). Map generated utilizing Visme. b, The required variety of assessments per particular person to seek out all contaminated individuals (throughout completely different ranges of native viral prevalence), primarily based on the sq. matrix pooled testing technique. The green-highlighted curve illustrates that maximal screening effectivity may be achieved by way of adaptive (prevalence-based) testing. c, Optimum testing modes and the related ferrobotic chips (scale bar, 1 cm) for the consultant native viral prevalence ranges of 25%, 10% and a pair of%. d, Overview of the automated workflows for particular person and pooled testing of 16 samples. e, Exploded schematic of a consultant ferrobotic viral testing platform (for instance, 42 pooling). Pink arrows, route of the movement of the ferrobots and droplets. f, The ferrobotic equivalents of laboratory-based NAAT liquid dealing with operations, together with aliquoting, merging and mixing. g, Optical picture of a consultant ferrobotic viral testing platform for 42 pooled testing.

Nonetheless, present automated NAAT-based testing platforms are unable to carry out the built-in liquid dealing with, evaluation and automatic suggestions processes which might be obligatory to realize these versatile workflows21,22,23. As well as, they use cumbersome, costly and reagent-wasteful robotic liquid handlers and bioinstruments, with heavy installations and upkeep wants, and thus, they’re restricted to centralized laboratory settings24,25,26,27,28,29.

To allow adaptive pooled testing, right here we created an automatic NAAT-based testing platform, which performs programmable liquid dealing with and bioanalytical operations inside versatile workflows and in a parallel method. As a substitute of resource-intensive and functionally restricted robotic liquid handlers, we used a swarm of individually addressable millimetre-sized magnets as cellular robotic brokers (‘ferrobots’) that may manipulate magnetic nanoparticle-spiked droplets (‘ferro-droplets’) with excessive precision and robustness. The seamless integration of fluidware, {hardware} and software program allowed for programming and streamlining the droplet-based operations, and delivering versatile automated NAAT-centred workflows inside a compact platform (for instance, right here we applied reverse transcription loop-mediated isothermal amplification (RT-LAMP)). To maximise the screening effectivity, we formulated a prevalence-based adaptive testing algorithm (Fig. 1b and Supplementary Observe 1). This algorithm significantly determines the optimum testing mode and guides the operational workflow in accordance with a sq. matrix pooling scheme (Fig. 1c,d), with out entailing overly burdensome pattern dealing with procedures. Adopting this method over the fastened particular person testing method (universally pursued) permits for substantial financial savings over a large viral prevalence vary.

Determine 1e–g illustrates a consultant ferrobotic testing platform, which consists of two modules (solely constructed by low-cost parts): (1) a disposable oil-filled microfluidic chip with passive and lively actuation interfaces that hosts enter samples and ferrofluid or assay reagents, and (2) a printed circuit board (PCB), that includes 2D arrayed coils (‘navigation flooring’), which may be independently activated to electromagnetically direct particular person ferrobots.

We realized the miniaturized bioanalytical operations and workflows inside the framework of ferrobotics, as a result of it concurrently presents excessive levels of robustness, range, programmability and scalability for low-volume pattern dealing with. Inside this framework, we developed and characterised a set of operations, together with droplet transportation, aliquoting, merging, mixing and heating, that are key to the on-chip implementation of NAAT-based assays (Fig. 2 and Prolonged Knowledge Fig. 1).

