Akanksha Menon

Akanksha Menon
Georgia Institute of Technology | GT · School of Mechanical Engineering

Ph.D. in Mechanical Engineering

About

38
Publications
7,120
Reads
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679
Citations
Citations since 2016
32 Research Items
672 Citations
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
Additional affiliations
July 2021 - present
Georgia Institute of Technology
Position
  • Professor (Assistant)
August 2018 - July 2021
Lawrence Berkeley National Laboratory
Position
  • PostDoc Position
Description
  • Solar desalination, forward osmosis, water-energy nexus, thermal energy storage
August 2013 - May 2018
Georgia Institute of Technology
Position
  • Research Assistant
Description
  • Thermoelectrics, Conducting Polymers, Seebeck coefficient measurents

Publications

Publications (38)
Preprint
Full-text available
Desalination of nontraditional waters (e.g., agricultural drainage, brackish groundwater, industrial discharges, etc.) using renewable energy sources offers a possible route to transform our incumbent linear consumption model (discharge after use) to a circular one (beneficial reuse). This transition will also shift desalination from large-scale ce...
Article
Full-text available
Textiles offer the ideal platform to develop thermoelectric (TE) clothing for body heat harvesting and personal thermoregulation. Herein, textiles used in everyday clothing are adapted to fabricate a flexible and vertical TE device architecture. Selective laser patterning is used to create cavities for embedding bulk inorganic Bi2Te3 legs into a kn...
Article
Scaling of heat exchanger surfaces is a routinely encountered challenge during desalination of high-salinity brines. This can be addressed by modifying the surface morphology and chemistry to manage salt precipitation by kinetically limiting nucleation as the water is removed. In this work, we modified inherently hydrophobic polymer surfaces with a...
Preprint
Full-text available
Herein we present a concept of a high-temperature, thermal energy storage (HT-TES) system for large-scale long duration energy storage (>10 hours) applications. The system relies on tunable composite ceramic materials with high electrical conductivity and can output the stored energy flexibly in the form of heat at 1100 degrees C or higher, and as...
Article
Thermal energy storage is being actively investigated for grid, industrial, and building applications for realizing an all-renewable energy world. Phase change materials (PCMs), which are commonly used in thermal energy storage applications, are difficult to design because they require excellent energy density and thermal transport, both of which a...
Article
In this work, we demonstrate a 3-dimensional graphene oxide (3D GO) stalk that operates near the capillary wicking limit to achieve an evaporation flux of 34.7 kg m-2 h-1 under 1 sun conditions (1 kW/m2). This flux represents nearly a 100 times enhancement over a conventional solar evaporation pond. Interfacial solar evaporation traditionally uses...
Article
Full-text available
Charge transport in semiconducting polymers ranges from localized (hopping-like) to delocalized (metal-like), yet no quantitative model exists to fully capture this transport spectrum and its dependency on charge carrier density. In this study, using an archetypal polymer–dopant system, we measure the temperature-dependent electrical conductivity,...
Article
Heteroatom substitution can favorably alter electronic transport in conductive polymers to improve their thermoelectric performance. This study reports the spectroscopic, structural, and thermoelectric properties of poly(3–(3′,7′-dimethyloctyl) chalcogenophenes) or P3RX doped with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ), where...
Article
Full-text available
Organic-inorganic hybrids have recently emerged as a class of high-performing thermoelectric materials that are lightweight and mechanically flexible. However, the fundamental electrical and thermal transport in these materials has remained elusive due to the heterogeneity of bulk, polycrystalline, thin films reported thus far. Here, we systematica...
Article
Full-text available
Growing global water demand has brought desalination technologies to the forefront for freshwater production from nontraditional water sources. Among these, forward osmosis (FO) is a promising two-step desalination process (draw dilution and regeneration), but it is often overlooked due to the energy requirements associated with draw regeneration....
Article
Full-text available
Organic–inorganic hybrids offer great promise as solution‐processable thermoelectric materials. However, they have struggled to surpass the performance of their rigid inorganic counterparts due, in part, to a lack of synthetic control and limited understanding of how inorganic nanostructure dimensions impact overall charge transport. While it has b...
Article
Full-text available
Zero-liquid discharge is an emerging wastewater management strategy that maximizes water recovery for reuse and produces a solid waste, thereby lowering the environmental impact of wastewater disposal. Evaporation ponds harvest solar energy as heat for zero-liquid discharge, but require large land areas due to low evaporation rates. Here, we demons...
Article
This artwork illustrates nickel ethenetetrathioloate (NiETT), which is one of the highest performing n‐type thermoelectric materials, as discussed in articles 1800884 and 1900066 by Shannon K. Yee and co‐workers, flying towards the reader and into a futuristic wearable thermoelectric technology. The background is tessellated with pentagons forming...
Preprint
Rising water demands and depleting freshwater resources have brought desalination and wastewater treatment technologies to the forefront. For sustainable water management, there is a global push towards Zero Liquid Discharge (ZLD) with the goal to maximize water recovery for reuse, and to produce solid waste that lowers the environmental impact of...
Article
Thermoelectrics represent a unique opportunity in energy to directly convert thermal energy or secondary waste heat into a primary resource. The development of thermoelectric materials has improved over the decades in leaps, rather than by increments—each leap forward has recapitulated the science of its time: from the crystal growth of semiconduct...