Fig. 2: Ferrobotic operations allow NAAT-based testing.
figure 2

a, Characterization of the utmost ferro-droplet transportation velocity inside completely different oil environments. The inset exhibits overlaid sequential photos, visualizing the transportation course of (scale bar, 3 mm). Error bars point out imply ± s.e. (n = 4 unbiased experiments). b, Characterization of the aliquoted droplet measurement for various corrugated opening widths (channel top of roughly 900 μm). The inset exhibits that a number of aliquots of the identical ferro-droplet supply may be produced by extending the corrugated characteristic in an array format (scale bar, 5 mm). Error bars point out imply ± s.e. (n = 12 throughout 3 replicates). c, Characterization of the brink voltage for droplet merging utilizing completely different concentrations of a surfactant (PicoSurf) inside an oil (Novec) setting. The inset exhibits sequential optical photos of the merging course of (scale bar, 5 mm). Error bars point out imply ± s.e. (n = 3 unbiased experiments). d, Characterization of the cyclic ferrobotic operations, involving aliquoting, merging and intermediate transportation of a guardian droplet to judge the robustness of the ferrobotic operations (carried out for greater than 800 cycles; scale bar, 3 mm). Father or mother droplet measurement assorted by lower than 1% for every of the post-merging and post-aliquoting states (characterised optically). e, Progressive mixing index for various actuation frequencies. Corresponding photos of the merged droplets underneath mixing at completely different actuation frequencies for 15 s are additionally proven (prime). f, Characterization of the native temperature set by an on-board resistive heater for various enter present. g, The RT-LAMP response and detection mechanism. h, Consultant gel electrophoresis evaluation of the RT-LAMP response product (repeated 3 times; response interval of 30 min). i,j, Sequential optical photos (i) and on-chip readouts (j) of the RT-LAMP assay carried out in ferro-droplets containing detrimental management and spiked SARS-CoV-2-positive management RNA (25, 100 and 1,000 cp μl−1) samples. Error bars point out imply ± s.e. (n = 10 unbiased optical sensor readouts).

By programming the underlying PCB-based coils, we electromagnetically directed the ferrobots to hold ferro-droplets inside completely different oil environments, by which fast droplet transportation with a most velocity vary of 5–50 mm s−1 was achieved (Fig. 2a and Prolonged Knowledge Fig. 1b). We discovered that Novec (oil)–PicoSurf (surfactant) yielded the utmost ferro-droplet velocity (owing to its low viscosity; Supplementary Observe 2, Supplementary Desk 5 and Supplementary Fig. 6), in addition to being appropriate with the RT-LAMP assay.

Determine 2b illustrates the exact and tuneable ferrobotic pattern aliquoting functionality within the optimized Novec oil setting. In our context, aliquoting is a essential step for exact pattern metering and creating sub-samples for multiplexing and multiround pooling evaluation. Aliquoting is achieved by directing a ferrobot carrying a ferro-droplet alongside a corrugated structural characteristic, which in flip causes the shelling out of a smaller ferro-droplet (as an aliquot). By adjusting the corrugation opening and/or the channel top, the amount of the aliquot could possibly be tuned over two orders of magnitude (for instance, right here 100 nl to 10 μl; Prolonged Knowledge Figs. 1c,d and 2a).

To appreciate droplet merging, we utilized the precept of electrocoalescence. In our context, droplet merging is beneficial for including reagents to the enter samples and mixing a number of enter samples for pooling. As proven in Fig. 2c, by transporting the droplets to an electrode pair and making use of a comparatively low voltage (roughly 0.3–1.5 V, relying on the encircling oil–surfactant composition; Supplementary Observe 3 and Supplementary Fig. 7), droplet merging in lower than a number of seconds may be achieved.

We discovered that sturdy and repeatable ferrobotic droplet actuation may be achieved for droplets spanning completely different ionic strengths and chemical compositions related for organic and chemical assays (Prolonged Knowledge Fig. 3). A complete of greater than 8 million actuation occasions have been carried out over greater than 24 h (solely restricted by the remark time), exhibiting repeatable behaviour over the time interval. This behaviour differs from widespread digital microfluidics approaches similar to electrowetting on dielectric, which bear floor degradation-related points30,31,32. Additional illustrating that different ferrobotic operations are sturdy, we carried out cyclic aliquoting, merging and intermediate transportation of a guardian droplet over 800 cycles with lower than 1% variation within the corresponding measurement of the guardian droplet post-aliquoting and post-merging (Fig. 2nd).

To appreciate mixing, which is especially vital for homogenizing the droplet contents post-merging, the ferrobot may be oscillated to induce chaotic fluid movement inside the merged droplet by alternatively activating the neighbouring coils. As proven in Fig. 2e, the droplet homogenization fee will increase with oscillation frequency and, particularly, a virtually full-mixed state may be reached in roughly 15 s by oscillating the ferrobot at 5 Hz.

We used on-board resistive heaters for nucleic acid amplification and pattern preparation (for instance, lysis). The native temperature may be managed by adjusting the direct present flowing via the resistive heater, in accordance with the operational wants (Fig. 2f and Prolonged Knowledge Fig. 4a–c).

We applied a colorimetric RT-LAMP assay that’s primarily based on thermal lysis or inactivation21 and isothermal amplification (each achievable with on-board resistive heaters). This assay supplies a excessive diploma of check accessibility, outweighing the marginal compromise in check accuracy19,20. Determine 2g illustrates the RT-LAMP reactions, which contain reverse transcription of the viral RNA, amplification of the product DNA and era of hydrogen ions, that are colorimetrically detected. By analysing the response product (DNA) by way of gel electrophoresis (Fig. 2h and Supplementary Fig. 1), we verified the assay perform in changing and amplifying a SARS-CoV-2-positive management RNA pattern. Colorimetric detection is predicated on the generated hydrogen ions, inflicting a color change of an integrated pH indicator (phenol crimson) from red-orange to yellow (optimization experiment outcomes are proven in Prolonged Knowledge Fig. 5a–c). The color change permits for the binary interpretation of the check, above or under a threshold as constructive or detrimental, respectively. This color change may be tracked visually (Fig. 2i) by the bare eye, or electronically by integrating an optical sensor (Fig. 2j and Prolonged Knowledge Fig. 4b,d), with out the absorbance of the ferrofluid affecting the readout interpretations. Accordingly, the identical restrict of detection of 25 cp μl−1 of the adopted assay33 may be achieved within the ferro-droplet format (1 μl; reagent quantity of 19 μl; just like the unique assay protocol), which means that the magnetic nanoparticles don’t intervene with the amplification chemistry or colorimetric readout accuracy (Prolonged Knowledge Fig. 5d). The assay was additionally efficiently carried out through the use of microfluidic constructions of diminished top (roughly 150 μm) to aliquot a tenfold-smaller ferro-droplet quantity (100 nl; reagent quantity of 1.9 μl; Prolonged Knowledge Fig. 5e), which is under the amount that may be precisely pipetted utilizing robotic liquid handlers, however helpful for minimizing reagent use. Our characterization outcomes additionally verified the reliability of the assay within the presence of temperature variations of some levels Celsius (Supplementary Fig. 2a) and within the presence of organic interferents (Supplementary Fig. 3).

The programmability of our program (Supplementary Fig. 4) permits for its ease of adaptation to streamline the ferrobotic actuation and bioanalytical operations, and ship versatile RT-LAMP-based testing workflows in a wholly automated method and with excessive constancy.

Illustrating this level within the context of particular person pattern testing, we custom-made a disposable microfluidic module to host the enter pattern, related reagents and devoted aliquoting or merging parts (Fig. 3a and Prolonged Knowledge Fig. 4b)—then, augmented it with a PCB module, containing the navigation coils, resistive heater components and colorimetric sensing circuitry. By programming the PCB on the software program stage, we put in a ferrobotic instruction set to seamlessly execute the assay. The instruction set charts the navigation plan of a devoted ferrobot and particulars the electrode excitation situations for merging and heating, whereas accounting for a 5-min warmth lysis and a 30-min RT-LAMP response interval (Fig. 3b).