Article
Conjugated polymers with high electrical conductivities are attractive for applications in capacitors, biosensors, organic thermoelectrics, and transparent electrodes. Here, a series of solution processable dioxythiophene copolymers based on 3,4‐propylenedioxythiophene (ProDOT) and 3,4‐ethylenedioxythiophene (EDOT) is investigated as thermoelectric...
Article
Conjugated polymers with high electrical conductivities are attractive for applications in capacitors, biosensors, organic thermoelectrics, and transparent electrodes. Here, a series of solution processable dioxythiophene copolymers based on 3,4‐propylenedioxythiophene (ProDOT) and 3,4‐ethylenedioxythiophene (EDOT) is investigated as thermoelectric...
Article
Integrating thermoelectric generators (TEGs) into textiles is attractive for body heat harvesting to power wearable electronics. Textile‐integrated TEGs have the advantage of conformity to the body that ensures efficient heat transfer and does not impede movement. Additive printing techniques and solution processable polymer‐based thermoelectric (T...
Article
The synthesis of the metal‐coordination polymer poly(nickel tetrathiooxalate) (NiTTO) is presented, which represents an alternative route to n‐type thermoelectric materials similar in nature to nickel ethenetetrathiolate (NiETT) polymers. The TTO monomer is synthesized through an electrochemical reduction of carbon disulfide, followed by coordinati...
Article
Full-text available
For many decades, integration of concentrated solar power (CSP) and desalination relied solely on the use of conventional steam Rankine cycles with thermally based desalination technologies. However, CSP research focus is shifting toward the use of supercritical CO2 Brayton cycles due to the significant improvement in thermal efficiencies. Here, we...
Article
Full-text available
Organic materials can be printed into thermoelectric (TE) devices for low temperature energy harvesting applications. The output voltage of printed devices is often limited by (i) small temperature differences across the active materials attributed to small leg lengths and (ii) the lower Seebeck coefficient of organic materials compared to their in...
Article
Polymer-based thermoelectrics have the potential for waste heat recovery and energy harvesting from temperatures less than 200°C. These devices can be fabricated via printing processes that are low cost from materials that are lightweight and flexible, with applications ranging from self-powered sensors to wearable electronics. In the past decade,...
Article
Metallo-organic complexes with nickel as the metal center have been shown to exhibit high electrical conductivities warranting investigation of their thermoelectric potential. A review of metallo-organic n-type thermoelectrics is presented with a focus on nickel-sulfur coordination compounds. Herein, we also investigate the extent of oxidation on t...
Article
Printed electronics is being explored as a rapid, facile means for manufacturing thermoelectric generators (TEGs) that can recover useful electrical energy from waste heat. This work examines the relevant electrical conductivity, thermal resistance, thermovoltage, and Seebeck coefficient of printed films for use in such printed flexible TEGs. The t...
Article
Full-text available
Electrically conducting polymers are attractive for thermoelectric generators (TEGs) because of their low thermal conductivity and solution processability. In this article, we report on the performance of a radial device made from n- and p-type polymers printed on paper substrates. Our thermoelectric (TE) models predict an optimized geometry for a...
Article
Full-text available
Thermoelectric generators (TEGs) are solid-state heat engines consisting of p-type and n-type semiconductors that convert heat into electricity via the Seebeck effect. Conducting polymers are a viable alternative with intrinsic advantages over their inorganic counterparts, since they are abundant, flexible as thick-films, and have reduced manufactu...
Conference Paper
Full-text available
Thermoelectric generators (TEGs) are solid-state heat engines consisting of p-type and n-type semiconductors that convert heat into electricity via the Seebeck effect. Conducting polymers are a viable alternative with intrinsic advantages over their inorganic counterparts since they are abundant, flexible as thick-films, and have reduced manufactur...
Poster
Polymers possess desirable properties such as low thermal conductivity, low cost, and scalable processability as compared to inorganic materials. These characteristics make polymers attractive for thermoelectric (TE) applications. Current examples of polymer thin-film TE devices are limited to traditional rectangular/parallel plate geometries. The...
Conference Paper
Full-text available
Concentrated solar energy finds applications for power generation and as a source of heat for solar thermochemical processes. However, solar energy reaching the earth's surface is intermittent and fluctuates with weather conditions, position of the sun throughout the day and other seasonal changes. This causes a major drawback in receiver efficienc...
Article
Global effects of greenhouse gas emissions associated with the current extensive use of fossil fuels are increasingly attracting research groups and industry to find a solution. In order to reduce or avoid such emissions, solar thermal cracking of natural gas has been studied by many research groups as a clean and economically viable option for hyd...
Conference Paper
Transient changes in weather conditions cause a major drawback in solar reactor efficiency. Regardless of the target product or the feedstock used, a solar reactor needs constant temperatures to house a solar thermochemical process for efficient decomposition of the reactants. Fluctuation in reactor temperature would not only reduce reactant to pro...

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Projects

Projects (5)
Project
Decarbonize buildings and industrial process heat using thermal energy storage.