Fig. 3: Efficiency of an automatic ferrobotic SARS-CoV-2 RT-LAMP workflow for particular person medical pattern testing.
figure 3

a, The microfluidic chip for particular person pattern testing (scale bar, 5 mm). b, The timeline of the streamlined on-chip operations for automated particular person testing, which incorporates lively ferrobotic pattern processing operations over a time window of 1.75 min. Warmth lysis and the RT-LAMP response have been carried out at 95 °C and 65 °C, respectively. c, Sequential optical photos of the lively ferrobotic pattern processing operations (carried out mechanically). d, Comparability of the ferrobotic SARS-CoV-2 RT-LAMP assay readouts with the corresponding RT–PCR outcomes (Ct values) for a set of 100 medical samples. Every datapoint represents one pattern. The inset compares ferrobotically produced versus manually carried out RT-LAMP assay outcomes, illustrating that the corresponding pattern check outcomes are in full settlement (whisker limits present extremums, field limits present quartiles and the horizontal line is the median, for a similar assortment of n = 100 samples). e, Corresponding receiver working attribute curve of the analysed samples. The sensitivity and specificity are primarily based on the set cut-off worth of 710 a.u. (additionally serving because the on-chip detection threshold). FN, false detrimental; FP, false constructive; TN, true detrimental; TP, true constructive.

On this testing workflow, the lively ferrobotic operations happen over a interval of 1.75 min (Fig. 3c and Supplementary Video 1). A ferro-droplet is first magnetically transported to, then merged and blended with, an launched pattern droplet to make the pattern amenable for ferrobotic manipulation. The following steps within the sequence are aliquoting the ferro-sample, disposing the ferro-sample residue and delivering the aliquot (1 μl) to the response chamber (containing the assay reagents). Upon supply to the response chamber, the RT-LAMP course of initiates, and after 30 min, the assay readout is colorimetrically quantified, rendering the check end in a sample-to-answer method. An analogous workflow was applied utilizing microfluidic chips with diminished top to realize smaller ferro-droplets (roughly 100 nl) for evaluation with diminished reagents (Prolonged Knowledge Fig. 2b).

We assessed the accuracy of our platform with real-world samples by testing 100 medical samples with the ferrobotic RT-LAMP chip and evaluating the on-chip readouts with the corresponding readouts obtained from the usual PCR with reverse transcription (RT–PCR) and RT-LAMP assays (summarized in Fig. 3d and detailed in Supplementary Desk 6). The collected samples have been primarily based on nasopharyngeal swabs from sufferers contaminated or uninfected with SARS-CoV-2. The viral on-chip detection threshold (710 a.u.) was derived from receiver working attribute evaluation (aliquoted pattern quantity of 1 μl).

For all 100 samples, the ferrobotically produced outcomes have been in settlement with the manually carried out (off-chip) RT-LAMP assay outcomes (100% concordance), illustrating the excessive constancy of the ferrobotic automation. Comparability of the ferrobotically produced RT-LAMP-based outcomes with the corresponding outcomes obtained from the RT–PCR assay (gold normal) resulted in a check sensitivity of 98% and specificity of 100% (Fig. 3e), by which the discrepancy within the uncommon check outcome may be attributed to the inherent variations of the amplification approaches used33. We additional validated that the medical samples with aliquoted volumes of 1 μl and 100 nl may be precisely analysed in a reproducible method throughout replicates (Prolonged Knowledge Fig. 6).

We subsequent demonstrated multiplexed viral testing by using the adaptability of our platform (Prolonged Knowledge Fig. 7, Supplementary Video 2 and Supplementary Observe 4). This testing mode is diagnostically helpful for differentiating between the emergent outbreak virus (for instance, SARS-CoV-2) and endemic viruses (for instance, the seasonal viruses similar to influenza A–H1N1) that usually end in comparable medical signs34,35,36,37.

By using the scalability of the platform, we are able to enhance the testing throughput. The extensibility of the cellular robotic scheme used to a multi-agent cellular (swarm) robotic scheme, along with the expandability of the navigation flooring or microfluidic structure, inherently render our platform scalable. One method to rising the throughput is to easily prolong our particular person testing platform into an array format (Prolonged Knowledge Fig. 4a,e). With this implementation, a lot of enter samples may be analysed in parallel and asynchronously as they arrive—with out involving accumulation wait time (not like the case for present high-throughput strategies that depend on batch processing38). A much less trivial but extra environment friendly high-throughput testing method includes making use of our platform to the issue of adaptive pooled testing.

To find out the suitable variety of enter samples and information the pooled testing workflow, we utilized our prevalence-based adaptive testing algorithm that may be applied following a sq. matrix pooling scheme. Following this method, testing effectivity may be considerably improved in moderate-to-low viral prevalence ranges (particularly, by appropriately performing 32 or 42 matrix pooling, decided algorithmically; Supplementary Observe 1).

Determine 4a supplies an outline of the algorithm-guided sq. matrix pooling scheme, significantly for the case of 42 pooling, which includes a bunch of 16 samples organized in a 4 × 4 matrix (Sij; i,j characterize the row and column indices, respectively). On this scheme, all the samples are first pooled collectively and the resultant pattern combination is analysed by a single assay ‘A’. If the assay readout is detrimental, all the unique enter samples will probably be deemed detrimental. In any other case, a second spherical of testing will probably be adopted. On this spherical, the samples will probably be pooled alongside rows and columns, resulting in a complete of eight pattern aggregates. The row-pooled and column-pooled pattern aggregates will probably be correspondingly analysed by devoted ‘Ri’ and ‘Cj’ assays. The intersectional evaluation of the Ri and Cj assay readouts permits for figuring out the contaminated pattern (or samples) (Fig. 1d and Supplementary Fig. 5). Within the comparatively low possible instances (for instance, 2.5%, assuming a viral prevalence of two%) by which the paired row–column projections aren’t one-to-one mapped to particular preparations of a number of constructive samples, solely these samples which might be deemed suspicious (that’s, these positioned on the intersection of constructive row–column projections) will probably be individually examined.

Fig. 4: Performing a pooled SARS-CoV-2 RT-LAMP workflow utilizing a ferrobot swarm.
figure 4

a, Schematic of the sq. matrix pooling scheme. The circulate chart on the centre supplies an outline of the contaminated pattern identification course of primarily based on the assay pooled (A) or row–column (Ri/Cj) responses. b, Sequential optical photos of an automatic 42 pooling workflow carried out by a workforce of 9 ferrobots. To mix aliquots in every pooling step, they have been ferrobotically collected, merged, blended after which allotted as a 1-μl droplet. The inset photos present the essential middleman ferrobotic operations. c,d, Optical photos and readouts obtained from ferrobotic pooled testing of two teams of 9 medical samples utilizing the three2 pooling chip. The detrimental assay A response indicated that no contaminated pattern was current among the many first group of samples in c. The constructive assay A response together with the constructive assay R2 and C2 responses led to the identification of the contaminated pattern (positioned on the second row–second column) among the many second group of samples (d). e,f, Optical photos and readouts obtained from ferrobotic pooled testing of two teams of 16 medical samples utilizing the 42 pooling chip. The detrimental assay A response indicated that no contaminated pattern was current among the many first group of samples in e. The constructive assay A response together with the constructive assay R3 and C3 responses led to the identification of the contaminated pattern (positioned on the third row–third column) among the many second group of samples (f). In cf, error bars point out completely different trials of optical studying, imply ± s.e. (n = 5). Horizontal dashed line signifies on-chip detection threshold (710 a.u.).

To implement the sq. matrix pooled testing workflow, we expanded the microfluidic chip format for pooled testing. Prolonged Knowledge Determine 8a,b illustrates the corresponding layouts of the three2 and 42 microfluidic chips. The expanded layouts particularly embrace arrays of pattern aliquoting interfaces and response chambers (containing SARS-CoV-2 RT-LAMP assay options), orthogonal corridors for intrachip pattern aliquot transport and prolonged merging interfaces. To direct the swarm ferrobotic operations in accordance with the devised pooling scheme, we utilized a PCB module with elevated navigation coils (that’s, an expanded navigation flooring) and programmed the PCB module to put in an up to date multiferrobot-based and pooling algorithm-driven instruction set.

Determine 4b and Supplementary Video 3 illustrate the sequence of the operations carried out by a swarm of 9 ferrobots to ship a consultant 42 pooled testing workflow. The demonstrated sequence includes: (1) making three aliquots of every enter pattern with assistance from 4 ferrobots; (2) all-sample pooling to facilitate the primary spherical of testing (carried out in two steps; combining the aliquots on the identical row utilizing 4 ferrobots in parallel, adopted by combining the resultant aggregates utilizing a single ferrobot); and (3) row–column pooling to facilitate the second spherical of testing (every carried out by a set of 4 ferrobots). To mix the supposed aliquots in every of the pooling steps, the aliquots have been ferrobotically collected, merged, blended after which allotted as a droplet with a metered quantity (1 μl). The overview of the navigation plan and the detailed timeline of the duty sequence executed by every ferrobot (in coordination with the opposite ferrobots) are proven in Prolonged Knowledge Fig. 8c–f.

Earlier than making use of the scaled platform for pooled testing of medical samples, we evaluated the dilutive impact of pattern pooling on the assay detection functionality (utilizing constructive nasal swab samples). The outcomes indicated the potential of the assay in accurately figuring out constructive samples with a comparatively low viral load, even at dilutions as excessive as 16 occasions (Prolonged Knowledge Fig. 9).

We examined the pooled testing functionality of the scaled platform by analysing a set of fifty medical samples (pre-characterized by way of RT–PCR). These samples have been grouped in two preparations of 9 and 16 samples and examined with the corresponding 32 and 42 chips in a strategy to enable for evaluating the pooling, detection and interpretation capabilities of the platform within the first and second rounds of testing. Particularly, for every group measurement or chip, we examined the situations that concerned the absence or the presence of an contaminated pattern. Determine 4c–f illustrates the corresponding on-chip optical characterization outcomes (with assay reagent volumes of 19 µl to analyse aliquoted samples with volumes of 1 µl). Following the aforementioned testing scheme, by evaluating the corresponding assay responses (all-pooled (A) or row–column-pooled (Ri/Cj)) with respect to their detection threshold, we decided the standing of every pattern. We carried out comparable pooled testing research utilizing smaller aliquoted samples (100 nl, with assay reagent volumes of 1.9 µl), demonstrating the power to scale back reagents additional (Prolonged Knowledge Fig. 10). For all examined situations and throughout all samples, the ferrobotically produced and/or interpreted outcomes have been in keeping with these obtained by RT–PCR.

The demonstrated pooled-testing software, and scale of microfluidic liquid dealing with operations, is unprecedented. Supplementary Desk 1 supplies an in depth account of the variety of droplet actuation and ferrobotic operations that have been reliably carried out to realize pooled testing. This was achieved by harnessing the aggressive benefits of the ferrobotic expertise that overcomes efficiency limits (by way of reliability, scalability, reagent use and portability, amongst others) and price boundaries of other microfluidics approaches (Supplementary Observe 5).

Relying on the situational wants, the ferrobotic testing platform may be tailored—with minimal reconfiguration—to automate different NAAT-based assays (for instance, RT–PCR) in addition to different pooling schemes (for instance, Dorfman39). The ferrobotic testing platform may be constructed with low-cost consumables (Supplementary Desk 2) and instrumentation (Supplementary Desk 3) utilizing broadly accessible supplies and circuit parts and following current scalable manufacturing options—collectively enabling mass manufacturing for fast large-scale deployment. As summarized in Supplementary Desk 4, we estimate that translating this platform for population-level screening can finally result in roughly three orders of magnitude of enhance in marginal acquire in testing capability from the instrumentation funding standpoint, and a 60–300-fold discount in reagent prices at moderate-to-low viral prevalence (roughly 8% to 0.8%) and tenfold discount at excessive viral prevalence. Accordingly, using its excessive stage of accessibility, adaptability and automation, the introduced expertise may be deployed as a democratized, distributed and decentralized resolution to increase our testing capability for pandemic preparedness. Past viral testing, the introduced swarm ferrobotic expertise may be tailored and scaled to effectively streamline and massively parallelize numerous different laboratory-based bioanalytical operations inside a miniaturized footprint (Supplementary Observe 6). Thus, this expertise can function a robust software for a variety of biomedical and biotechnological purposes similar to diagnostics, omics, drug growth and chemical and/or biomaterial synthesis.




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